Tag Archives: double bearing

China Professional Dac42800037 Double Row Tapered Roller Wheel Bearing for Drive Axle with Hot selling

Product Description

 

Product Parameters

Cross reference:
90080-36087 front axle wheel bearing
90080-36136 wheel bearing front 
90080-36137 front wheel bearing
90080-36149 wheel hub bearing
90363-40066 front wheel hub bearing
90363-40069 wheel bearing assembly
90363-T0018 wheel bearings
40BVV07-10GCS japanese wheel bearing
DAC4074W-3CS80 japan bearing front wheel bearing

Specifications: 40BWD12 front wheel bearing

Inside Diameter

40 mm

Outside Diameter

74 mm

Width, Outer Race

42 mm

Location

Front Axle Transmission

Position

Left/Right

ABS Equipped

No

Generation

1
Type

Angular contact ball ,double row

 

 

Advance auto parts wheel bearing size list

P.N. d D B Mass (kg)
25BWD01 25 52 42 0.36
27BWD01J 27 60 50 0.36
28BWD03A 28 58 42 0.4
28BWD01A 28 61 42 0.53
30BWD08 30 55 26 0.26
30BWD01A 30 63 42 0.55
30BWD04 30 68 45 0.69
32BWD05 32 72 45 0.8
34BWD04B 34 64 37 0.82
34BWD11 34 64 37 0.46
34BWD10B 34 66 37 0.51
34BWD07B 34 68 42 0.64
34BWD09A 34 68 37 0.54
35BWD19E 35 65 37 0.48
35BWD07 35 68 30 0.48
35BWD07A 35 68 30 0.48
35BWD16 35 68 36 0.48
35BWD06A 35 72 31 0.55
36BWD04 36 68 33 0.48
36BWD03 36 72 42 0.68

 

Company Profile

HangZhou Jpg bearing & Equipment co ltd

Excellent Manufacturer of
Thin walled bearings
*The domentic Leading numerical control production equipment ensures the accuracy consisitency and stability of the products .
*Advanced production equipment and high quality tecnician team ensure the quality of bearing products .
*Advanced automation equipment ensure the quality of products while taking into account the production efficiency .
Leading Equipment

JPG Bearingis a comprehensive manufacture and service providers with world’s leading bearing manufacture process and management technique in china. We are selling all kinds of ball and roller bearings products with international standard and technology level of low noise, high load and long life. Welcome to inquiry!
 

Main products

1.Taper roller bearing

2.Deep groove ball bearing

3.cylindrical roller bearing

3.spherical roller bearing

4.linear bearing

5.pillow block bearing

6 OEM all knid of famous brand

7. Non-standard bearing

 

Quality Testing

Rigorous Testing

Perfect precision testing equipment ,fullly meet the requirements of bearing R&D and manufacturing .Strict and rigourour quality inspectors strictly abide by product quality standards and strictly control the whole process of products from test to prodution.

High -ending tessing equipment ,professional operation technicians and rigorous procrssing procedures an the guarantee of quality

with the unremitting purcuit of perfec products ,the company has established the industry’s top testing laboratory ,sound quality control rules,and a well -trained professional testing team.Every process from raw materials of finished products is sticklty tested to ensure high quality products. Delivere to the customer .
 

Packaging & Shipping

Packaging:
1. Neutral Package: Plastic Bag + Carton + Pallet;
2. Commercial Package: Plastic Bag + Box + Carton + Pallet;
3. As the clients’ requirement.

Delivery:
1. Less than 1000 pcs , we will send by express. ( Door to Door, Convenient ),
or by air transport. ( Fastest and safest, but expensive )
2. More than 1000pcs , we will send by sea. ( Cheapest, safe )

FAQ

FAQ
1. Can I get some samples?
A: Yes, sample is available for quality check and market test.

2. Can we do our logo or brand on the package?
A: Yes, we can do OEM.

3. What’s the delivery time?
A: It usually takes about 10-25 working days for production based on specifications for your order and quantity.

4. What’s your payment terms?
A: We usually accept T/T or L/C at sight as the main payment
terms, an d other payment can also be negotiated.

5. What’s your warranty terms?A: We offer different warranty time for different components,
please contact us for details
Payment:

1. Less than 1000 pcs , 100% T/T, Western Union in advance.
2. Between 1000-10000pcs, TT, Western Union, MoneyGram.
3. More than 10000pcs , TT, L/C ,Western Union, MoneyGram.
Dealing Process:

Send us inqry———Quotation———–Confirmation for all information———-Proforma Invoice————-Payment———–Shipping goods and documents.

 

How to Calculate Stiffness, Centering Force, Wear and Fatigue Failure of Spline Couplings

There are various types of spline couplings. These couplings have several important properties. These properties are: Stiffness, Involute splines, Misalignment, Wear and fatigue failure. To understand how these characteristics relate to spline couplings, read this article. It will give you the necessary knowledge to determine which type of coupling best suits your needs. Keeping in mind that spline couplings are usually spherical in shape, they are made of steel.
splineshaft

Involute splines

An effective side interference condition minimizes gear misalignment. When 2 splines are coupled with no spline misalignment, the maximum tensile root stress shifts to the left by 5 mm. A linear lead variation, which results from multiple connections along the length of the spline contact, increases the effective clearance or interference by a given percentage. This type of misalignment is undesirable for coupling high-speed equipment.
Involute splines are often used in gearboxes. These splines transmit high torque, and are better able to distribute load among multiple teeth throughout the coupling circumference. The involute profile and lead errors are related to the spacing between spline teeth and keyways. For coupling applications, industry practices use splines with 25 to 50-percent of spline teeth engaged. This load distribution is more uniform than that of conventional single-key couplings.
To determine the optimal tooth engagement for an involved spline coupling, Xiangzhen Xue and colleagues used a computer model to simulate the stress applied to the splines. The results from this study showed that a “permissible” Ruiz parameter should be used in coupling. By predicting the amount of wear and tear on a crowned spline, the researchers could accurately predict how much damage the components will sustain during the coupling process.
There are several ways to determine the optimal pressure angle for an involute spline. Involute splines are commonly measured using a pressure angle of 30 degrees. Similar to gears, involute splines are typically tested through a measurement over pins. This involves inserting specific-sized wires between gear teeth and measuring the distance between them. This method can tell whether the gear has a proper tooth profile.
The spline system shown in Figure 1 illustrates a vibration model. This simulation allows the user to understand how involute splines are used in coupling. The vibration model shows 4 concentrated mass blocks that represent the prime mover, the internal spline, and the load. It is important to note that the meshing deformation function represents the forces acting on these 3 components.
splineshaft

