For the difference of rock and soil strength on the tunneling face, curved tunneling, and the top-heavy structure of the main machine forming the complex geological structure, the adoption of uniform ...

Thrust bearings support axial loads on rotating shafts. Designs range from simple, coin-sized flat washers in household appliances to sophisticated assemblies several feet in diameter for ...

A new precision drive from Amacoil/Uhing is a Model RG rolling ring linear drive with a motion controller for precise linear-motion applications. Depending on the size of the drive nut, the drive ...