Currently, the following models of solar screw jacks that are proven to withstand harsh conditions in the solar industry.
1. BALL Screw Jack: High accuracy, high efficiency, high performance, high duty cycle, low backlash, long service life, and uniform lifting speed. They are NOT self-locking so a brake motor or external locking device needs to be included in the drive system.
2. MACHINE Screw Jack: Low cost, heavy duty, self-locking, positive mechanical action, precise positioning, and uniform lifting speeds.