Heavy duty needle roller bearings consists of a machined and ground channel-shaped outer ring with a complement of needle rollers and a cage. The high-strength cage retains and guides the rollers. An optional lubrication groove and hole in the outer ring facilitates re-lubrication. These bearings can be used with or without machined and ground inner ring, depending on the suitability of the shaft as a raceway surface. Koyo Needle Roller Bearing, Heavy Duty, Series: HJ Inch Series, 1-5/8 in Bore, 2-3/16 in OD, 1-1/4 in Width, Double Seal Closure, 10900 lbf Dynamic/17200 lbf Static Load, 2400 RPM Maximum, -25 to 225 °F