NKS40 Needle Roller Bearing 40x55x22mm - Machined TypeNKS40 Needle Roller Bearing No Inner Ring Machined Type 40mm x 55mm x 22mm Metric Size The NKS40 is a precision machined needle roller bearing without an inner ring, designed for applications where the shaft itself serves as the raceway. Ideal for compact, high load setups in gearboxes, transmissions, and industrial machinery. Type: Needle roller bearing (no inner ring) Inner diameter (F): 40mm Outer diameter (D): 55mm Width (B): 22mm Style: Machined