Precision Cross Roller Bearing

Technical Guide

RB, RA, RU and RE Cross Roller Bearing Comparison

Compare ring construction, mounting features and the information needed before selecting an RB, RA, RU or RE series bearing.

Start with ring structure

The ring construction determines how the bearing is supported and which member is intended to rotate. It should be confirmed from the series drawing, not inferred from the model number alone.

Compare mounting features

RU-style bearings commonly integrate mounting holes, while other series may rely on clamping, shoulders or separate mounting parts. Confirm hole pattern, thread, tightening method and available installation space before replacement selection.

Do not treat dimensions as full interchangeability

Bore, outside diameter and width are only the first screen. Shoulder dimensions, mounting geometry, accuracy, clearance, preload and sealing requirements must also match the machine design.

What to send for technical confirmation

Send the original model, a drawing or mounting photograph, key dimensions, load direction, speed, accuracy target and quantity. This enables a series and installation review before quotation.

Related RAU Models

RAU Series RAU1505 Cross Roller Bearing Small-diameter thin type or RA-compatible type RAU Series RAU4005 Cross Roller Bearing Small-diameter thin type or RA-compatible type RAU Series RAU5008 Cross Roller Bearing Small-diameter thin type or RA-compatible type RAU Series RAU6008 Cross Roller Bearing Small-diameter thin type or RA-compatible type RAU Series RAU7008 Cross Roller Bearing Small-diameter thin type or RA-compatible type RAU Series RAU8008 Cross Roller Bearing Small-diameter thin type or RA-compatible type RAU Series RAU9008 Cross Roller Bearing Small-diameter thin type or RA-compatible type RAU Series RAU10008 Cross Roller Bearing Small-diameter thin type or RA-compatible type RAU Series RAU15008 Cross Roller Bearing Small-diameter thin type or RA-compatible type RAU Series RAU16013 Cross Roller Bearing Small-diameter thin type or RA-compatible type RAU Series RAU20013 Cross Roller Bearing Small-diameter thin type or RA-compatible type

Technical Guides

Cross Roller Bearing Installation GuideInstallation checks for shaft and housing shoulders, tightening sequence, fit and rotational accuracy. Cross Roller Bearing Clearance and PreloadHow clearance and preload affect rigidity, torque, heat and service life. Cross Roller Bearing Accuracy SelectionSelection notes for running accuracy, mounting accuracy, rigidity and application requirements. RB, RA, RU and RE Cross Roller Bearing ComparisonCompare ring construction, mounting features and the information needed before selecting an RB, RA, RU or RE series bearing. Cross Roller Bearing ds and Dh Shoulder Dimension GuideA practical guide to checking shaft and housing shoulder dimensions against the bearing drawing before machining or replacement selection. Cross Roller Bearing Load and Moment Selection GuideSelection checkpoints for combined radial, axial and moment loads before choosing a cross roller bearing model.

Request a Quote

Send the bearing model, quantity, accuracy class and drawing if available. We will match RU, RB, RA, RE, CRBH, CRBF and equivalent crossed roller bearing models.

Email qing.shao@priusbearings.com Phone 18568992278
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