Introduction to the differences between planetary roller screws and ball screws

Some customers may ask, what type of ball screw can the nut and screw be separated from and can be screwed on during use?

In fact, there is no such ball screw, because after the nut and screw are separated, the balls fall out and the screw can no longer be used.

However, a trapezoidal screw is okay, because there are no balls, and the nut can be unscrewed and then screwed back on without any impact.

There is also a screw that is more precise than the ball screw, which is the planetary ball screw. The planetary roller screw is a mechanism that converts rotational motion into linear motion. The rolling element between the nut and the screw is a threaded roller. The numerous contact lines make the planetary roller screw have a very strong load-bearing capacity.

Planetary roller screws are classified into: roller non-circulating type (RGT series and RGTB series), roller circulating type (RGTR series).

A planetary roller screw is a mechanical device that converts rotational motion into linear motion. The planetary roller screw transmission method is unique. Around the main threaded screw, 6-12 threaded roller screws are arranged on the planet, which converts the rotational motion of the motor into the linear motion of the screw cup or nut. Planetary screws can withstand heavy loads for thousands of man-hours in extremely harsh environments, making planetary screws an ideal choice for applications requiring continuous duty.

A planetary roller screw is a rolling system that includes a threaded screw and a number of nuts with rollers at both ends. The rollers run in orbit driven by synchronized gears at both ends of the nut. Compared with ball screw red, it has higher load-bearing capacity and accuracy, but the cost is expensive, 2-10 times that of ball screw. Generally, enterprises will not choose or need to use this kind of roller screw, while planetary ball screw Screws are usually used in high-precision industries.

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