There are several common design variations and configurations of Worm Gear Speed Reducer. Some of the most common include:

Single stage reduction: This configuration consists of a pair of worm and gear, with the input connected to the worm and the output connected to the gear. It provides a suitable reduction ratio and is typically used in applications requiring a compact design.

Double reduction: This configuration consists of two sets of worms and gears, with the input connected to the first set of worms and the output connected to the second set of gears. It provides a higher reduction ratio than a single reduction and is used when higher torque output is required.

Right Angle: In this configuration, the input and output shafts are placed at right angles to each other. This is typically used in applications where the input and output need to be at right angles to each other.

Hollow Shaft: The center of a hollow shaft worm reducer is hollow through which the input or output shaft can pass. This configuration is often used when space is limited or when the gear reducer needs to be integrated into a larger system.

Foot Mount: This design variant has a base with mounting holes for easy attachment to a surface or frame. Provides stability and is easy to install.

Flange Mounting: In this configuration, the worm gear reducer has a flange on the housing that allows direct connection to the driven component. It is typically used when a reducer needs to be connected directly to a motor or other machine.

UNIVERSAL MOUNTING: The universal mounting design increases the versatility of mounting options. They often include multiple mounting holes or patterns to allow the reducer to be mounted in different orientations or configurations.

These are just some of the common design variations and configurations of worm gear reducers. The choice depends on application requirements such as torque, speed, space constraints and mounting options.