The rated power is a parameter at an environmental temperature of 20°C and a working duration of 20% per hour.

2. Total efficiency is for parameters under oil-lubrication conditions.

3. Allowable torque, power, and RPM vary with different load levels, as well as power at different startup duration rates.

4. For elevators equipped with dual guide sleeves, the screw shaft is capable of withstanding not only axial forces but also certain lateral forces.

The worm shaft extension is designed to withstand certain radial forces and is capable of accommodating gears, sprockets, or pulleys.

6. Worm screw lifting machines generally can self-lock in a stationary state.