HRB Series Crossed Roller Bearings
A crossed roller bearing with a split outer ring and integral inner ring, designed for compact precision assemblies requiring accurate inner-ring rotation.
Key Parameters
| Series | HRB Series |
|---|---|
| Design | Two-piece split outer ring; integral inner ring |
| Roller Arrangement | Cylindrical rollers arranged alternately at 90° |
| Seal Type | Single-sided or double-sided sealed |
| Load Capability | Radial load, bidirectional axial load and overturning moment |
| Rotating Ring | Primarily suitable for inner-ring rotation |
| Main Benefits | Easy assembly, compact design, high rigidity and stable inner-ring rotational accuracy |
HRB Series Crossed Roller Bearings Overview
The HRB series is the basic type of crossed roller bearing. Its outer ring is split into two sections while the inner ring has an integral construction, making it particularly suitable for applications requiring accurate inner-ring rotation. The split outer ring facilitates assembly, while the integral inner ring supports stable rotary performance.
Design & Performance Features
- Cylindrical rollers are alternately arranged at 90°, forming a highly rigid load-carrying structure within a compact cross-section.
- A single bearing can accommodate radial loads, bidirectional axial loads and overturning moments.
- The two-piece split outer ring facilitates assembly, while the integral inner ring supports stable accuracy during inner-ring rotation.
- The compact design helps reduce mechanism size while maintaining load capacity and rotational rigidity.
- Suitable for precision rotary mechanisms requiring accurate inner-ring rotation, compact installation and multi-directional load capacity.
Structure Illustration
Mounting & Operating Notes
Because the outer ring is split, keep both outer-ring sections correctly aligned and secure them uniformly with a sufficiently rigid housing or flange.
Mating surfaces should provide good flatness, concentricity and finish; avoid uneven clamping that may deform the rings.
Fits, tolerances, tightening sequence, lubrication and operating clearance should be selected according to load, accuracy, speed and temperature conditions.
Typical Applications
Industrial robot joints, manipulators and end effectors
Precision rotary tables, indexing units and machine-tool rotary axes
Semiconductor, inspection and automation equipment
Medical, optical and high-precision rotary devices
Series & Model Information
The HRB prefix identifies crossed roller bearings with a split outer ring and integral inner ring. Select the exact model according to bore diameter d, outside diameter D, width B, roller pitch circle diameter dp, basic load ratings, seal arrangement, reference mass and mounting conditions. The table below shows HRB10016 as a representative model only.
