Reducer is used to increase gear torque and control output speed on machines and motors. The type of reducer is different based on the purpose, which includes applications such as elevator systems or power transmission systems.
In industrial applications, worm gear reducers and helical gear reducers are widely used. Often, we are asked which type of reducer is suitable for a particular application scenario. Therefore, we have created this guide to help everyone understand the ideal use scenario of each type of reducer.
Worm gear reducer
Worm gear reducers usually consist of a screw-called a worm-and a much larger interlocking gear. When torque is applied to the worm, the gear will rotate. This allows the operator to determine the speed of the gear rotation.
Because the worm gear usually only works in one direction-the worm can rotate the gear, but the gear cannot rotate backwards and drive the worm-when the operation stops, this option provides an automatic locking mechanism.
application:
Worm gear reducers can usually be found in the following scenarios:
Conveyor system
elevator
package
Small generator
Lifting/towing (crane, winch, hoist)
Blender
metal processing
In order to meet the specific needs of speed reducers, cast iron single-stage and double-stage worm reducers are used:
Single-stage deceleration:
For smaller applications, this type of worm gear can be found at multiple speeds, ranging from 5:1 to 100:1.
Two-stage deceleration:
For larger gear reductions, the reduction ratio of worm gears ranges from 75:1 to 3600:1.
Helical gear reducer
Unlike worm gears, helical gears can move in two directions. The typical cut is from 15 degrees to 30 degrees. The helical gear gets this name because the intersection of the two gears creates a spiral.
Helical gears are known for their smooth and quiet operation. Helical gears use their own unique design to generate a considerable thrust (the total thrust is based on the angle of the gear teeth). Helical gear reducers are ideal for high-load applications. Because they typically contain more teeth to make contact and distribute the load stably.
application
Compared to worm gear types, helical gear reducers have a narrower application range, and they are mainly used in the field of automation due to their quiet nature and high thrust capability. Applications of helical gear reducers include:
Conveyor system
package
Lifting/pushing (crane, elevator)
Stirrer
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