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318 Series Tapered Roller Bearings — Sizes & Specifications

8 models in the 318 series, 31.75–850 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)
31885/3120ANDGE31.7572.626—
31856X2ANDGE28035036—
31856X2/96ANDGE28035036—
318/530X3ANDGE530670100—
318/850ANDGE850103090—
318/850X2ANDGE850103090Cross-ref →
318/850X2/P5ANDGE850103090Cross-ref →
318/850X2/P6ANDGE850103080Cross-ref →

About the 318 series

318 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