Crossed-roller bearings are bearings for high-precision applications whose dimensions conform to ISO dimension series 18 as per DIN 616. Due to the X arrangement of the cylindrical rollers, these bearings can support axial forces from both directions as well as radial forces, tilting moment loads and any combination of loads by means of a single bearing position. As a result, designs involving two bearing positions can be reduced to a single bearing position. Crossed roller bearings are very rigid, have high running accuracy and are supplied with normal clearance, low clearance or preload. The bearing outer rings are easily fixed to the adjacent construction using clamping rings.
AUB designs and manufactures a wide range of crossed roller bearings that can accommodate radial, thrust and moment loads simultaneously. The rollers of these compact bearings cross at right angles between the inner and outer rings.
The choice of cross roller bearing is dependent on the design requirements of the equipment and and the specific application.
The high rigidity crossed roller bearing adopts a solid one-piece structure with high precision.
Standard crossed roller bearings have a two-piece outer ring that is bolted together to prevent separation during shipping and installation.
Crossed cylindrical roller bearings feature cylindrical rollers arranged at 90 degrees in V-shaped raceways separated by spacers. This unique structure enables the bearing to withstand axial loads, radial loads, and overturning moments.
RB Type: Basic type with the outer ring split into two pieces and the inner ring as a single piece, suitable for applications requiring high inner ring rotational precision.
RE Type: Similar to RB type in dimensions but with the outer ring as a single piece and the inner ring split into two pieces, ideal for applications requiring high outer ring rotational precision.
RA Type: Basic type with the outer ring split into two pieces and the inner ring as a single piece, suitable for applications requiring high inner ring rotational precision; a compact type with reduced thickness of both inner and outer rings.
RA-C Type: Similar to RA in dimensions, but with a notch structure in the outer ring providing high rigidity suitable for applications requiring outer ring rotation.
CRBH Type: Features integral inner and outer rings with an ultra-thin design and no mounting holes, requiring flanges and support seats for installation.
RU Type: Features integral inner and outer rings with mounting holes in both, suitable for applications involving rotation of both inner and outer rings.
SX Type: Integral inner ring and split outer ring with an ultra-thin design, no mounting holes, requiring flanges and support seats for installation, suitable for applications requiring inner ring rotation.
Customize Options for crossed cylindrical roller bearings include retainers or separators and full complement roller designs. Both retainer and separator types offer low friction coefficients for high-speed rotation and are available in sealed and open designs with synthetic rubber seals to prevent dust, dirt, and grease ingress.
These characteristics make crossed roller bearings highly suitable for industrial robot joints and rotating parts, rotary tables in machining centers, manipulator rotating parts, precision rotary worktables, medical machinery, and other equipment.
