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UD Series Ball Bearing Units — Sizes & Specifications

11 models in the UD series, 3–50 mm bore. Every row links to the full specification page and to the cross-reference page of that model.

ModelBrandBore d (mm)OD D (mm)Width B (mm)
UD204T1ANDGE20—
UD205T1ANDGE25—
UD206T1ANDGE30—
UD207T1ANDGE35—
UD208T1ANDGE40—
UD209T1ANDGE45—
UD210T1ANDGE50—
UD23ANDGE3104—
UD2/33x33ANDGE3310033—
UD209ANDGE458519Cross-ref →
UD210ANDGE509020—

About the UD series

UD series bearings follow the ISO dimension plan for this family, so a given number is dimensionally interchangeable between brands - see the cross-reference to confirm. Choose the suffix for your duty: shields for dry, clean positions, contact seals for wet or dusty ones, and a larger clearance class where the fit or temperature demands it.

Other Ball Bearing Units series: E · NAU · LSE · UC · SNV · MSE · SD · SNT