THK BNS Series Precision Ball Screw/Spline

The THK BNS Series is a heavy load type precision ball screw and spline built for linear-rotary motion. It features a large lead, which supports efficient motion conversion, and it also supports preload for improved rigidity and positioning accuracy.

This series uses a rotary nut design along with a rotary ball spline, giving it strong versatility for applications that need both precise linear positioning and rotary motion in a single unit.

The BNS Series has a DN value of 70,000 and is available in screw shaft diameters of 16mm, 20mm, 25mm, 32mm, 40mm, and 50mm.