UC SERIES

UC Insert Ball Bearing

Set Screw Type. Catalogue-backed dimensions, exact series drawing and RFQ support from GBC.

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Product Overview

Choose UC when a straight shaft, simple set-screw mounting and a broad catalogue size range are the priority. The 200 and 300 dimensional series cover many common machinery shaft sizes.

The published drawing and dimensional table follow the GBC insert-bearing catalogue for this UC series. It is defined by two set screws on the wide inner ring, a spherical outer ring, 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

Start with shaft diameter, then check D, B and C against the existing housing and available axial space. For replacement work, photograph the old bearing marking and measure the shaft before choosing an inch-suffix variant.

Installation Notes

Seat the insert in the matching spherical housing, position the shaft, then tighten the two set screws evenly. The catalogue places the screws 120 degrees apart. Use the listed thread size to select the tightening torque rather than tightening by feel.

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 agricultural machinery, construction equipment, textile machines, food-processing conveyors and general conveying equipment. 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.

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