Key Features
- High Load Capacity:
- The crossed arrangement of cylindrical rollers allows the bearing to handle radial, axial, and moment loads simultaneously.
- Compact & Lightweight:
- Its integrated design reduces thickness and simplifies installation, making it ideal for applications with space constraints.
- Excellent Rotation Accuracy:
- Manufactured to P5, P4, or P2 precision grades, ensuring smooth rotation and minimal runout for precision instruments.
- Stable Performance:
- Advanced heat treatment and surface finishing ensure superior wear resistance and long service life, even under continuous operation.
Products Description
| Inner Diameter (d) | 300mm |
| Outer Diameter (D) | 405mm |
| Roller Pitch Diameter (Dpw) | 351.6mm |
| Width (B B1) | 40mm |
| Chamfer (rmin) | 2.5 |
| Shoulder Size(ds) | 326 |
| Shoulder Size(Dh) | 377 |
| Basic Load Rating (Radial) Cr (kN) | 212 |
| Basic Load Rating (Radial) Cor (kN) | 409 |
| weight (kg) | 17.2 |
| Accuracy Grade | P5 / P4 / P2 |
| Rotation Type | Inner/Outer Ring Rotation |
| Application | Precision Rotary Tables, Industrial Robots, Indexing Equipment |
Customization & Delivery
Cages, seals, and surface treatments can be customized according to application needs, including special coatings for corrosion resistance or high-speed use. Each bearing is packaged securely with moisture protection and shipped ready for immediate installation.
RB30040 Crossed Roller Bearing - FAQ
How should RB30040 be stored before installation?
Bearings should be stored in a clean, dry environment with the original packaging intact. Avoid direct exposure to moisture or dust to preserve surface integrity and lubrication quality.
Is the RB30040 suitable for vertical installation?
Absolutely. The bearing's compact design and uniform load distribution allow for stable operation in vertical or inclined positions without affecting precision or service life.
What makes the RB30040 different from smaller RB series models?
Unlike smaller RB bearings, the RB30040 is engineered for heavy-duty rotary systems requiring higher rigidity and larger load support. Its structure maintains precision even under high torque and vibration, making it ideal for large-scale automation and industrial robots.
Can RB30040 operate at high rotational speeds?
Yes. The RB30040 supports stable performance at medium-to-high rotational speeds when properly lubricated. Its precision manufacturing minimizes friction and temperature rise, ensuring smooth motion and consistent accuracy.
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