by Express Ballscrew Repair

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Quality & Guarantee                Call: 800-711-2153

When rebuilding a ball screw, Express Ball Screw Repair Service
uses only the best quality components to ensure reliable positioning accuracy and long life.

Screw and ball nut raceways are ground, lapped, and polished to meet or exceed original specifications. If the screw raceways are in good condition, they are lapped and polished only, removing just enough of the surface to remove wear and damage. In any case, the least material as possible is ground or lapped from critical surfaces.

Ball size and material are carefully chosen to provide the best preload and wear resistance for the application.

All bearing surfaces have a super fine finish and recirculating channels in the ball nut are individually mated to aid smooth and quiet operation.

A word about Ball Size and Quality

Correct ball size and quality is critical to achieve superior positioning accuracy, repeatability, and long ball screw life.

If the ball size is incorrect a ball screw will never achieve its designed positioning potential. If the material hardness, spherical accuracy, or surface finish is incorrect the wear characteristics of the ball screw will be seriously compromised.

Quality precision ballscrews feature consistent ball to raceway load over every revolution of each load ball for the entire length of travel. To achieve this goal it is not only necessary to accurately machine ballscrew parts, but to provide a surface finish suitable for the ball to run along without abrasion. Finish lapping and polishing the raceway of the screw and recirculating ball nut is useless if the balls running along them do not at least match the accuracy and surface finish. Because a load ball is in constant contact with the raceway but traveling along the track, the wear to the balls exceed wear to the raceway. For a ball screw to perform flawlessly over a period of time the quality and accuracy of the balls are paramount to a high precision ball screw.

Unlike many ball screw reconditioning companies, Express Ball Screw Repair Co. uses balls of equal or better quality than were installed by the original ball screw manufacturer. Many of our competitors are satisfied to install the minimum quality Grade 25 chrome steel balls that are cheaper and more easily obtained in multiple sizes than high quality balls.

Express Ballscrew repair predominantly uses Grade 10 for balls 0.1 inch to 0.375 inch in diameter, Grade 5 for balls less than 0.1 inch, and only use Grade 25 for balls over 0.375 inch diameter because this grade is only accurate enough for the larger size balls. To recondition all types and sizes of ball screw correctly it is necessary to stock almost every size of ball in at least 0.000050 inch (50 millionths) increments. To stock hundreds of ball sizes of predominantly Grade 10 quality is beyond all but the most reputable and committed companies.

The balls that go into your ball screw help determine the quality of the finished product so be satisfied that the balls being installed are the correct grade.

Express Ball Screw Repair
offers a ball screw repair service that is second to none in quality, price and turn-around and every unit carries a no-nonsense guarantee that equals or exceeds the original manufacturer's guarantee, plus we will help you solve your ball screw related problems even if the ball screw is not at fault.

We value your custom and take your satisfaction seriously.

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Express Ball Screw Repair

112 Price Cir.
Ringgold, GA. 30736

Phone: (423) 559-2153
Fax:    (423) 559-1044

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