RADIAL BALL BEARING, BEARING INDUSTRY NUMBER R4A, BORE DIAMETER 1/4 IN, CLOSURE DOUBLE SHIELDED, OUTER RING WIDTH 0.281 IN, OUTSIDE DIAMETER 3/4 IN, RING MATERIAL ALLOY STEEL, SYSTEM OF MEASUREMENT INCH, CAGE MATERIAL STEEL, ABEC RATING 1, APPLICATION RADIAL AND THRUST LOAD APPLICATION, BALL MATERIAL ALLOY STEEL, BORE DIAMETER TOLERANCE +0/-10 MICRON, DYNAMIC RADIAL LOAD CAPACITY 526 LBF, INCLUDES RETAINING RING NO, LUBRICANT MATERIAL GREASE