BrandKoyo (JTEKT) Item Number6210 Koyo (JTEKT) CategoryDeep Groove Ball Bearings Single Row Weight and Dimensions Inner (d) MM50 Outer (D) MM90 Width (B) MM20 Inner (d) Inch1.9685 Outer (D) Inch3.5433 Width (B) Inch0.7874 Weight (kg)0.463 Product Properties BoreC - Cylindrical Bore SealNo Seal Cage TypeS - Steel or Standard Cage External ModificationNo External Modification Radial Internal PlayCn Normal Internal Play PrecisionStandard Precision LubricationStandard Lubrication Heat StabilizationNo Heat Stabilization - Temperatures up to 120 °C Special TreatmentNo Special Treatment