The RU Series Crossed Roller Bearing from FTM is a high-precision bearing designed specifically for applications requiring high load capacity and rigidity. As part of the crossed roller bearing family, RU bearings are unique because they feature integrated inner and outer rings with mounting holes, allowing for direct installation without the need for housings or fixing flanges.
Typically manufactured from high-strength materials like hardened stainless steel, certain custom crossed roller bearings from FTM can also include seals to prevent contaminants from entering and to extend service life in harsh environments.
FTM’s custom crossed roller bearings thus ensure stable rotational accuracy and torque, providing dependable performance in demanding conditions.
Standard sizes are available in the table below. For customization inquiries, please email [email protected].
|
Model Number |
Main Dimensions |
Shoulder Height |
Basic Load Rating |
Mass |
|||||
|
Inner Diameter |
Outer Diameter |
Height B |
min |
ds |
Dh |
Cr kN |
Cor |
kg |
|
|
RU22 |
10 |
34 |
8 |
0.3 |
18.4 |
25.2 |
1.35 |
1.46 |
0.05 |
|
RU27 |
10 |
52 |
8 |
0.5 |
22.4 |
31.6 |
3.49 |
3.33 |
0.12 |
|
RU42 |
20 |
70 |
12 |
0.5 |
36 |
46 |
7.3 |
8.33 |
0.28 |
|
RU66 |
35 |
95 |
15 |
0.5 |
58 |
75 |
17.53 |
22.31 |
0.6 |
|
RU85 |
55 |
120 |
15 |
0.5 |
78 |
94 |
20.31 |
29.55 |
1.1 |
|
RU124(G) RU124X |
80 |
165 |
22 |
1 |
115 |
133 |
33 |
50.85 |
2.61 |
|
RU148(G) RU148X |
90 |
210 |
25 |
1.5 |
134 |
161 |
49 |
76.83 |
4.95 |
|
RU178(G) RU178X |
115 |
240 |
28 |
1.5 |
162 |
194 |
80.32 |
134.9 |
6.78 |
|
RU228(G) RU228X |
160 |
295 |
35 |
2 |
207 |
247 |
103.5 |
172.8 |
10.5 |
|
RU297(G) RU277X |
210 |
380 |
40 |
2.5 |
272 |
320 |
156 |
281 |
21.3 |
|
RU445(G) RU445X |
350 |
540 |
45 |
2.5 |
417 |
473 |
222 |
473 |
35.4 |
Key Features of Custom Crossed Roller Bearings:
Integrated Design: The RU crossed roller bearing series includes mounting holes, eliminating the need for pressing flanges or housings, thus simplifying installation and reducing additional components.
High Rigidity and Precision: Known for their high rigidity and precise rotation, RU bearings can withstand large radial, axial, and moment loads, ensuring smooth rotation even under heavy loads and in space-constrained applications.
Uniform Load Distribution: The alternating cross-roller arrangement evenly distributes loads across the bearing, enhancing its lifespan and reliability.
Compact Size: The RU series saves space in machine tools.
Customizable Features: Crossed roller bearings can be tailored for size, precision, surface roughness, material, and surface treatment to seamlessly match machinery or robotic requirements, with sizes ranging from 10mm to 250mm.
Application Areas: RU crossed roller bearings are used in precision applications such as industrial robots, machine tools, medical equipment, and optical instruments, where high precision and load-bearing capacity are critical.
Shaoxing Shangyu Flight Seiko Machinery Co., Ltd. (FTM), founded in 2006, is China RU Crossed Roller Bearing Suppliers and Wholesale RU 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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Shaoxing Shangyu Flight Seiko Machinery Co., Ltd. (FTM) leverages over 30 years of technical design experience to deliver high-performance bearing solutions. The FTM RU Series Crossed Roller Bearing is a testament to this expertise, engineered for applications that demand exceptional precision, high rigidity, and superior load capacity in a compact, easy-to-install package.
The RU Series is a unique configuration within the crossed roller bearing family, setting it apart with its distinctive design:
As a specialized manufacturer focusing on non-standard and high-precision bearings (import substitution), FTM offers significant advantages in material selection and customization:
The exceptional characteristics of the RU Series make it the preferred choice for several high-tech and industrial applications:
The key differentiator is the ring structure:
| Series | Inner Ring | Outer Ring | Mounting |
|---|---|---|---|
| RU Series | Integrated (one piece) | Integrated (one piece) | Direct Bolt-Down (most compact) |
| RB/RE Series | Split (two halves) | Integrated (one piece) | Typically requires a separate housing |
1. What is the main advantage of the RU Series' integrated design?
The main advantage is simplification of the surrounding machine structure. The integrated inner/outer rings with mounting holes eliminate the need for separate housing, clamping plates, or fixing flanges, leading to a more compact design and faster, more accurate installation.
2. Can FTM provide the RU Series with special corrosion protection?
Yes. FTM specializes in customization. If the application environment is harsh or humid, we can manufacture the RU Crossed Roller Bearing using hardened stainless steel or apply specific surface treatments to enhance corrosion resistance.
3. How does the RU bearing handle moment loads?
The crossed roller arrangement is intrinsically excellent at handling high overturning moment loads (moment loads). The line contact and 90-degree V-groove configuration ensure uniform load distribution, providing superior stiffness and precision under eccentric loading.
4. What information do I need to provide for a custom non-standard RU bearing quotation?
To accurately quote a custom non-standard RU bearing, we require the following key information: Required bore/outer diameter, required load capacity (radial/axial/moment), required rotational accuracy, operating environment (temp/contamination), and required service life.
5. How do I ensure correct mounting and achieve the stated precision?
To achieve optimal performance, the mounting surface must be precisely machined (flatness and perpendicularity) to match the bearing's inherent precision. Due to the high-precision nature, FTM recommends following the specified torque requirements for the mounting bolts to avoid ring deformation.
Ready to enhance the precision and performance of your machinery? Contact FTM today to discuss how our custom-engineered RU Series Crossed Roller Bearings can provide the ideal solution for your demanding application.
If you have any questions or would like to know more about bearings, please feel free to contact us!
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