RB13025 Crossed Roller Bearing
The RB13025 crossed roller bearing is a compact, high-precision bearing designed for applications that require both rigidity and smooth rotation. With a separable inner ring and an integrated outer ring, it is widely used in robot joints, rotary tables, CNC machining centers, and measuring instruments. The design allows it to support radial, axial, and moment loads simultaneously within a limited installation space.
01
Compact and Lightweight
Thin-section design provides high space efficiency without sacrificing strength.
02
High Rigidity
Crossed roller arrangement ensures superior stiffness and minimal deformation under load.
03
Smooth Operation
Precision-machined raceways reduce vibration and torque variation.
04
Easy Assembly
Split inner ring allows easier installation and adjustment of preload.
Design Features
Inside the RB13025 bearing, cylindrical rollers are arranged in a 90° cross pattern, separated by precision cages. This structure enables high load-carrying capacity and excellent rotational accuracy. The one-piece outer ring enhances concentricity and stability after installation, ensuring superior positioning repeatability in demanding equipment.
Technical Specifications
| Inner Diameter (d) | 130mm |
| Outer Diameter (D) | 190mm |
| Roller Pitch Diameter(Dpw) | 158mm |
| Width (B) | 25mm |
| Chamfer (rmin) | 1.5 |
| Shoulder Size (ds) | 143 |
| Shoulder Size (Dh) | 174 |
| Basic Load Rating (Radial) Cr (kN) | 69.5 |
| Basic Load Rating (Radial) Cor (kN) | 107 |
| weight (kg) | 2.82 |
| Rotational Accuracy Grades | P5 / P4 / P2 (optional) |
Manufacturing & Quality Assurance
Each RB13025 bearing undergoes 100% dimensional and rotational testing before shipment. Optional surface treatments and materials are available to meet specific environmental or cleanliness requirements. Bearings are packaged in moisture-proof, vacuum-sealed pouches for long-term storage and safe transport.
RB13025 Crossed Roller Bearing - FAQ
How does the RB13025 compare with RE and RU series crossed roller bearings?
RB Series: Split inner ring, easy installation, good balance of rigidity and accuracy.
RE Series: Split outer ring, suitable for fixed inner ring applications.
RU Series: Integrated inner and outer rings with mounting holes, designed for compact units requiring direct installation.
Can RB13025 bearings be customized?
Yes. Options include custom preload settings, non-magnetic materials, special coatings, modified cage materials, and tailored surface finishes to meet specific environmental or performance requirements.
Is the RB13025 suitable for vertical mounting or inverted operation?
Yes. Due to its crossed roller arrangement and high rigidity, the RB13025 performs reliably in any mounting orientation, including vertical, horizontal, or inverted setups.
Can the RB13025 be used in vacuum or cleanroom environments?
Yes, when produced with stainless steel components, vacuum-compatible lubrication, and low outgassing materials, this model is suitable for semiconductor or vacuum robotics applications.
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