Stiffness of coupling

The calculation of stiffness of a spline coupling involves the measurement of its tooth engagement. In the following, we analyze the stiffness of a spline coupling with various types of teeth using 2 different methods. Direct inversion and blockwise inversion both reduce CPU time for stiffness calculation. However, they require evaluation submatrices. Here, we discuss the differences between these 2 methods.
The analytical model for spline couplings is derived in the second section. In the third section, the calculation process is explained in detail. We then validate this model against the FE method. Finally, we discuss the influence of stiffness nonlinearity on the rotor dynamics. Finally, we discuss the advantages and disadvantages of each method. We present a simple yet effective method for estimating the lateral stiffness of spline couplings.
The numerical calculation of the spline coupling is based on the semi-analytical spline load distribution model. This method involves refined contact grids and updating the compliance matrix at each iteration. Hence, it consumes significant computational time. Further, it is difficult to apply this method to the dynamic analysis of a rotor. This method has its own limitations and should be used only when the spline coupling is fully investigated.
The meshing force is the force generated by a misaligned spline coupling. It is related to the spline thickness and the transmitting torque of the rotor. The meshing force is also related to the dynamic vibration displacement. The result obtained from the meshing force analysis is given in Figures 7, 8, and 9.
The analysis presented in this paper aims to investigate the stiffness of spline couplings with a misaligned spline. Although the results of previous studies were accurate, some issues remained. For example, the misalignment of the spline may cause contact damages. The aim of this article is to investigate the problems associated with misaligned spline couplings and propose an analytical approach for estimating the contact pressure in a spline connection. We also compare our results to those obtained by pure numerical approaches.

Misalignment

To determine the centering force, the effective pressure angle must be known. Using the effective pressure angle, the centering force is calculated based on the maximum axial and radial loads and updated Dudley misalignment factors. The centering force is the maximum axial force that can be transmitted by friction. Several published misalignment factors are also included in the calculation. A new method is presented in this paper that considers the cam effect in the normal force.
In this new method, the stiffness along the spline joint can be integrated to obtain a global stiffness that is applicable to torsional vibration analysis. The stiffness of bearings can also be calculated at given levels of misalignment, allowing for accurate estimation of bearing dimensions. It is advisable to check the stiffness of bearings at all times to ensure that they are properly sized and aligned.
A misalignment in a spline coupling can result in wear or even failure. This is caused by an incorrectly aligned pitch profile. This problem is often overlooked, as the teeth are in contact throughout the involute profile. This causes the load to not be evenly distributed along the contact line. Consequently, it is important to consider the effect of misalignment on the contact force on the teeth of the spline coupling.
The centre of the male spline in Figure 2 is superposed on the female spline. The alignment meshing distances are also identical. Hence, the meshing force curves will change according to the dynamic vibration displacement. It is necessary to know the parameters of a spline coupling before implementing it. In this paper, the model for misalignment is presented for spline couplings and the related parameters.
Using a self-made spline coupling test rig, the effects of misalignment on a spline coupling are studied. In contrast to the typical spline coupling, misalignment in a spline coupling causes fretting wear at a specific position on the tooth surface. This is a leading cause of failure in these types of couplings.
splineshaft

Wear and fatigue failure

The failure of a spline coupling due to wear and fatigue is determined by the first occurrence of tooth wear and shaft misalignment. Standard design methods do not account for wear damage and assess the fatigue life with big approximations. Experimental investigations have been conducted to assess wear and fatigue damage in spline couplings. The tests were conducted on a dedicated test rig and special device connected to a standard fatigue machine. The working parameters such as torque, misalignment angle, and axial distance have been varied in order to measure fatigue damage. Over dimensioning has also been assessed.
During fatigue and wear, mechanical sliding takes place between the external and internal splines and results in catastrophic failure. The lack of literature on the wear and fatigue of spline couplings in aero-engines may be due to the lack of data on the coupling’s application. Wear and fatigue failure in splines depends on a number of factors, including the material pair, geometry, and lubrication conditions.
The analysis of spline couplings shows that over-dimensioning is common and leads to different damages in the system. Some of the major damages are wear, fretting, corrosion, and teeth fatigue. Noise problems have also been observed in industrial settings. However, it is difficult to evaluate the contact behavior of spline couplings, and numerical simulations are often hampered by the use of specific codes and the boundary element method.
The failure of a spline gear coupling was caused by fatigue, and the fracture initiated at the bottom corner radius of the keyway. The keyway and splines had been overloaded beyond their yield strength, and significant yielding was observed in the spline gear teeth. A fracture ring of non-standard alloy steel exhibited a sharp corner radius, which was a significant stress raiser.
Several components were studied to determine their life span. These components include the spline shaft, the sealing bolt, and the graphite ring. Each of these components has its own set of design parameters. However, there are similarities in the distributions of these components. Wear and fatigue failure of spline couplings can be attributed to a combination of the 3 factors. A failure mode is often defined as a non-linear distribution of stresses and strains.

China Professional Dac42800037 Double Row Tapered Roller Wheel Bearing for Drive Axle with Hot sellingChina Professional Dac42800037 Double Row Tapered Roller Wheel Bearing for Drive Axle with Hot selling

China Professional Front Wheel Double Row Angular Contact Bearing Dac44825037 Rear Axle for Auto Parts/Motorcycle Parts with Great quality

Product Description

Front Wheel Double Row Angular Contact Bearing Dac44825037 Rear Axle for Auto Parts/Motorcycle Parts

    Wheel hub bearings (hub bearing) is mainly used for the rotation of the wheel hub bearing and provide precise guidance, it is under axial load and bear radial load is a very important part.
    This structure makes it in the car factory assembly difficulty, the high cost and poor reliability, and the car maintenance station maintenance, also need to bearing for cleaning, oil, and adjustment. Wheel hub bearing unit is in the standard angular contact ball bearings and tapered roller bearing developed on the basis of, it will be 2 sets of bearing assembly as an organic whole, have good performance, can be omitted the clearance adjustment, lightweight, compact structure, load capacity, for sealed bearing can advance in grease, ellipsis external hub seal and from maintenance, etc, and has been widely used in cars, in the truck also.

