Ball Screw Products

Ball Screw Products

Ball Screws for a Variety of Applications

Ball screws assemblies offer an efficient means of converting rotary motion to linear motion. A ball screw is an improvement over an acme screw just as an antifriction ball bearing is an improvement over a plain bushing. Precision Ball screw assemblies have a number of bearing balls that transfer the load between the nut and screw. The thread form in which the bearing balls ride is an ogival shape formed from two arcs of the same radius with offset centers. This form is also referred to as a gothic arch.

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Metric   Inch   Legacy  

Metric

Precision Metric Ball Screws - PMBS

The PMBS™ product line offers linear lead accuracy classes of T10, T7, T5, and T3, which comply with the ISO 3408 ball screw standard. All ball nuts are precision ground and engineered to operate with precision rolled ball screws or precision ground (T3) ball screws.

Miniature Metric Ball Screws

Inch

Standard Accuracy

SRT - Ball Screws will not deviate from nominal lead by more than ±.004 inch/foot on screws through 2 1/2" diameter and ±.008 in/ft on screws 3" and over.

Precision Accuracy

XPR - Ball Screws will not deviate from nominal lead by more than ±.001 inch/foot.
SGT - Ball Screws will not deviate from nominal lead by more than ±.0005 inch/foot.

Legacy

Standard Accuracy

MRT - Metric Ball Screws will not deviate from nominal lead by more than 100µm / 300mm on screws through 63mm.

Precision Accuracy

PMT - Precision Metric Ball Screws will not deviate from nominal lead by more than 25µm / 300mm.