RA series cross roller bearing is a kind of small size and lightweight cross roller bearing in which the wall thickness is thinner. it is small and can withstand heavy loads. the one-piece inner & outer ring structure provides high rigidity, high accuracy, and smooth rotation; suitable for inner and outer ring rotation. The ly small cross-sectional area allows it to be used in lightweight, compact devices， such as rotating parts of robots and robotic arms.
RA series cross roller bearing characteristics:
| Shaft Diameter |
Model Number | Main Dimensions | Shoulder Height | Basic Load Rating (Radial) | Mass | ||||||
| Inner Diameter d |
Outer Diameter D |
Width T |
Chamfer Cmin | da | Dh | C kN |
C0 kN |
KG | |||
|
10 |
RA1005 |
10 |
43 |
5 |
0.15 |
21.5 |
28 |
1.50 |
1.41 |
0.046 |
|
|
20 |
RA2005 |
20 |
53 |
5 |
0.15 |
31.5 |
38 |
1.89 |
2.15 |
0.066 |
|
|
30 |
RA3005 |
30 |
63 |
5 |
0.15 |
41.5 |
47.5 |
2.14 |
2.75 |
0.083 |
|
|
40 |
RA4005 |
40 |
73 |
5 |
0.15 |
51.5 |
58 |
2.44 |
3.49 |
0.103 |
|
RA Crossed Roller Bearing is a type of precision bearing designed to handle both radial and axial loads simultaneously. Its construction features cylindrical rollers arranged at a 90-degree angle to each other, with each roller being separated by a cage or spacer. This design allows the bearing to support loads from multiple directions (radial, axial, and moment loads) with a high degree of rigidity and smooth motion.
Here are key features of the RA crossed roller bearing:
1. Compact Design: It typically has a slim profile and is designed to save space while maintaining high stiffness and load capacity.
2. High Rigidity: The crossed arrangement of rollers provides increased rigidity, making it suitable for applications where high stiffness and precise movement are required.
3. Multi-directional Load Support: Unlike traditional bearings, the RA crossed roller bearing can support loads in all directions—radial, axial, and moment loads simultaneously.
4. Accurate Rotation: These bearings are known for their high rotational accuracy, making them ideal for applications in robotics, machine tools, medical equipment, and precision measurement devices.
5. Reduced Torque Variation: The rollers in RA crossed roller bearings are in continuous contact with the raceways, which minimizes torque fluctuations and ensures smoother rotation.
These bearings are commonly used in demanding applications such as:
- Industrial robots
- CNC machines
- Rotary tables
- Medical imaging systems
Shaoxing Shangyu Flight Seiko Machinery Co., Ltd. (FTM), founded in 2006, is China RA Crossed Roller Bearing Suppliers and Wholesale RA Crossed Roller Bearing Factory.And it an enterprise focusing on the R&D, manufacturing, and customization of non-standard bearings, high-precision bearings (import substitution), and bearing accessories and mechanical parts. With more than 30 years of technical design experience, FTM has earned an excellent reputation in the field of high-quality bearings. Our professional technical team provides domestic and foreign customers with high-quality bearing solutions in engineering machinery, textile machinery, and other fields.
Relying on years of professional manufacturing and technical skills, FTM actively introduces advanced CNC machine tools from Japan to ensure product processing accuracy and stability. In addition, FTM's bearing product research is guided by a doctor of tribology. We adhere to the corporate philosophy of innovation and development, and our products are exported to many countries and regions around the world. We have long been supporting and producing various types of bearings for many world-renowned companies, maintaining good production relationships. Spin into eternity, inherit excellence, and create the future together. Choose FTM, and we will be your best choice for bearing solutions.
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