Product name Wheel Hub Bearing
Material Bearing Steel
Standard DIN GB ISO JIS
Bearing Package Barreled, bagged, boxed, palletized or as customers’ requirement.
Service OEM service provided
Delivery time 3-10 days depends on quantity needed

 Features and Benefits:
    1. Low friction and running temperatures, low noise, and vibration
    2. High running speeds
    3. High quality and performance capabilities for your application
    4. Accommodate radial loads and axial loads in both directions
    5. Available with a variety of greases for most conditions, including food quality grease, high-temperature grease, and Solid Oil
    6. Increased reliability and provide long bearing and lubricant service life 
Applications:
    Electric motors and generators
    Agriculture
    Material handling
    Industrial transmissions
    Food and beverage
    Industrial pumps
    Industrial fans
    Two and 3 wheelers
    Cars and light trucks

Bearing No. Weight Relative  No.   Automotive type
Kg F-AG KOYO NT N SNR NSK BCA IRB OEM
DAC124AW     28BWD01A   IR-8549 90369-28006 Toyota
DAC28610042 2RS 0.53   DU2806ADDXA              

 

Our Advantages:
1. World-Class Bearing: We provide our customers with all types of indigenous bearing with world-class quality.
2. OEM or Non-Stand Bearings: Any requirement for Nonstandard bearings is Easily Fulfilled by us due to its vast knowledge and links in the industry.
3. Genuine products With Excellent Quality: The company has always proved the 100% quality products it provides with genuine intent.
4. After Sales Service and Technical Assistance: The company provides after-sales service and technical assistance as per the customer’s requirements and needs.
5. Quick Delivery: The company provides just-in-time delivery with its streamlined supply chain. 
SAMPLES
1. Samples quantity: 1-10 PCS are available. 
2. Free samples: It depends on the Model No., material and quantity. Some of the bearings samples need client to pay samples charge and shipping cost. 
3. It’s better to start your order with Trade Assurance to get full protection for your samples order. 

CUSTOMIZED
The customized LOGO or drawing is acceptable for us. 

MOQ
1. MOQ: 10 PCS standard bearings. 
2. MOQ: 1000 PCS customized your brand bearings. 

OEM POLICY
1. We can printing your brand (logo, artwork)on the shield or laser engraving your brand on the shield. 
2. We can custom your packaging according to your design
3. All copyright own by clients and we promised don’t disclose any info.
FAQ
    1.What is the minimum order quantity for this product?
    Can be negotiated, we will try our best to meet customer needs.Our company is mainly based on wholesale sales, most customers’orders are more than 1 ton.
    2.What is your latest delivery time?
    Most orders will be shipped within 3-10 days of payment being received.
    3.Does your company have quality assurance?
    Yes, for 2 years.
    4.What is the competitiveness of your company’s products compared to other companies?
    High precision, high speed, low noise.
    5.What are the advantages of your company’s services compared to other companies?
    Answer questions online 24 hours a day, reply in a timely manner, and provide various documents required by customers for customs clearance or sales. 100% after-sales service.
    6.Which payment method does your company support?
    Do our best to meet customer needs, negotiable.
    7.How to contact us quickly?
    Please send us an inquiry or message and leave your other contact information, such as phone number, account or account, we will contact you as soon as possible and provide the detailed information you need.
 

Please feel free to contact us, if you have any other questions

The 5 components of an axle, their function and installation

If you’re considering replacing an axle in your vehicle, you should first understand what it is. It is the component that transmits electricity from 1 part to another. Unlike a fixed steering wheel, the axles are movable. The following article will discuss the 5 components of the half shaft, their function and installation. Hopefully you were able to identify the correct axle for your vehicle. Here are some common problems you may encounter along the way.
Driveshaft

five components

The 5 components of the shaft are flange, bearing surface, spline teeth, spline pitch and pressure angle. The higher the number of splines, the stronger the shaft. The maximum stress that the shaft can withstand increases with the number of spline teeth and spline pitch. The diameter of the shaft times the cube of the pressure angle and spline pitch determines the maximum stress the shaft can withstand. For extreme load applications, use axles made from SAE 4340 and SAE 1550 materials. In addition to these 2 criteria, spline rolling produces a finer grain structure in the material. Cutting the splines reduces the strength of the shaft by 30% and increases stress.
The asymmetric length of the shaft implies different torsional stiffness. A longer shaft, usually the driver’s side, can handle more twist angles before breaking. When the long axis is intact, the short axis usually fails, but this does not always happen. Some vehicles have short axles that permanently break, causing the same failure rate for both. It would be ideal if both shafts were the same length, they would share the same load.
In addition to the spline pitch, the diameter of the shaft spline is another important factor. The small diameter of a spline is the radius at which it resists twisting. Therefore, the splines must be able to absorb shock loads and shocks while returning to their original shape. To achieve these goals, the spline pitch should be 30 teeth or less, which is standard on Chrysler 8.75-inch and GM 12-bolt axles. However, a Ford 8.8-inch axle may have 28 or 31 tooth splines.
In addition to the CV joints, the axles also include CV joints, which are located on each end of the axle. ACV joints, also known as CV joints, use a special type of bearing called a pinion. This is a nut that meshes with the side gear to ensure proper shaft alignment. If you notice a discrepancy, take your car to a shop and have it repaired immediately.

Function

Axles play several important roles in a vehicle. It transfers power from the transmission to the rear differential gearbox and the wheels. The shaft is usually made of steel with cardan joints at both ends. Shaft Shafts can be stationary or rotating. They are all creatures that can transmit electricity and loads. Here are some of their functions. Read on to learn more about axles. Some of their most important features are listed below.
The rear axle supports the weight of the vehicle and is connected to the front axle through the axle. The rear axle is suspended from the body, frame and axle housing, usually spring loaded, to cushion the vehicle. The driveshaft, also called the propshaft, is located between the rear wheels and the differential. It transfers power from the differential to the drive wheels.
The shaft is made of mild steel or alloy steel. The latter is stronger, more corrosion-resistant and suitable for special environments. Forged for large diameter shafts. The cross section of the shaft is circular. While they don’t transmit torque, they do transmit bending moment. This allows the drive train to rotate. If you’re looking for new axles, it’s worth learning more about how they work.
The shaft consists of 3 distinct parts: the main shaft and the hub. The front axle assembly has a main shaft, while the rear axle is fully floating. Axles are usually made of chrome molybdenum steel. The alloy’s chromium content helps the axle maintain its tensile strength even under extreme conditions. These parts are welded into the axle housing.
Driveshaft

