PMI Introduction to Rolled Ballscrew  

The production of the  PMI  rolled ballscrews has adopted a manufacturing process and equipment unlike other manufacturers. Combining advanced skills and the Bad Düben digital electric screw thread rolling machine, we adhere to a strict quality control policy at every stage of production, from the selection of ballscrew material and rolled processing to induction hardening heat treatment and post production. We are committed to providing clients with products of the best quality.

 The combination of rolled ballscrews and ground nuts has replaced the traditional ACME screws and trapezoidal screws. This makes for a smoother operation while lowering friction and backlash. Moreover, the new technology has the advantage of faster production speed and lower prices.

Besides differences in the definition of lead deviation and geometric tolerance, rolled and ground ballscrews can both eliminate axial play by preloading. Please contact us for related technical information.

Features of the  PMI  Rolled Ballscrew

C7, C8, and C10 Screws have been Standardized: The  lead  accuracy  of  our  rolled  ballscrews  is  in accordance with JIS B1192 -1997, and our C7, C8, and C10 products have been standardized.

High Precision Rolled Nuts:The manufacturing process of rolled nuts is identical to that of ground nuts. Surface hardening treatment and  internal  thread  grinding  ensure  durability  and smoothness.

Lead Accuracy Up to Grade C5:Lead accuracy grade can be as good as JIS Grade C5
and C6. Please contact us if you have need for such high accuracy grades.

Nuts are Interchangeable:Without preload and within the maximum permissible axial play, different types of nuts can be used on the same screw.