RB19025 Crossed Roller Bearing
The RB19025 Crossed Roller Bearing is a precision-engineered bearing designed for applications that demand high rigidity, compact structure, and exceptional rotational accuracy. This bearing integrates cylindrical rollers arranged orthogonally between the inner and outer rings, allowing it to support loads from multiple directions-radial, axial, and moment loads-with a single compact unit.
Technical Specifications
| Bearing Model | RB19025 |
| Inner Diameter (d) | 190 mm |
| Outer Diameter (D) | 240 mm |
| Roller Pitch Diameter (Dpw) | 219 mm |
| Width (B) | 25 mm |
| Chamfer (rmin) | 1 |
| Shoulder Size (ds) | 202 |
| Shoulder Size (Dh) | 222 |
| Basic Load Rating (Radial) Cr | 41.7 kN |
| Basic Load Rating (Radial) Cor | 82.9 kN |
| weight | 2.99 kg |
| Roller Type | Cylindrical Crossed Rollers |
| Material | Bearing Steel (SUJ2 / Equivalent) |
| Cage Type | Brass or Resin Cage |
| Precision Grade | P5, P4, P2 (Optional) |
Comparison of RU, RE, and RB Series Crossed Roller Bearings
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| Model number |
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RB Series | RE Series |
| Structure | Integrated inner and outer rings | Split outer ring, integral inner ring | Split inner ring, integral outer ring |
| Installation | Easy - no housing or flange needed | Requires housing for mounting | Requires housing for mounting |
| Accuracy | Very high - factory-adjusted clearance | High precision | High precision |
| Load Capacity | Supports radial, axial, and moment loads equally | Supports all-direction loads | Supports all-direction loads |
| Ideal Application | Direct mounting in compact mechanisms (robot joints, rotary tables) | Equipment requiring Inner ring rotation | Equipment requiring Outer ring rotation |
RB19025 Crossed Roller Bearing – FAQ
Can RB19025 be used in cleanroom environments?
Yes. With proper lubrication and sealing, the bearing can be adapted for cleanroom or vacuum environments used in semiconductor or medical equipment.
How often should the RB19025 be relubricated?
Lubrication intervals depend on operating conditions. Under normal use, re-greasing every 3,000–5,000 operating hours is recommended.
Does the RB19025 require special handling during installation?
Yes. The bearing should be handled carefully to avoid impact or contamination. Precision alignment tools are recommended for accurate mounting.
What are the common signs of wear in RB19025 bearings?
Increased vibration, uneven rotation, or abnormal noise can indicate wear. Regular inspection and lubrication can help prevent performance loss.
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