Material

The material used to make the axle depends on the purpose of the vehicle. For example, overload shafts are usually made of SAE 4340 or 1550 steel. These steels are high strength low alloy alloys that are resistant to bending and buckling. Chromium alloys, for example, are made from steel and have chromium and molybdenum added to increase their toughness and durability.
The major diameter of the shaft is measured at the tip of the spline teeth, while the minor diameter is measured at the bottom of the groove between the teeth. These 2 diameters must match, otherwise the half shaft will not work properly. It is important to understand that the brittleness of the material should not exceed what is required to withstand normal torque and twisting, otherwise it will become unstable. The material used to make the axles should be strong enough to carry the weight of a heavy truck, but must also be able to withstand torque while still being malleable.
Typically, the shaft is case hardened using an induction process. Heat is applied to the surface of the steel to form martensite and austenite. The shell-core interface transitions from compression to tension, and the peak stress level depends on the process variables used, including heating time, residence time, and hardenability of the steel. Some common materials used for axles are listed below. If you’re not sure which material is best for your axle, consider the following guide.
The axle is the main component of the axle and transmits the transmission motion to the wheels. In addition, they regulate the drive between the rear hub and the differential sun gear. The axle is supported by axle bearings and guided to the path the wheels need to follow. Therefore, they require proper materials, processing techniques and thorough inspection methods to ensure lasting performance. You can start by selecting the material for the shaft.
Choosing the right alloy for the axle is critical. You will want to find an alloy with a low carbon content so it can harden to the desired level. This is an important consideration because the hardenability of the alloy is important to the durability and fatigue life of the axle. By choosing the right alloy, you will be able to minimize these problems and improve the performance of your axle. If you have no other choice, you can always choose an alloy with a higher carbon content, but it will cost you more money.
Driveshaft

Install

The process of installing a new shaft is simple. Just loosen the axle nut and remove the set bolt. You may need to tap a few times to get a good seal. After installation, check the shaft at the points marked “A” and “D” to make sure it is in the correct position. Then, press the “F” points on the shaft flange until the points are within 0.002″ of the runout.
Before attempting to install the shaft, check the bearings to make sure they are aligned. Some bearings may have backlash. To determine the amount of differential clearance, use a screwdriver or clamp lever to check. Unless it’s caused by a loose differential case hub, there shouldn’t be any play in the axle bearings. You may need to replace the differential case if the axles are not mounted tightly. Thread adjusters are an option for adjusting drive gear runout. Make sure the dial indicator is mounted on the lead stud and loaded so that the plunger is at right angles to the drive gear.
To install the axle, lift the vehicle with a jack or crane. The safety bracket should be installed under the frame rails. If the vehicle is on a jack, the rear axle should be in the rebound position to ensure working clearance. Label the drive shaft assemblies and reinstall them in their original positions. Once everything is back in place, use a 2-jaw puller to pry the yoke and flange off the shaft.
If you’ve never installed a half shaft before, be sure to read these simple steps to get it right. First, check the bearing surfaces to make sure they are clean and undamaged. Replace them if they look battered or dented. Next, remove the seal attached to the bushing hole. Make sure the shaft is installed correctly and the bearing surfaces are level. After completing the installation process, you may need to replace the bearing seals.

China Professional Front Wheel Double Row Angular Contact Bearing Dac44825037 Rear Axle for Auto Parts/Motorcycle Parts with Great qualityChina Professional Front Wheel Double Row Angular Contact Bearing Dac44825037 Rear Axle for Auto Parts/Motorcycle Parts with Great quality

China best Double Row Spherical Roller Bearing 239/850/W33 239/850K/W33 for Auto Parts/ Railway Vehicle Axles/Industry Machinery, OEM Service, Roller Bearing with Good quality

Product Description

Specifications of Bearing

We have all kinds of bearings, just tell me your item number and quantity,best price will be offered to you soon
The material of the bearings, precision rating, seals type,OEM service,etc, all of them we can make according to your requirements.

Product Description of CZPT wheel hub bearing

Product Description:   

Application 

Widely used in Paper machines, conveyor equipment, rotary kilns, drums, tube mills, converters, large electrical machines,
 rail vehicles,the mining, metallurgical, chemical industry, agriculture, transportation and other machinery.
Production process 
1. CZPT machining of steel pipe;

2. The inner & outer ring grinding;

3. The precision work of inner ring & outer ring;

4. Bearing cleaning;

5. The Assembly of inner ring , outer ring , bearing balls & cage, etc;

6. Bearing inspection( precison, noise & vibration levels);

Specifications of CZPT wheel hub bearing 25BWD01

  Product name NSK bearing 25BWD01
Dimension 25*52*42mm
Brand name NSK
Material chrome steel
Weight 0.36 Kg
Hardness 58~62
Quality standard SGS  ISO9001

 

Showing of Bearing

 

