BRAND: KBS ID: 30BD5523 /30BD40 DESCRIPTION CategoryAngular Contact Ball Bearing Double Row Weight and Dimensions Inner (d) MM30 Outer (D) MM55 Width (B) MM23 Weight (kg)0.185 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 Split Inner ring / Outer ringStandard Package Includes: ONE (1) KBS Bearing 30BD40