Dear Mr. Do,

High-precision processes and precision applications often require ball screws with an accuracy class of P3 and there is a common misconception among mechanical design engineers that this accuracy can only be achieved with ground-thread screws.

Thomson Neff Industries in Germany offers rolled ball screws with a lead accuracy class of P3 (12 µm / 300 mm), manufactured using its proprietary rolling process called Precision Screw Forming Technology (PSF). This process provides the same precision standards as ground screws but costs up to 70% less.