Product Description
DETA
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ZheJiang Leicester Bearing Technology Co., Ltd. is a specialized manufacturer that produces various types of bearings, including cylindrical roller bearings (7 series, 97 series, 3007 series, 20097 series), British standard tapered roller bearings, deep groove ball bearings, spherical plain bearings, self-aligning roller bearings, rolling mill bearings, and a variety of non-standard bearings.
At our core, we believe in “Quality, Creating Value,” and we have gained the trust and support of customers both domestically and internationally by delivering high-quality products.
In 2002, we received certification from the China Import and Export Product Quality Verification Center and obtained ISO 9001, ISO 2000, and IATF 16949 quality management system certifications. Our successful collaborations with renowned domestic and international enterprises have made us reliable and stable suppliers. Moreover , we have provided bearing components to well-known bearing manufacturers worldwide.
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PRODUCT OVERVIEW
Bearing Number | Dimensions (mm) | Weight (KG) | |||
New | Old | Â | Â | Â | Â |
 |  | d | D | B | Kg |
71820 | 1036820 | 100 | 125 | 13 | 0.309 |
71821 | 1036821 | 105 | 130 | 13 | 0.505 |
71822 | 1036822 | 110 | 140 | 16 | 0.505 |
71824 | 1036824 | 120 | 150 | 16 | 0.568 |
71828 | 1036828 | 140 | 175 | 18 | 0.93 |
71832 | 1036832 | 160 | 200 | 20 | 1.32 |
71834 | 1036834 | 170 | 215 | 22 | 1.87 |
71836 | 1036836 | 180 | 215 | 22 | 2.45 |
71840M | 1036840H | 220 | 250 | 24 | 2.69 |
71844M | 1036844H | 260 | 270 | 24 | 2.68 |
71852M | 1036852H | 300 | 320 | 28 | 4.85 |
71860M | 1036860H | 320 | 380 | 38 | 11.1 |
71864M | 1036864H | 360 | 400 | 38 | 11.8 |
71872M | 1036872H | 380 | 440 | 38 | 20.5 |
71876M | 1036876H | 400 | 480 | 46 | 20.5 |
71880M | 1036880H | 440 | 500 | 46 | 21.7 |
71888M | 1036888H | 460 | 540 | 46 | 23.6 |
71892M | 1036892H | 100 | 580 | 56 | 33.5 |
71920CTA | 1036920 | 105 | 140 | 20 | 0.016 |
71921CTA | 1036921 | 110 | 145 | 20 | 0.016 |
71922CTA | 1036922 | 120 | 150 | 20 | 0.016 |
71924C | 1 0571 4 | 120 | 165 | 22 | 0.016 |
71924CM | BI036924 | 120 | 165 | 22 | 0.016 |
71924CTA | 1036924 | 130 | 165 | 22 | 0.016 |
71926CTA | 1036926 | 140 | 180 | 24 | 0.016 |
71928CTA | 1036928 | 150 | 190 | 24 | 0.016 |
71930CTA | 1036930 | 160 | 210 | 28 | 0.016 |
71932CTA | 1036932 | 170 | 220 | 28 | 0.016 |
71934CTA | 1036934 | 180 | 230 | 28 | 0.016 |
71936CM | Â | 180 | 250 | 33 | 5.29 |
71936CTA | 1036936 | 190 | 250 | 33 | 5.29 |
71938CTA | 1036938 | 190 | 260 | 33 | 5.29 |
71938AC | B1346938 | 200 | 260 | 66 | 5.29 |
71940CTA | 1036940 | 260 | 280 | 38 | 5.29 |
71952B | Â | 260 | 360 | 46 | 5.29 |
71952AC | Â | 260 | 360 | 46 | 13.8 |
71952M/YA | Â | 280 | 360 | 46 | 13.8 |
71956AC | Â | 380 | 380 | 46 | 15.7 |
71976B | Â | Â | 520 | 65 | 42.1 |
 Angular Contact Ball Bearings can withstand both radial and axial loads. Can work at higher speeds. The larger the contact angle, the higher the axial load carrying capacity. The contact angle is the angle between the line connecting the contact point of the ball and the raceway in the radial plane and the vertical line of the bearing axis. High precision and high speed bearings typically take a 15 degree contact angle. Under the axial force, the contact angle will increase.
high precision paired angular contact ball bearingsÂ
Angular contact ball bearings have raceways on the inner and outer rings, and the inner and outer rings can be displaced relative to each other along the axial direction of the bearing. These bearings are particularly suitable for withstanding CZPT loads, ie loads acting simultaneously in both radial and axial directions. The axial load bearing capacity of the angular contact ball bearing increases as the contact angle α increases. The contact angle is the angle between the line connecting the contact point of the ball and the raceway in the radial plane and the vertical line of the bearing axis.
