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The characteristics of the planetary roller screw：
The manner of the transmission force of the planetary roller screw is different, and around the main threaded screw, a planetary arrangement 6-8 threaded roller screw is installed, so that the rotational movement of the motor is converted to the screw or nutlinear motion. The planetary roller screw is a to convert rotary motion into linear movement of a mechanical device. With trapezoidal screw, ball screw drive is a bit similar, but different point: the planetary screw be able to withstand extremely difficult working environment overloaded thousands of hours, so that makes planetary screw requiring continuous working ideal for apply occasions.
Performance comparison of planetary roller screw and hydraulic cylinder / cylinder：
Kind of need a higher carrying capacity, or high-speed applications, compared to the hydraulic cylinder, cylinder, planetary screw electric putter gave customers the ideal choice. EXLAR planetary screw configuration simple single control system, and it has brought unparalleled superiority. Does not require complex support system, such as valves, pumps, filters, and sensors. EXLAR electric cylinder, small size, long working life, day-to-day maintenance-there is no hydraulic cylinder liquid leakage, noise significantly reduced。Performance comparison of the planetary roller screw and ball screw：
Operational life：
Usually the lifetime of the screw is calculated in accordance with the stroke of a planetary roller screw and a ball screw life curve with reference to the accompanying diagrams, of 30mm diameter and 5mm lead screw, planetary roller screw, in a load of 1 ton lifethe ball screw 15 times.Ultra-high speed：
Conventional ball screw in order to avoid mutual collisions between the balls, and thus does not exceed the input speed 2000rpm; planetary roller screw planetary screw cloth fixed around the main screw, it can be run in the rotational speed of 5000rpm or more, the maximum speed up to 2000mm / s.| Feature： | ||
| ·high axial load | ·super-long lifetime | ·high transmitting efficiency |
| ·without backlash | ·high stiffness> | ·Precision up to 1um/300mm |
| ·High input speed（RV，BRV） | ·big diameter small lead（RVR） | |
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