In ball screws with rotating nuts, the shaft remains stationary while the nut itself rotates around it. This reversed working principle unlocks design advantages wherever high speeds, long axes, or demanding rigidity requirements come together.

Key advantages at a glance:

• Significantly higher speeds: Because the shaft itself does not rotate, the resonance issues typical of long, fast-spinning shafts are largely eliminated, keeping high traverse speeds achievable even over long axis lengths.
• Higher axial and torsional rigidity: Forces and moments can be transferred into the surrounding structure at both ends of the stationary shaft, noticeably increasing rigidity, especially with a high lead-to-diameter ratio.
• Reduced heat generation: Because the tensioning forces used to pre-load the shaft don't need to pass through the bearings, power loss drops significantly, and the stationary shaft is also easier to liquid-cool.

Steinmeyer rotating nuts feature a direct mounting interface for angular contact ball bearings, along with a connection thread for securing the bearing with a lock nut. The flange, ground on both sides and fitted with threaded bolt holes, makes it easy to mount a pulley opposite the bearing.

The list below provides an overview of our standard versions for ball screws with connection thread nuts. Technical specifications and dimensional drawings can be accessed directly via the linked product reference numbers. 

Custom versions tailored to your specific requirements are available upon request. Please contact our experts here!