NSK WBK25DFD Heavy Duty Ball Screw Support Unit

NSK WBK25DFD Heavy Duty Ball Screw Support Unit is a fixed-end bearing assembly from NSK’s WBK series that mounts directly to standard machined ball screws to deliver rigid, high-load support for precision linear motion. This heavy‑duty DF‑type unit (WBK25DFD) is designed for a 25 mm ball screw shaft, featuring a 25 mm bearing journal and integrated locknut hardware, and it is offered in the 31H end-cap configuration (WBK25DFD‑31H). Commonly used to support CNC machine axes, automation lines, and robotic cells, it provides stable alignment and stiffness for demanding applications and accepts the M25 x 1.5 locknut thread on the screw end.