Bi-directional Ball Screw

The ball screw drive is an assembly that converts rotary motion to linear motion (or vice versa). 

It consists of a ball screw and a ball nut packaged as an assembly with recirculating balls. 

The interface between the ball screw and the nut is made by balls which roll in matching ball forms. With rolling elements, the ball screw drive has a low friction coefficient (typically up to 98%). 

The forces transmitted are distributed over a large number of balls, giving a low relative load per ball comparatively.

Miniature Ground Ball Screws
• 3-16 mm diameter
• All sizes available in three nut styles: flanged, threaded, and cylindrical
• Nut body (pilot) diameters as small as 7 mm

Miniature Rolled Ball Screws
• 8-16 mm diameter
• Same nut quality and style selection as our ground screws!
• Choose fully assembled or stock lengths

Large Ground Ball Screws
• 16-100 mm diameter
• Flanged nut
• UltraThrust line delivers load capacity up to 1400 kN (150 tons)!

Large Rolled Ball Screws
• 16-80 mm diameter
• Available nut styles: flanged, threaded, and multiliner
• Choose fully assembled or stock lengths