Parameters of Bearing

More details of CZPT wheel hub bearing

Boundary dimensions (mm) Model Basic load ratings (N) Mass (kg)
d D B C r Cor
25 52 42 25BWD01 28 500 21 400 0.36
27 60 50 27BWD01J 42 500 32 500 0.36
28 58 42 28BWD03A 33 500 25 700 0.4
61 42 28BWD01A 38 500 29 800 0.53
30 55 26 30BWD08 15 600 14 700 0.26
63 42 30BWD01A 40 500 33 000 0.55
68 45 30BWD04 52 500 40 000 0.69
32 72 45 32BWD05 58 500 45 000 0.8
34 64 37 34BWD04B 36 500 31 000 0.82
64 37 34BWD11 36 500 31 000 0.46
66 37 34BWD10B 40 500 33 500 0.51
68 42 34BWD09A 44 000 35 000 0.64
68 37 34BWD09A 44 000 35 000 0.54
35 65 37 35BWD19E 36 500 31 000 0.48
68 30 35BWD07 42 500 36 500 0.48
68 30 35BWD07A 40 500 34 500 0.48
68 36 35BWD16 42 500 36 500 0.48
72 31 35BWD06A 50 000 40 000 0.55
36 68 33 36BWD04 42 500 36 500 0.48
72 42 36BWD03 50 000 40 000 0.68
72.041 34 36BWD01B 50 000 40 000 0.57
37 74 45 37BWD01 52 500 44 000 0.79
38 70 37 38BWD19 44 500 39 500 0.48
70 38 38BWD21 44 500 39 500 0.57
71 30 38BWD09A 45 500 39 000 0.5
71 39 38BWD22 42 000 37 500 0.62
72 33 38BWD12 48 500 42 000 0.56
72.041 34 38BWD04 47 500 41 000 0.55
74 33 38BWD01A 52 500 44 000 0.6
74 50 38BWD06D 52 500 44 000 0.82
74 40 38BWD10B 52 500 44 000 0.69
74 33 38BWD15A 52 500 44 000 0.61
74 33 38BWD24 48 000 43 000 0.62
76 43 38BWD23A 48 000 43 500 0.82
80 33 38BWD18 47 500 46 000 0.79
39 68 37 39BWD03 38 000 34 000 0.5
72 37 39BWD01L 47 500 41 000 0.6
74 39 39BWD05 48 500 42 500 0.66
40 74 40 40BWD06D 54 000 47 000 0.66
74 42 40BWD12 48 000 43 000 0.71
74 36 40BWD15A 48 000 43 000 0.62
74 34 40BWD16 50 500 45 500 0.59
76 38 40BWD05 52 500 44 500 0.7
76 33 40BWD08A 51 500 48 000 0.61
80 34 40BWD07A 65 500 56 000 0.73
80 34 40BWD14 47 500 46 000 0.77
42 76 33 42BWD12 46 000 43 000 0.65
76 35 42BWD06 50 500 46 000 0.64
78 38 42BWD09 55 000 48 500 0.72
80 45 42BWD11 59 000 50 500 0.9
80 34 42BWD13 47 500 46 000 0.76
43 76 43 43BWD12A 48 000 43 500 0.71
79 38 43BWD08 55 000 48 500 0.77
79 45 43BWD13A 49 500 47 000 0.87
80 45 43BWD03 55 000 48 500 0.91
82 45 43BWD06B 62 000 54 500 0.94
45 83 45 45BWD06 57 500 52 500 0.95
84 39 45BWD03 58 500 52 500 0.88
84 40 45BWD07B 69 000 61 000 0.89
84 40 45BWD09 64 500 57 500 0.9
84 45 45BWD10 58 500 52 500 0.98
46 79 45 46BWD01A 49 500 47 000 0.79
48 89 42 48BWD01 69 000 62 000 0.9
49 84 50 49BWD02 46 000 47 000 1
88 46 49BWD01B 64 500 60 000 1.05
27 52 43 27KWD02 53 000 73 500 0.41
30 58 42 30KWD01A 62 000 89 000 0.5
34 67.8 43 34KWD03D 89 500 120 000 0.73
35 60 32.4 35KWD02 60 000 93 500 0.38
37 74 45 37KWD01 89 000 123 000 0.84
38 64 37 38KWD01A 60 500 88 000 0.46
68 37 38KWD02 63 000 92 500 0.56
76 43 38KWD04A 92 500 138 000 0.94
38.993 72.011 37 39KWD02 68 500 92 500 0.63
42 72 38 42KWD02A 76 500 108 000 0.58
72 38 42KWD02D 76 500 108 000 0.58
80 38 42KWD08 95 000 128 000 0.82
43 76 43 43KWD02 94 000 138 000 0.82
77 42 43KWD04 79 500 111 000 0.81
45 77 50 45KWD04 96 000 142 000 0.89
78 40 45KWD03 91 000 130 000 0.73
80 50 45KWD05 99 500 153 000 1.02
46 77 45 46KWD04 82 500 138 000 0.84
78 49 46KWD03 82 500 138 000 0.97
47 82 57.5 EP47KWD01 95 000 138 000 1.1
27 60 15 27BWK02A 38 500 29 600 1.33
63.2 15.5 27BWK03J 41 500 30 500 1.9
64.7 15 27BWK04D2a 38 500 29 600 1.45
65.4 15.5 27BWK06 38 500 29 600 1.9
28 63 14 28BWK08J 41 500 30 500 1.75
64 14 28BWK06D 38 500 29 600 1.74
64 6 28BWK15J 38 500 29 600 1.38
69 10.35 28BWK16 44 000 34 500 1.8
30 66.1 15.5 30BWK13A 44 000 34 500 1.93
67 11.5 30BWK02J 41 500 31 000 1.8
67 14 30BWK11 44 000 34 500 1.91
73.8 15.5 30BWK18 55 000 40 000 1.98
33 73 14.5 33BWK02S 50 000 39 500 2.17
41 86.5 17.5 41BWK03 52 000 46 500 2.69
28 51.8 21 28BWK12 35 000 29 300 1.03
51.8 21 EP30BWK16 47 000 35 500 1.06
30 51.8 21 30BWK03B 47 000 35 500 1.05
51.8 21 30BWK17 38 500 31 500 1.15
51.8 21 30BWK10 40 500 33 000 1.01
46.3 21 EP30BWK14 47 000 35 500 1.35
38 87.4 54.8 38BWK01J 59 000 49 500 1.25
43 83 42.5 43BWK03D 55 000 48 500 1.22
83 47.5 43BWK04 55 000 48 500 1.32
84 56 43BWK07 52 500 50 000 1.67
50 86 55 NTF50KWH01B 98 000 157 000 1.488
51 87 55 51KWH01A 101 000 164 000 1.533

Packing&Delivery

Packing

A. plastic box+outer carton+pallets
B. plastic bag+box+carton+pallet
C. tube package+middle box+carton+pallet
D. Of course we will also be based on your needs

Delivery

1.Most orders will be shipped within 3-5 days of payment being received.
2.Samples will be shipped by courier as FedEx,UPS,DHL,etc.
3.More than 3000 set bearings, it is recommended to be shipped by sea (sea transportation).

Our Main Products

Our Company

HangZhou CZPT bearing co., LTD

 is a professional manufacturer of bearings, collecting together production and processing, domestic and foreign trade. The factory specializes in the production and export of many kinds of bearings: deep groove ball bearing, spherical roller bearing, tapered roller bearing, and so on. The customized bearings is also acceptable and the production will be according to your requirements and samples.

All bearings in our factory adopt international quality standards. The complete equipment, strict quality control, advanced Japanese technology and quality service provide a guarantee to supply the high-quality bearings for our customers. Domestic sales and service network has covered 15 major cities in China, meanwhile our bearing has sold more than 60 overseas countries and regions.

Our bearings have been widely used in agriculture, textiles, mining, printing and packaging industries, in addition to applications in airports, air conditioning systems, conveyors and ship also applied.

If you are interested in any of our bearings or have an intention to order, please feel free to contact us.

FAQ

SAMPLES
1.Samples quantity: 1-10 pcs are available.
2.Free samples: It depends on the model NO., material and quantity. Some of the bearings samples need client to pay   samples charge and shipping cost.
3.It’s better to start your order with Trade Assurance to get full protection for your samples order.

CUSTOMIZED
The customized LOGO or drawing is acceptable for us.

MOQ
1.MOQ: 10 pcs mix different standard bearings.
2.MOQ:  5000 pcs customized your brand bearings.

OEM POLICY
1.We can printing your brand (logo,artwork)on the shield or laser engraving your brand on the shield.
2.We can custom your packaging according to your design
3.All copyright own by clients and we promised don’t disclose any info.

