- What preloading methods are available for ball screws?
- The preloading methods are as follows:
1. Fixed-point preloading
-Double-nut preloading (models SBKN, SDAN-V, BNFN-V, BNFN, DKN, and BLW)
A spacer is inserted between two nuts to provide a preload.
-Offset preloading (models SBK, SBN-V, BIF-V, BIF, DIK, and DIR)
More compact than the double-nut method, offset preloading provides a preload by changing the groove pitch of the nut without using a spacer.
2. Constant-pressure preloading (Model JPF)
With this method, a spring structure is installed near the middle of the nut, providing a preload by changing the groove pitch.
For a breakdown of ball screw types by preloading method, click here.