PMI crossed roller bearings - precision in all areas
Properties of crossed roller bearings
PMI manufactures a variety of crossed roller bearings that can simultaneously support radial, axial and moment loads. These compact bearings have rollers that cross at right angles between the inner and outer rings. This design can reduce the necessary installation height of the bearing, which would otherwise be required, and achieve high rigidity and excellent load carrying capacity. Currently, there are standard type CRB, mounting hole type CRBF, robot installation type CRBR and customization type CRBX to choose from.
Applications of crossed roller bearings
They are suitable for supporting the rotating parts of machine tools, industrial robots, measuring instruments and IC production.
Features:
High accuracy
PMI offers precision crossed roller bearings in accuracy classes P2, P4, P5, P6 and P0 to meet customers' requirements for precision equipment. The bearings tested by PMI are classified according to the accuracy of the ISO standard.
High rigidity, high load capacity
The rollers cross at right angles between the inner and outer rings, and the contact area of the roller and groove is larger compared to ball bearings. This contributes to miniaturization and an increase in load capacity and rigidity.
Space-saving
The combination of conventional ball bearings requires around 1.5 to 2 timesmore space than crossed roller bearings. This enables space savings and miniaturization.
Wide range of specifications
Bore diameters from 20 mm to 160 mm are available to choose from.
Cross roller bearing types
- Standard type - CRBC/CRBB/CRBH: Depending on the application, you can select the type that matches the external or internal design to ensure high rotational accuracy.
- Mounting hole type - CRBF/CRBE: Mounting holes for direct attachment to the inner and outer ring facilitate the production of smaller and lighter devices.
- Robot installation type - CRBR: Suitable for Harmonic Drive CSG(CSF) series and multi-axis robots.
- Hollow rotation type - CRBG: Easy installation, suitable for rotating positions with high precision and compact structure.
- Adaptation type - CRBX: Reduces the space required by around 1.5 to 2 timescompared to the combination of angle bearings.