Product Description

Most Important
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* We have been manufacturing high-precision angular contact ball bearings for the domestic market and some ZheJiang and HangZhou trading companies for 10 years, and a few years ago, we exported high-precision angular contact ball bearings offline by ourselves;
*This year, we are going to export high precision angular contact ball bearings online, if you trade on Alibaba, you will get the lowest price;
 *For UKL bearings, which have been sold worldwide for 7 years, we can quote you an accurate EXW price within an hour, with comprehensive experience in FOB, CIF, DDU, DDP; familiar with transportation, documents, customs clearance, etc.;
*Because we are a factory, so
1) One-stop shopping (bearings, gears, sprockets, shafts, welding, molds, etc.);
 2) Lowest price, controllable quality, guaranteed after-sales service and on-time delivery;
 *Instant contact is open 24 hours, just send us your enquiry; 
*Welcome to visit our factory!

Products Description
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High Precision Angular Contact Ball Bearings

1. UKL Angular contact ball bearing have high limit rotational speed, they can carry radial load and axial load simultaneously, they can also with stand purely radial load. The axial load carrying capacity depend on the magnitude of contact angle and increases with increasing contact angle. High speed series with small ball design. The material used for bearing ring is high purity bearing steel made in Europe with a special heat treatment process, cold treatment process and material modification technology greatly improve the fatigue life of this series of bearing. The contact angle include 15 degree and 25 degree, the paired use can bear both axial load and radial load or synthetic load. Using the outer ring guided phenolic resin bakelite cloth cage, can long term work stably less than 80ºC.

Product Process

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Factory&Equipment
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Inspection%Packaging
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Certifications
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FAQ
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1.Q:What the MOQ of your company?
A:MOQ is 1pc.
2.Q:Could you accept OEM and customize?
A:YES,we can customize for you according to sample or drawing.
3.Q:Could you supply sample for free?
A:Yes,we can supply sample for free,do you mind to buy her a ticket?
4.Q:IS you company factory or Trade Company?
A:We have our own factory ;our type is factory +trade.
5.Q:Could you tell me the material of your bearing?
A:We have chrome steel,carbon steel and staninless steel,ceramic and plastic material.
6.Q:Could you offer door to door service?
A:Yes,by express(DHL,FEDEX,TNT,EMS,4-10 days to your city.)
7.Q:Coould you tell me the payment term of your company can accept?
A:T/T.L/C,Western Union,PayPal
8.Q:Could you tell me the delivery time of your doods?
A:If stock,in 7days or base on your order quantity.

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 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.