HRE Series Crossed Roller Bearings
A crossed roller bearing with a split inner ring and integral outer ring, designed for compact precision assemblies requiring accurate outer-ring rotation.
Key Parameters
| Series | HRE Series |
|---|---|
| Design | Two-piece split inner ring; integral outer ring |
| Roller Arrangement | Cylindrical rollers arranged alternately at 90° |
| Accuracy | P4 and P2 accuracy grades available |
| Load Capability | Radial load, bidirectional axial load and overturning moment |
| Rotating Ring | Primarily suitable for outer-ring rotation |
| Main Benefits | High precision, high rigidity, preload and compact design |
HRE Series Crossed Roller Bearings Overview
The HRE series is a basic crossed roller bearing type with the same dimensional series as HRB. Its inner ring is split into two sections and its outer ring is integral, making it particularly suitable for applications requiring accurate outer-ring rotation. The integral outer ring supports stable rotational accuracy, while the split inner ring facilitates assembly.
Structure Illustration
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 inner ring facilitates assembly, while the integral outer ring supports stable accuracy during outer-ring rotation.
The compact design helps reduce mechanism size while supporting high rigidity, preload and precision rotary performance.
Suitable for precision rotary mechanisms requiring accurate outer-ring rotation, compact installation and multi-directional load capacity.
Mounting & Operating Notes
Because the inner ring is split, keep both inner-ring sections correctly aligned and secure them uniformly with a sufficiently rigid shaft, clamping component or flange.
Mating surfaces should provide good flatness, concentricity and finish; avoid uneven clamping that may deform the rings.
Fits, tolerances, tightening sequence, preload, lubrication and operating clearance should be selected according to load, accuracy, speed and temperature conditions.
Typical Applications
High-precision rotary tables, robot joints and rotary units
Machine-tool indexing units and precision rotary axes
Semiconductor, measurement and automation equipment
Precision medical equipment, optical and inspection instruments
Series & Model Information
The HRE prefix identifies crossed roller bearings with a split inner ring and integral outer 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, accuracy requirement, reference mass and mounting conditions. The table below shows HRE10016 as a representative model only.
