RB25040 Crossed Roller Bearing
The RB25040 Crossed Roller Bearing is a precision bearing designed for applications requiring high rigidity, compact structure, and smooth rotational accuracy. This model features separable inner and outer rings, making installation and maintenance easy while ensuring consistent performance even under complex loads.
Each bearing is constructed with cylindrical rollers arranged orthogonally in a cross pattern. This structure allows the RB25040 bearing to support radial, axial, and moment loads simultaneously-ideal for applications such as rotary tables, industrial robots, machine tools, and precision measuring instruments.
Manufactured with premium bearing steel and precision-ground raceways, the RB25040 delivers long service life, minimal friction, and excellent rotational precision. Its compact design helps reduce overall assembly space while maintaining high load capacity, making it a preferred choice for engineers and system designers seeking efficient motion solutions.
Technical Sepcifications
| Parameter | Specification |
|---|---|
| Model | RB25040 |
| Inner Diameter (d) | 250mm |
| Outer Diameter (D) | 355mm |
| Roller Pitch Diameter (Dpw) | 300.7mm |
| Width (B) | 40mm |
| Chamfer (rmin) | 2.5 |
| Shoulder Size (ds) | 275 |
| Shoulder Size (Dh) | 326 |
| Basic Load Rating (Radial) Cor (kN) | 195 |
| Basic Load Rating (Radial) Cr (kN) | 348 |
| weight (kg) | 14.8 |
| Structure | Separable outer ring, integral inner ring |
| Precision Class | P4 / P5 available |
| Lubrication | Grease or oil lubrication optional |
RB25040 Crossed Roller Bearing – FAQ
What makes the RB25040 different from other RB series crossed roller bearings?
The RB25040 stands out for its larger bore size and thicker cross section, providing higher rigidity and better load distribution. It's ideal for medium to large rotary mechanisms that need both compact structure and enhanced stiffness compared to smaller RB models.
Are there customization options for the RB25040 bearing?
Absolutely. Users can choose different cage materials (such as brass, resin, or steel), special surface treatments (like black oxide or nickel plating), and custom packaging for protection during long-distance shipment.
Can the RB25040 handle both radial and axial loads?
Yes. The rollers in the RB25040 are arranged at right angles, enabling it to support radial, axial, and moment loads simultaneously. This design ensures smooth and stable rotation even under complex load conditions.
How does the RB25040 improve machine tool performance?
The RB25040 provides high rotational accuracy and rigidity, reducing vibration and deflection in machine tool spindles or rotary tables. This enhances machining precision, surface finish quality, and overall production stability.
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