SUN AUTOMATION GROUP LIMITED was founded in 1986 and had been focusing on exporting high bearing ever since. We have a stock warehouse and provide a variety of stock bearings. For special and rare ones, we can distribute the goods to the agents in the country of origin of each brand, and the MOQ is as low as 1 set. Our wide variety of BER precision bearings are subject to severe thermal loads during rapid acceleration or deceleration. We work with professional bearing manufacturers and have invested over 300 million in upgrading product formulas.
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25BER19S Bearing
25BER19S is ultra high-speed angular contact ball bearing. The dimension:25*42*9mm. The Add to Inquiry -
25BER19H Bearing
A major trend in the machine tool industry is higher maximum spindle speeds. In addition, machines Add to Inquiry -
BER Ball Bearing
A major trend in the machine tool industry is higher maximum spindle speeds. In addition, machines Add to Inquiry -
Ultra Precision Bearing
With high running accuracy, high-speed performance, and high system rigidity, Ultra precision Add to Inquiry -
Hong Kong BER Bearing
Hong Kong BER bearing is exposed to severe thermal loading conditions during rapid acceleration or Add to Inquiry
Why Choose Us?
Rich Experience
SUN AUTOMATION GROUP LIMITED specializes in delivering professional bearing solutions, leveraging nearly 40 years of experience in bearing support and industrial services to serve its customers effectively.
Production Capacity
Our warehouse has one of the largest inventories. We have an annual output of 5 million sets of bearings. We guarantee direct shipments, timely delivery, and a single source of supply.
Production Market
Our products have been exported to North America, Europe, the Middle East, Brazil, South Africa, and Mexico and were well acknowledged by clients worldwide.
Professional Service
We have a 7*24 hours professional sales consultant team that can respond to your needs as quickly as possible and provide the fastest transportation method to bring you a high-quality and low-cost purchasing experience.

Hong Kong BER Bearing
Hong Kong BER bearing is exposed to severe thermal loading conditions during rapid acceleration or deceleration. These conditions are caused by drastic changes in the surrounding environment caused by heat generated by the motor, cooling of the enclosure, and other factors.
25BER19S Bearing
25BER19S Super High Speed Angular Contact Ball Bearings can withstand axial and radial loads while ensuring smooth, precise rotation at very high speeds. The bearings have a contact angle of 25 degrees and can withstand high axial loads.
Ultra Precision Bearing
With high running accuracy, high-speed performance, and high system rigidity, Ultra precision bearing is ideal for machine tools and other precision applications such as rolling mills, racing cars, and marine vessels. The bearings also minimize noise, vibration, and heat generation.
Specifications of BER Precision Bearing
|
D |
25mm |
A |
31mm |
|
D |
42mm |
Da min |
27.5mm |
|
B |
9mm |
Da max |
39.5mm |
|
C |
9mm |
Ra max |
0.3mm |
|
Angle(α) |
25° |
Weight |
0.042kgs |
|
A |
12.3mm |
Basic dynamic load rating (C) |
5.7kN |
|
B |
0.5mm |
Basic static load rating (C0) |
3.4kN |
|
R min |
0.3mm |
(Grease) Lubrication Speed |
35900 r/min |
|
R 1 min |
0.15mm |
(Oil) Lubrication Speed |
58000 r/min |
Application Industries of BER Precision Bearing
Aerospace
In aerospace applications, precision bearings are used in important parts like turbines, gearboxes, and landing gear systems.
They can handle both axial and radial loads with high accuracy. This is important for precise control and stability of aircraft during flight. Aerospace bearings are often made from special materials like ceramic or stainless steel. These materials provide durability, resist corrosion, and can handle high temperatures.
In high-speed aircraft turbines, precision bearings are crucial. They allow the turbine blades to spin smoothly at high speeds while handling the heat generation and heavy loads of flight. These bearings reduce friction, improve fuel efficiency, and help the engine last longer. This makes them vital for the safety and performance of the aircraft.
Medical Equipment
Precision bearings are crucial in surgical tools and MRI machines because they provide smooth and reliable movement. In surgical tools, these bearings enable accurate and controlled movements. This is important for minimally invasive procedures that require super precision.
In robotic surgical devices, precision bearings are crucial for improving accuracy and control during operations. For instance, in the da Vinci Surgical System, these bearings are built into the robotic arms. The arms hold and move surgical instruments for minimally invasive surgeries.
Automotive and Motor sports
In racing car engines, precision bearings reduce friction between moving parts. This allows the engine to operate more smoothly and efficiently.This not only increases power output but also helps prevent overheating.
Preventing overheating is vital during high-speed racing conditions. Similarly, in transmissions, precision bearings help support smooth gear changes. They also reduce wear, ensuring that the vehicle performs optimally.
Semiconductor Manufacturing
In the semiconductor industry, precision bearings are essential for high-precision tasks. They are involved in the manufacturing of microchips and electronic components. They are used in wafer handling systems to enable smooth and accurate movement of delicate silicon wafers. This helps prevent damage during various processes.
》Use the correct lubricant. There are grease and oil lubricants. Grease is most often used to lubricate bearings. However, some oil lubricants are best suited for high-temperature and high-speed applications. Your bearing manufacturer should provide you with a recommended lubricant and basic lubrication guidelines.
》Make sure you mount it correctly. Follow the manufacturer's installation/mounting guidelines. Mounting procedures are typically broken down into hot, hydraulic, or mechanical.
》Don't skip inspections. Most manufacturers will specify how often you should perform inspections. If none are available, create a maintenance program for your facility. For each inspection, look for signs of excessive wear and tear and other noticeable issues such as fractures, dirt, or corrosion.

Storage Requirements for BER Precision Bearing
Ball bearings are precision parts that can easily be contaminated or damaged if not cared for correctly. Always wear gloves when handling bearings to prevent corrosion from skin oils or sweat.
Store unused bearings horizontally in their original packaging in a clean, dry area at room temperature. This prevents moisture, dust, and dirt from entering the bearings prior to installation. Dropping or mishandling bearings can cause unseen damage that might not manifest until a later date.
Payment Terms
T.T with 30% downpayment, 70%before shipment.
Paypal or West Union also accept.
Packaging and Shipping
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Packaging: |
Wrapped by proctective film; |
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Packed by standard import & export wooden cases or palletization. |
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Shipping: |
By express, air, sea, railway. |

FAQ
We're well-known as one of the leading ber precision bearing manufacturers and suppliers in China. If you're going to buy high quality ber precision bearing with competitive price, welcome to get more information from our factory.
25BER19H Bearing, 25BER19S, BER Ball Bearing