SUPORT
Please visit our Clunt bearings website, we strongly encourge that you can communicate with us through email,thanks!

Contact Us

MR YANG

 

We have all kinds of bearings, just tell me your item number and quantity,best price will be offered to you soon
The material of the bearings, precision rating, seals type,OEM service,etc, all of them we can make according to your requirements.

How to Replace the Drive Shaft

Several different functions in a vehicle are critical to its functioning, but the driveshaft is probably the part that needs to be understood the most. A damaged or damaged driveshaft can damage many other auto parts. This article will explain how this component works and some of the signs that it may need repair. This article is for the average person who wants to fix their car on their own but may not be familiar with mechanical repairs or even driveshaft mechanics. You can click the link below for more information.
air-compressor

Repair damaged driveshafts

If you own a car, you should know that the driveshaft is an integral part of the vehicle’s driveline. They ensure efficient transmission of power from the engine to the wheels and drive. However, if your driveshaft is damaged or cracked, your vehicle will not function properly. To keep your car safe and running at peak efficiency, you should have it repaired as soon as possible. Here are some simple steps to replace the drive shaft.
First, diagnose the cause of the drive shaft damage. If your car is making unusual noises, the driveshaft may be damaged. This is because worn bushings and bearings support the drive shaft. Therefore, the rotation of the drive shaft is affected. The noise will be squeaks, dings or rattles. Once the problem has been diagnosed, it is time to repair the damaged drive shaft.
Professionals can repair your driveshaft at relatively low cost. Costs vary depending on the type of drive shaft and its condition. Axle repairs can range from $300 to $1,000. Labor is usually only around $200. A simple repair can cost between $150 and $1700. You’ll save hundreds of dollars if you’re able to fix the problem yourself. You may need to spend a few more hours educating yourself about the problem before handing it over to a professional for proper diagnosis and repair.
The cost of repairing a damaged driveshaft varies by model and manufacturer. It can cost as much as $2,000 depending on parts and labor. While labor costs can vary, parts and labor are typically around $70. On average, a damaged driveshaft repair costs between $400 and $600. However, these parts can be more expensive than that. If you don’t want to spend money on unnecessarily expensive repairs, you may need to pay a little more.
air-compressor

Learn how drive shafts work

While a car engine may be 1 of the most complex components in your vehicle, the driveshaft has an equally important job. The driveshaft transmits the power of the engine to the wheels, turning the wheels and making the vehicle move. Driveshaft torque refers to the force associated with rotational motion. Drive shafts must be able to withstand extreme conditions or they may break. Driveshafts are not designed to bend, so understanding how they work is critical to the proper functioning of the vehicle.
The drive shaft includes many components. The CV connector is 1 of them. This is the last stop before the wheels spin. CV joints are also known as “doughnut” joints. The CV joint helps balance the load on the driveshaft, the final stop between the engine and the final drive assembly. Finally, the axle is a single rotating shaft that transmits power from the final drive assembly to the wheels.
Different types of drive shafts have different numbers of joints. They transmit torque from the engine to the wheels and must accommodate differences in length and angle. The drive shaft of a front-wheel drive vehicle usually includes a connecting shaft, an inner constant velocity joint and an outer fixed joint. They also have anti-lock system rings and torsional dampers to help them run smoothly. This guide will help you understand the basics of driveshafts and keep your car in good shape.
The CV joint is the heart of the driveshaft, it enables the wheels of the car to move at a constant speed. The connector also helps transmit power efficiently. You can learn more about CV joint driveshafts by looking at the top 3 driveshaft questions
The U-joint on the intermediate shaft may be worn or damaged. Small deviations in these joints can cause slight vibrations and wobble. Over time, these vibrations can wear out drivetrain components, including U-joints and differential seals. Additional wear on the center support bearing is also expected. If your driveshaft is leaking oil, the next step is to check your transmission.
The drive shaft is an important part of the car. They transmit power from the engine to the transmission. They also connect the axles and CV joints. When these components are in good condition, they transmit power to the wheels. If you find them loose or stuck, it can cause the vehicle to bounce. To ensure proper torque transfer, your car needs to stay on the road. While rough roads are normal, bumps and bumps are common.
air-compressor

Common signs of damaged driveshafts

If your vehicle vibrates heavily underneath, you may be dealing with a faulty propshaft. This issue limits your overall control of the vehicle and cannot be ignored. If you hear this noise frequently, the problem may be the cause and should be diagnosed as soon as possible. Here are some common symptoms of a damaged driveshaft. If you experience this noise while driving, you should have your vehicle inspected by a mechanic.
A clanging sound can also be 1 of the signs of a damaged driveshaft. A ding may be a sign of a faulty U-joint or center bearing. This can also be a symptom of worn center bearings. To keep your vehicle safe and functioning properly, it is best to have your driveshaft inspected by a certified mechanic. This can prevent serious damage to your car.
A worn drive shaft can cause difficulty turning, which can be a major safety issue. Fortunately, there are many ways to tell if your driveshaft needs service. The first thing you can do is check the u-joint itself. If it moves too much or too little in any direction, it probably means your driveshaft is faulty. Also, rust on the bearing cap seals may indicate a faulty drive shaft.
The next time your car rattles, it might be time for a mechanic to check it out. Whether your vehicle has a manual or automatic transmission, the driveshaft plays an important role in your vehicle’s performance. When 1 or both driveshafts fail, it can make the vehicle unsafe or impossible to drive. Therefore, you should have your car inspected by a mechanic as soon as possible to prevent further problems.
Your vehicle should also be regularly lubricated with grease and chain to prevent corrosion. This will prevent grease from escaping and causing dirt and grease to build up. Another common sign is a dirty driveshaft. Make sure your phone is free of debris and in good condition. Finally, make sure the driveshaft chain and cover are in place. In most cases, if you notice any of these common symptoms, your vehicle’s driveshaft should be replaced.
Other signs of a damaged driveshaft include uneven wheel rotation, difficulty turning the car, and increased drag when trying to turn. A worn U-joint also inhibits the ability of the steering wheel to turn, making it more difficult to turn. Another sign of a faulty driveshaft is the shuddering noise the car makes when accelerating. Vehicles with damaged driveshafts should be inspected as soon as possible to avoid costly repairs.

