Machine Design

Mini ball screws

Miniature ball screws use internal ball return and reportedly provide high efficiency and repeatability, precise positioning, and smooth, reliable motion. Diameters start at 4 mm, with a 1-mm lead. Six and 8-mm diameters are also available. Manufactured as both rolled and ground units, the ball screws come in a range of precision classes. Nylon wipers protect against contamination, and ends can be machined to customer specifications.

Thomson Industries Inc., 2 Channel Dr., Port Washington, NY 11050, (800) 554-8466,

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