RB SERIES

RB Cylindrical O.D. Insert Bearing

Straight Bore, Cylindrical Outside Diameter. Catalogue-backed dimensions, exact series drawing and RFQ support from GBC.

Request a Quotesales@australia-drive.com

Product Overview

RB is the alternative to a spherical-OD insert when the surrounding component needs a straight cylindrical outside diameter. The key buying check is therefore the outer-ring seat, not just shaft bore.

The published drawing and dimensional table follow the GBC insert-bearing catalogue for this RB series. It is defined by set-screw style wide inner ring in the shared catalogue family, a cylindrical outside diameter, and the dimensional rows listed below. For broader bearing navigation, explore the Bearings range.

Dimensional Drawing

The drawing below is cropped directly from the supplied catalogue. Use its dimension letters with the table; do not scale the image to estimate dimensions.

Technical Parameters

Base metric rows and documented catalogue models are shown here. Inch-bore suffixes remain available where they appear in the catalogue; quote the complete suffix when an inch shaft is involved. Load ratings are catalogue values and should be checked together with duty, speed, lubrication and mounting conditions.

Selection and Housing Match

Match the shaft bore and the outer diameter D first. Then verify B and C against the available width. When converting from a spherical-OD unit, treat it as an engineering change rather than a direct swap.

Installation Notes

Measure the housing or cartridge bore before ordering. A cylindrical-OD insert does not provide the same housing self-alignment function as a spherical outer ring, so seat geometry and alignment deserve more attention during replacement.

For set-screw rows, the catalogue gives the following maximum tightening torques. Use the thread shown in the selected bearing row; a torque value belongs to the screw size, not simply to the bearing bore.

Catalogue Construction Notes

The catalogue describes insert bearings as single-row deep-groove ball bearings and shows dual-seal and triple-lip sealing arrangements within the product family. It also documents hardened inner-ring areas and an anti-rotation device used when a spherical insert is fitted with clearance in its housing. Confirm the exact suffix when a particular seal is required.

Typical Applications

This series is considered for special cartridge arrangements, conveyors and machinery where the outer-ring seat is cylindrical rather than spherical. Application fit still depends on shaft size, housing geometry, contamination, relubrication needs and the real radial/axial load pattern. For food-processing equipment, specify any material, lubricant or washdown requirement explicitly rather than assuming the standard insert meets a hygienic specification.

Ordering Information

Model codes should be ordered exactly as documented. The catalogue uses -G for relubricatable versions in applicable SB/SA families, C-prefix notation for cylindrical outside-diameter variants, 2RS where the double-rubber-seal designation is part of the model, and +H for UK adapter-sleeve combinations. Not every suffix applies to every series.

FAQ