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51 Series Custom & Special Bearings — Sizes & Specifications

16 models in the 51 series, 12.7–51 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)
5108TIMKEN—
5116TIMKEN—
5117TIMKEN—
5124TIMKEN—
5146TIMKEN—
5163TIMKEN—
5166TIMKEN—
5167TIMKEN—
5168TIMKEN—
5169TIMKEN—
5170TIMKEN—
5174TIMKEN—
5188TIMKEN—
5189TIMKEN—
5151SKF12.7—
51X65X7 CRWA1 RSKF51—

About the 51 series

51 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 Custom & Special Bearings series: 62 · 685 · 63 · 60 · SNV · K · BND · 697