B-108-OH Needle Roller Bearing, Full Complement Drawn Cup, Open, Oil Hole, Inch, 5/8" ID, 13/16" OD, 1/2" Width, 4500rpm Maximum Rotational Speed Drawn cup needle roller bearing for applications with high dynamic loads Drawn steel outer shell (cup) has a reduced cross-section for use in restricted spaces Full complement of rollers for greater load capacity than caged bearings Through-hardened, high-carbon chromium steel rollers for heat tolerance and durability under heavy loads Oil hole for applying lubrication in place