INA NKX-40-Z-A Needle Roller Bearing With Inner Ring

INA NKX-40-Z-A is a combined needle roller bearing with inner ring from the NKX family, designed to provide high radial stiffness in a compact form. It features a 40 mm bore and a compact 52 mm outer diameter with a 32 mm width, enabling strong radial support within tight envelopes. The NKX series integrates a radial needle roller component with an axial ball bearing, delivering both radial load capacity and axial location in a single unit, which simplifies mounting on shafts and in housings. The “Z” designation indicates a shielded configuration that helps protect the bearing from contaminants while helping retain lubrication. This bearing is suitable for applications requiring precise shaft positioning and rigidity in environments with limited space, such as compact gear drives, automation actuators, and other machinery where reliable combined radial and axial guidance is beneficial. As part of INA, a Schaeffler brand, NKX-40-Z-A is intended for single-direction axial support and dependable performance in demanding, space-constrained assemblies.