China best Double Row Spherical Roller Bearing 239/850/W33 239/850K/W33 for Auto Parts/ Railway Vehicle Axles/Industry Machinery, OEM Service, Roller Bearing with Good qualityChina best Double Row Spherical Roller Bearing 239/850/W33 239/850K/W33 for Auto Parts/ Railway Vehicle Axles/Industry Machinery, OEM Service, Roller Bearing with Good quality

China wholesaler 61902 Metric/Inch Deep Groove Ball Roller Bearing Black Corner Good Price Large Stock Single Double Row Manufacture with Hot selling

Product Description

Single-row Angular contact ball bearings can sustain radial, axial or combined loads with the axial load being from 1 direction. The larger contact angle type has better axial load capacity while the smaller contact angle type has higher speed ratings. Available in bore dimension from 10 mm to 170 mm.

Common Options:
B — 40 degree contact angle
TVP– Polyamide Cage
MP– Machined Brass Cage
G– Flush Ground
 

 

 

 

 

 

ZheJiang CZPT Bearing Co.,ltd is a professional manufacturer of bearings, all kinds of rollers, with more than 15 years experience. Our factory is in ZheJiang and our export office is in ZheJiang . We have established long-term cooperative relations with customers in Canada, Mexico, the United States and other countries and regions. So we also hope to cooperate with you! We believe that our stable quality and competitive price will help you get more market and better development!

After years of development, our company has formed a set of effective and cooperative management models and our business philosophy. “Consider More From the Customer’s Aspect” is our service principle. As a qualified domestic & international trading company, our products are comprehensive and abundant. They are widely used in metallurgy, mining, petroleum, machinery, electric power, paper, grass and other fields. We sincerely hope that there will be more customers from different places to cooperate with our company, and we will provide top service.

We are very confident in our products, and we are sure that we can earn your trust!

 

6000 series deep groove ball bearings 
Bearing No. Boundary Dimensions(mm) Basic Load Rating(N) Weight(KG)
d D B Cr Cor
604 4 12 4 960 350 0.571
605 5 14 5 1070 420 0.0037
606 6 17 6 1960 730 0.0069
607 7 19 6 2800 1060 0.0082
608 8 22 7 3290 1360 0.0129
609 9 24 7 3330 1410 0.016
6000 10 26 8 4160 1780 0.019
6001 12 28 8 5110 2380 0.571
6002 15 32 9 5590 2840 0.03
6003 17 35 10 6000 3250 0.039
6004 20 42 12 9390 5571 0.069
6005 25 47 12 10060 5860 0.08
6006 30 55 13 11900 7460 0.12
6007 35 62 14 16210 10420 0.16
6008 40 68 15 17030 11700 0.19
6009 45 75 16 21080 14780 0.25
6571 50 80 16 22000 16260 0.26
6011 55 90 18 31500 18400 0.39
6012 60 95 18 30000 23000 0.42
6013 65 100 18 32000 25000 0.44
6014 70 110 20 38000 31000 0.6
6015 75 115 20 38000 31000 0.64
6016 80 125 22 47500 40000 0.85
6017 85 130 22 47500 40000 0.89
6018 90 140 24 63800 59000 1.15
6019 95 145 24 66700 62300 1.2
6571 100 150 24 72500 70000 1.25
6200 Series Miniature Deep Groove Ball Bearing    
Bearing No. Boundary Dimensions(mm) Basic Load Rating(N) Weight(KG)
d D B Cr Cor
624 4 13 5 1150 400 0.0032
625 5 16 5 1880 680 0.0051
626 6 19 6 2800 1060 0.
627 7 22 7 3290 1360 0.0131
628 8 24 8 3330 1410 0.017
629 9 26 8 4160 1780 0.0191
6200 10 30 9 5110 2380 0.032
6201 12 32 10 6180 3060 0.037
6202 15 35 11 7450 3700 0.045
6203 17 40 12 9560 4780 0.065
6204 20 47 14 12840 6650 0.11
6205 25 52 15 14571 7930 0.13
6206 30 62 16 19460 11310 0.2
6207 35 72 17 25670 15300 0.29
6208 40 80 18 29520 181400 0.37
6209 45 85 19 32500 20400 0.41
6210 50 90 20 35000 32300 0.46
6211 55 100 21 43500 29200 0.61
6212 60 110 22 52500 36000 0.78
6213 65 120 23 57200 45710 0.99
6214 70 125 24 62000 44000 1.05
6215 75 130 25 66000 49500 1.2
6216 80 140 26 72500 53000 1.4
6217 85 150 28 83500 64000 1.8
6218 90 160 30 96000 71500 2.15
6219 95 170 32 109000 82000 2.6
6220 100 180 34 122000 93000 3.15

 

 

 

Q:What the MOQ of your company?
A: In stock, MOQ is 1pc. 

Q:Could you accept OEM and customize?
A:YES, we can customize for you according to sample or drawing.

Q:Could you supply sample for free?
A:Yes, we can supply sample for free, you only need to pay for the shipping cost.

Q:Is you company factory or Trade Company?
A:We have our own factory ; our type is factory + trade.

Q:Could you tell me the material of your bearing?
A:We have chrome steel, and stainless steel, ceramic and carbon steel. 

Q:Could you offer door to door service?
A:Yes, by express (DHL, FEDEX, TNT, EMS, 4-10 days to your city.)

Q:What is your company payment terms?
A:T/T. Western Union, PayPal
   Small order TT, 100% full payment before shipping.
   If big order we can do 50% down payment or 30% down payment 70% Balance payment on copy of B/L, depends on the order.

Q:Could you tell me the delivery time of your goods?
A:If stock, in 7days or base on your order quantity.

What Are Screw Shaft Threads?

A screw shaft is a threaded part used to fasten other components. The threads on a screw shaft are often described by their Coefficient of Friction, which describes how much friction is present between the mating surfaces. This article discusses these characteristics as well as the Material and Helix angle. You’ll have a better understanding of your screw shaft’s threads after reading this article. Here are some examples. Once you understand these details, you’ll be able to select the best screw nut for your needs.
screwshaft

Coefficient of friction between the mating surfaces of a nut and a screw shaft

There are 2 types of friction coefficients. Dynamic friction and static friction. The latter refers to the amount of friction a nut has to resist an opposing motion. In addition to the material strength, a higher coefficient of friction can cause stick-slip. This can lead to intermittent running behavior and loud squeaking. Stick-slip may lead to a malfunctioning plain bearing. Rough shafts can be used to improve this condition.
The 2 types of friction coefficients are related to the applied force. When applying force, the applied force must equal the nut’s pitch diameter. When the screw shaft is tightened, the force may be removed. In the case of a loosening clamp, the applied force is smaller than the bolt’s pitch diameter. Therefore, the higher the property class of the bolt, the lower the coefficient of friction.
In most cases, the screwface coefficient of friction is lower than the nut face. This is because of zinc plating on the joint surface. Moreover, power screws are commonly used in the aerospace industry. Whether or not they are power screws, they are typically made of carbon steel, alloy steel, or stainless steel. They are often used in conjunction with bronze or plastic nuts, which are preferred in higher-duty applications. These screws often require no holding brakes and are extremely easy to use in many applications.
The coefficient of friction between the mating surfaces of t-screws is highly dependent on the material of the screw and the nut. For example, screws with internal lubricated plastic nuts use bearing-grade bronze nuts. These nuts are usually used on carbon steel screws, but can be used with stainless steel screws. In addition to this, they are easy to clean.

