Koyo EE5SZZ C3 XM Miniature Deep Groove Ball Bearing ( 0.63 in, 15.88 mm Bore )
INTERNAL CLEARANCE C3. BORE TYPE Round. BEARING MATERIAL Steel. FILLET RADIUS 0.05 in, 1.2 mm. RADIAL INTERNAL CLEARANCE C3. BEARING TYPE Deep Groove. O.D. 1.38 in, 34.93 mm. BALL MATERIAL Steel.