Bearing Steel Rolled Thread Ball Screw
A ball screw is a mechanical linear actuator that translates rotational motion to linear motion with little friction. A threaded shaft provides a helical raceway for ball bearings which act as a precision screw. As well as being able to apply or withstand high thrust loads, they can do so with minimum internal friction. They are made to close tolerances and are therefore suitable for use in situations in which high precision is necessary. The ball assembly acts as the nut while the threaded shaft is the screw. In contrast to conventional leadscrews, ballscrews tend to be rather bulky, due to the need to have a mechanism to re-circulate the balls.
ball screw specifications:
Ball screw specifications | |||
Shaft dia×Lead/direction of tum | 8×1/Right | ||
Preload/Ball recirculation | P preload/Deflector | ||
Ball dia / Ball circle dia | 0.800/8.2 | ||
Effective turns of balls | 1×3 | ||
Accuracy grade / Axial play | C3/Z | C3/T | |
Basic load rating N{kgf} | Dynamic Ca | 670{70} | 670{70} |
Static Coa | 1290 {130} | 1290 {130} | |
Axial play | 0 | 0.005 or less | |
Dynamic friction torque N-cm {Kgf-cm} | ~1.8 {~0.18} | ~0.5 {~0.05} | |
Spacer ball | None | ||
Factory packed grease | NSK grease PS2 | ||
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