Product Specifications Brand: Koyo (JTEKT) Item Number: B-138 Category: Needle Roller and Cage Assembly (Drawn Cup Needle Roller Bearing) Seal / Closure: Open (No Seal) Series: B (Standard Series, Full Complement) Lubrication Hole: No Hole Standards Met: ANSI/ABMA 18.2, ASTM F2162 Max Operating Temperature: +250°F Max RPM: 5200 rpm UPC: 605790206665 Dimensions & Weight Bore (Inner Diameter): 20.64 mm / 0.8125 in (13/16 in) Outside Diameter: 26.99 mm / 1.0625 in (1-1/16 in) Width: 12.7 mm / 0.5000 in (1/2 in) Weight: 0.018 kg / 0.04 lbs Product Description Description: Drawn Cup Needle Roller Bearing – Open Ends, Full Complement Notes: Full complement needle rollers provide high load capacity in a compact envelope No separate inner/outer ring; shaft and housing typically serve as raceways Unsealed, open-end design Package Includes: One (01) KOYO Bearing B138