Helix angle

In most applications, the helix angle of a screw shaft is an important factor for torque calculation. There are 2 types of helix angle: right and left hand. The right hand screw is usually smaller than the left hand one. The left hand screw is larger than the right hand screw. However, there are some exceptions to the rule. A left hand screw may have a greater helix angle than a right hand screw.
A screw’s helix angle is the angle formed by the helix and the axial line. Although the helix angle is not usually changed, it can have a significant effect on the processing of the screw and the amount of material conveyed. These changes are more common in 2 stage and special mixing screws, and metering screws. These measurements are crucial for determining the helix angle. In most cases, the lead angle is the correct angle when the screw shaft has the right helix angle.
High helix screws have large leads, sometimes up to 6 times the screw diameter. These screws reduce the screw diameter, mass, and inertia, allowing for higher speed and precision. High helix screws are also low-rotation, so they minimize vibrations and audible noises. But the right helix angle is important in any application. You must carefully choose the right type of screw for the job at hand.
If you choose a screw gear that has a helix angle other than parallel, you should select a thrust bearing with a correspondingly large center distance. In the case of a screw gear, a 45-degree helix angle is most common. A helix angle greater than zero degrees is also acceptable. Mixing up helix angles is beneficial because it allows for a variety of center distances and unique applications.
screwshaft

Thread angle

The thread angle of a screw shaft is measured from the base of the head of the screw to the top of the screw’s thread. In America, the standard screw thread angle is 60 degrees. The standard thread angle was not widely adopted until the early twentieth century. A committee was established by the Franklin Institute in 1864 to study screw threads. The committee recommended the Sellers thread, which was modified into the United States Standard Thread. The standardized thread was adopted by the United States Navy in 1868 and was recommended for construction by the Master Car Builders’ Association in 1871.
Generally speaking, the major diameter of a screw’s threads is the outside diameter. The major diameter of a nut is not directly measured, but can be determined with go/no-go gauges. It is necessary to understand the major and minor diameters in relation to each other in order to determine a screw’s thread angle. Once this is known, the next step is to determine how much of a pitch is necessary to ensure a screw’s proper function.
Helix angle and thread angle are 2 different types of angles that affect screw efficiency. For a lead screw, the helix angle is the angle between the helix of the thread and the line perpendicular to the axis of rotation. A lead screw has a greater helix angle than a helical one, but has higher frictional losses. A high-quality lead screw requires a higher torque to rotate. Thread angle and lead angle are complementary angles, but each screw has its own specific advantages.
Screw pitch and TPI have little to do with tolerances, craftsmanship, quality, or cost, but rather the size of a screw’s thread relative to its diameter. Compared to a standard screw, the fine and coarse threads are easier to tighten. The coarser thread is deeper, which results in lower torques. If a screw fails because of torsional shear, it is likely to be a result of a small minor diameter.

Material

Screws have a variety of different sizes, shapes, and materials. They are typically machined on CNC machines and lathes. Each type is used for different purposes. The size and material of a screw shaft are influenced by how it will be used. The following sections give an overview of the main types of screw shafts. Each 1 is designed to perform a specific function. If you have questions about a specific type, contact your local machine shop.
Lead screws are cheaper than ball screws and are used in light-duty, intermittent applications. Lead screws, however, have poor efficiency and are not recommended for continuous power transmission. But, they are effective in vertical applications and are more compact. Lead screws are typically used as a kinematic pair with a ball screw. Some types of lead screws also have self-locking properties. Because they have a low coefficient of friction, they have a compact design and very few parts.
Screws are made of a variety of metals and alloys. Steel is an economical and durable material, but there are also alloy steel and stainless steel types. Bronze nuts are the most common and are often used in higher-duty applications. Plastic nuts provide low-friction, which helps reduce the drive torques. Stainless steel screws are also used in high-performance applications, and may be made of titanium. The materials used to create screw shafts vary, but they all have their specific functions.
Screws are used in a wide range of applications, from industrial and consumer products to transportation equipment. They are used in many different industries, and the materials they’re made of can determine their life. The life of a screw depends on the load that it bears, the design of its internal structure, lubrication, and machining processes. When choosing screw assemblies, look for a screw made from the highest quality steels possible. Usually, the materials are very clean, so they’re a great choice for a screw. However, the presence of imperfections may cause a normal fatigue failure.
screwshaft

Self-locking features

Screws are known to be self-locking by nature. The mechanism for this feature is based on several factors, such as the pitch angle of the threads, material pairing, lubrication, and heating. This feature is only possible if the shaft is subjected to conditions that are not likely to cause the threads to loosen on their own. The self-locking ability of a screw depends on several factors, including the pitch angle of the thread flank and the coefficient of sliding friction between the 2 materials.
One of the most common uses of screws is in a screw top container lid, corkscrew, threaded pipe joint, vise, C-clamp, and screw jack. Other applications of screw shafts include transferring power, but these are often intermittent and low-power operations. Screws are also used to move material in Archimedes’ screw, auger earth drill, screw conveyor, and micrometer.
A common self-locking feature for a screw is the presence of a lead screw. A screw with a low PV value is safe to operate, but a screw with high PV will need a lower rotation speed. Another example is a self-locking screw that does not require lubrication. The PV value is also dependent on the material of the screw’s construction, as well as its lubrication conditions. Finally, a screw’s end fixity – the way the screw is supported – affects the performance and efficiency of a screw.
Lead screws are less expensive and easier to manufacture. They are a good choice for light-weight and intermittent applications. These screws also have self-locking capabilities. They can be self-tightened and require less torque for driving than other types. The advantage of lead screws is their small size and minimal number of parts. They are highly efficient in vertical and intermittent applications. They are not as accurate as lead screws and often have backlash, which is caused by insufficient threads.

China wholesaler 61902 Metric/Inch Deep Groove Ball Roller Bearing Black Corner Good Price Large Stock Single Double Row Manufacture with Hot sellingChina wholesaler 61902 Metric/Inch Deep Groove Ball Roller Bearing Black Corner Good Price Large Stock Single Double Row Manufacture with Hot selling