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Detailed Photos
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OUR PRODUCTS
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SCOPE OF APPLICATION
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PRODUCTION PROCESS
PRODUCT PACKAGING
1.industrial packing+industrial cartons+pallets
2.single brand box+brand cartons+pallets
3.follow customer’s requests
A.Plastic Tubes or Single Boxes ( Usually 10pcs in 1 plastic tube for steel bearings);
B.Cartons ( No more than 30kg for 1 carton );
C. Pallet ( Usually more than 400kg totally will use pallet )
D. Delivery time :7-35 days ( by sea or by air ) Â
Generally,We will choose the most suitable packing method for products. If you have any special requirements for packing, please contact us in advance.
Company Profile
“Reliable quality, competitive prices, and excellent service” have always been our guiding principles. We have implemented a stringent quality control system, starting from raw material procurement to product manufacturing. Our company boasts a strong technical team, well-equipped testing facilities, and a robust ability to develop new products. With a commitment to delivering high-quality products and maintaining a good reputation, we aim to earn the trust of more customers.
ZheJiang Leicester Bearing Technology Co., Ltd. warmly welcomes both new and existing customers for discussions, guidance, and collaboration. We are eager to establish direct sales partnerships with businesses in various industries, both within the country and internationally.
As we embrace our dreams and uphold our values, honesty remains the foundation of our company. ZheJiang Leicester Bearing Technology Co., Ltd. looks forward to creating a bright future together with you!
OUR STRENGTHS
Q1: Can I get some samples?
A: Yes, sample order is available for quality check and market test. But you have to pay the sample cost and express cost. Q2
: Do you receive customized order?
A: Yes, ODM & OEM are welcomed.
Q3: What’s the lead time?
A: According to the order quantity, small order usually need 3-5 days, big order need negotiation.
Q4: What’s your payment terms?
A: We receive Escrow, T/T, West Union, Cash and etc.
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Contact Angle: | 15° |
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Aligning: | Non-Aligning Bearing |
Separated: | Unseparated |
Samples: |
US$ 0.1/Piece
1 Piece(Min.Order) | Order Sample |
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Customization: |
Available
| Customized Request |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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Payment Method: |
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Initial Payment Full Payment |
Currency: | US$ |
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Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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How does Preload Affect the Performance and Efficiency of Ball Bearings?
Preload is a crucial factor in ball bearing design that significantly impacts the performance, efficiency, and overall behavior of the bearings in various applications. Preload refers to the intentional axial force applied to the bearing’s rolling elements before it is mounted. This force eliminates internal clearance and creates contact between the rolling elements and the raceways. Here’s how preload affects ball bearing performance:
- Reduction of Internal Clearance:
Applying preload reduces the internal clearance between the rolling elements and the raceways. This eliminates play within the bearing, ensuring that the rolling elements are in constant contact with the raceways. This reduced internal clearance enhances precision and reduces vibrations during operation.
- Increased Stiffness:
Preloaded bearings are stiffer due to the elimination of internal clearance. This increased stiffness improves the bearing’s ability to handle axial and radial loads with higher accuracy and minimal deflection.
- Minimized Axial Play:
Preload minimizes or eliminates axial play within the bearing. This is especially important in applications where axial movement needs to be minimized, such as machine tool spindles and precision instruments.
- Enhanced Rigidity:
The stiffness resulting from preload enhances the bearing’s rigidity, making it less susceptible to deformation under load. This is critical for maintaining precision and accuracy in applications that require minimal deflection.
- Reduction in Ball Slippage:
Preload reduces the likelihood of ball slippage within the bearing, ensuring consistent contact between the rolling elements and the raceways. This leads to improved efficiency and better load distribution.
- Improved Running Accuracy:
Preloading enhances the running accuracy of the bearing, ensuring that it maintains precise rotational characteristics even under varying loads and speeds. This is essential for applications requiring high accuracy and repeatability.
- Optimized Performance at High Speeds:
Preload helps prevent skidding and slipping of the rolling elements during high-speed operation. This ensures that the bearing remains stable, reducing the risk of noise, vibration, and premature wear.
- Impact on Friction and Heat Generation:
While preload reduces internal clearance and friction, excessive preload can lead to higher friction and increased heat generation. A balance must be struck between optimal preload and minimizing friction-related issues.
- Application-Specific Considerations:
The appropriate amount of preload depends on the application’s requirements, such as load, speed, accuracy, and operating conditions. Over-preloading can lead to increased stress and premature bearing failure, while under-preloading may result in inadequate rigidity and reduced performance.
Overall, preload plays a critical role in optimizing the performance, accuracy, and efficiency of ball bearings. Engineers must carefully determine the right preload level for their specific applications to achieve the desired performance characteristics and avoid potential issues related to overloading or inadequate rigidity.
How do Miniature Ball Bearings Differ from Standard-sized Ones, and Where are They Commonly Used?
