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285 Series Tapered Roller Bearings — Sizes & Specifications

45 models in the 285 series, 49.987–285.75 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)
28520TIMKEN—
28521TIMKEN—
28521-BTIMKEN—
285226TIMKEN—
285228DTIMKEN—
285228DCTIMKEN—
28523TIMKEN—
28526TIMKEN—
28527RBTIMKEN—
28576TIMKEN—
28576 - 28520TIMKEN—
28576 - 28521TIMKEN—
28576 - 28523TIMKEN—
28576 - 28526TIMKEN—
28576 - 28527RBTIMKEN—
28579TIMKEN—
28579 - 28520TIMKENCross-ref →
28579 - 28521TIMKENCross-ref →
28579 - 28523TIMKEN—
28579 - 28527RBTIMKEN—
28580TIMKEN—
28580 - 28521-BTIMKEN—
28580 - 28527RBTIMKEN—
28580ATIMKEN—
28580A - 28520TIMKEN—
28580A - 28521TIMKEN—
28580A - 28523TIMKEN—
28580A - 28527RBTIMKEN—
28584TIMKEN—
28584 - 28521-BTIMKEN—
28584 - 28527RBTIMKEN—
28579/28521ANDGE49.98792.075Cross-ref →
28579/28521BANDGE49.98792.075—
28579/28520TIMKEN49.98789.9825.4Cross-ref →
28579/28521TIMKEN49.98792.07525.4Cross-ref →
28580/28520ANDGE50.889.9824.75—
28580/28521-BTIMKEN50.891.94825.4—
28580/28521ANDGE50.892.07524.608Cross-ref →
28580A/28521ANDGE50.892.075—
28584/28521-BTIMKEN52.38891.94825.4—
28584/28520ANDGE52.38889.98—
28584/25821ANDGE52.38892.07525.4Cross-ref →
28584/28521ANDGE52.38892.07524.608Cross-ref →
28584/28521BANDGE52.38892.075—
285TQOS380-1ANDGE285.75380.898244.475—

About the 285 series

285 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 Tapered Roller Bearings series: EE · HM · LM · M · 320 · BT · 322 · L