The main difference between worm gear and planetary gear is their transmission efficiency.
Planetary Gear:
The planetary gear drive is guided by a large intermediate gear; its sides mesh with multiple smaller gears, similar to planets orbiting the sun. This gear drive provides the system with the option of locking and unlocking certain gears so that part of the system moves while other parts remain stationary.
Worm Gear
The worm wheel is a worm wheel located above the worm and meshing with the worm. When the worm wheel rotates, the worm rotates at an angle of 90 degrees. This planetary gear reducer allows the speed of the system to be reduced through the conversion of motion from the worm gear to the worm.
Worm gear transmission efficiency is low. This enables the winch to brake automatically even under heavy loads. Worm gears have the greatest deceleration, carrying capacity and slower linear speed. Planetary gear winches are more efficient, which means that they cannot hold the load and have a tendency to loosen under load, but have a higher linear speed. Because of the faster production line speed and lower cost, planetary gear drive systems are generally more popular.
You always need to keep the load holding capacity in mind and make sure to choose the correct winch for your application.
Industrial operators using trailers and wreckers should consider using hydraulic worm gears. Self-recovery applications are the best match for electric planetary gears. There are exceptions to these guidelines. For example, an industrial winch owner with a limited budget or without a hydraulic system will find that an electric worm gear is sufficient. Certain industrial applications are compatible with electric planetary gears, especially if the winch is used regularly throughout the month.
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