Shell type Needle Roller bearings are light-weight but are rates for heavy loads. They employ a Shell type outer ring made of thin special-steel plate which is accurately drawn, carburized and quenched , thus providing the minimum sectional height of the needle roller bearings The caged type has a structure in which the needle rollers are accurately guided by the cage and thrust rings. It is useful for applications at high-speed rotations. Available in Sizes From Bore size: 3 mm to 60 mm Inches Bore size: 3.969 (5/32") to 69.85 (2 3/4") Series mm: TLA (HK),TA (HMK) , YT (FJ) (full complement) Inches: BA (SCE) , BHA (SCH), YB (full complement)