Miniature ball bearings, as the name suggests, are smaller in size compared to standard-sized ball bearings. They have distinct characteristics and are designed to meet the unique requirements of applications that demand compactness, precision, and efficient rotation in confined spaces. Here’s how miniature ball bearings differ from standard-sized ones and where they are commonly used:
- Size:
The most noticeable difference is their size. Miniature ball bearings typically have outer diameters ranging from a few millimeters to around 30 millimeters, while standard-sized ball bearings have larger dimensions suitable for heavier loads and higher speeds.
- Load Capacity:
Due to their smaller size, miniature ball bearings have lower load-carrying capacities compared to standard-sized bearings. They are designed for light to moderate loads and are often used in applications where precision and compactness are prioritized over heavy load support.
- Precision:
Miniature ball bearings are known for their high precision and accuracy. They are manufactured to tighter tolerances, making them suitable for applications requiring precise motion control and low levels of vibration.
- Speed:
Miniature ball bearings can achieve higher speeds than standard-sized bearings due to their smaller size and lower mass. This makes them ideal for applications involving high-speed rotation.
- Friction and Efficiency:
Miniature ball bearings generally have lower friction due to their smaller contact area. This contributes to higher efficiency and reduced heat generation in applications that require smooth and efficient motion.
- Applications:
Miniature ball bearings find applications in various industries and sectors:
- Electronics and Consumer Devices:
They are used in small motors, computer disk drives, printers, and miniature fans, where space is limited but precise motion is essential.
- Medical and Dental Equipment:
Miniature bearings are used in medical devices such as surgical instruments, dental handpieces, and diagnostic equipment due to their precision and compactness.
- Robotics and Automation:
Miniature ball bearings are integral to robotic arms, miniature conveyors, and automation systems, enabling precise movement in confined spaces.
- Aerospace and Defense:
They are used in applications like UAVs (drones), aerospace actuators, and satellite components where size and weight constraints are critical.
- Optics and Instrumentation:
Miniature bearings play a role in optical instruments, cameras, and measuring devices, providing smooth rotation and accurate positioning.
Overall, miniature ball bearings are specialized components designed for applications where space, precision, and efficient rotation are paramount. Their compactness and high precision make them crucial in various industries requiring reliable motion control in limited spaces.
How does Lubrication Impact the Performance and Lifespan of Ball Bearings?
Lubrication plays a critical role in the performance and lifespan of ball bearings. Proper lubrication ensures smooth operation, reduces friction, minimizes wear, and prevents premature failure. Here’s how lubrication impacts ball bearings:
- Friction Reduction:
Lubrication creates a thin film between the rolling elements (balls) and the raceways of the bearing. This film reduces friction by separating the surfaces and preventing direct metal-to-metal contact. Reduced friction results in lower energy consumption, heat generation, and wear.
- Wear Prevention:
Lubricants create a protective barrier that prevents wear and damage to the bearing’s components. Without proper lubrication, the repeated rolling and sliding of the balls against the raceways would lead to accelerated wear, surface pitting, and eventual failure.
- Heat Dissipation:
Lubricants help dissipate heat generated during operation. The rolling elements and raceways can generate heat due to friction. Adequate lubrication carries away this heat, preventing overheating and maintaining stable operating temperatures.
- Corrosion Resistance:
Lubrication prevents moisture and contaminants from coming into direct contact with the bearing’s surfaces. This helps protect the bearing against corrosion, rust, and the formation of debris that can compromise its performance and longevity.
- Noise Reduction:
Lubricated ball bearings operate quietly because the lubricant cushions and dampens vibrations caused by the rolling motion. This noise reduction is crucial in applications where noise levels need to be minimized.
- Seal Protection:
Lubricants help maintain the effectiveness of seals or shields that protect the bearing from contaminants. They create a barrier that prevents particles from entering the bearing and causing damage.
- Improved Efficiency:
Properly lubricated ball bearings operate with reduced friction, leading to improved overall efficiency. This is especially important in applications where energy efficiency is a priority.
- Lifespan Extension:
Effective lubrication significantly extends the lifespan of ball bearings. Bearings that are properly lubricated experience less wear, reduced fatigue, and a lower likelihood of premature failure.
- Selection of Lubricant:
Choosing the right lubricant is essential. Factors such as speed, temperature, load, and environmental conditions influence the choice of lubricant type and viscosity. Some common lubricant options include grease and oil-based lubricants.
- Regular Maintenance:
Regular lubrication maintenance is crucial to ensure optimal bearing performance. Bearings should be inspected and relubricated according to manufacturer recommendations and based on the application’s operating conditions.
In summary, proper lubrication is essential for the optimal performance, longevity, and reliability of ball bearings. It reduces friction, prevents wear, dissipates heat, protects against corrosion, and contributes to smooth and efficient operation in various industrial and mechanical applications.
editor by CX 2024-01-15