THK BNS4040+700LC5 Rotary Nut Ball Screw

The THK BNS4040+700LC5 is a heavy-load rotary nut ball screw from THK’s BNS series, designed to provide simultaneous linear and rotary motion with high rigidity and durability. By integrating a ball screw and ball spline structure within a single unit, it enables torque transmission while maintaining smooth axial movement, eliminating the need for separate linear and rotary components.

With a 40mm screw shaft diameter, 40mm lead, and 700mm overall shaft length, the BNS4040 is well suited for demanding industrial automation, indexing mechanisms, and high-load positioning applications requiring synchronized rotation and linear travel without backlash. The C5 accuracy grade ensures reliable and repeatable positioning performance in precision industrial environments.