Slew Drive vs Worm Gear Drive
Slew drives are well known for being able to hold high loads while providing high rotational torque. Worm gear drives are commonly used in applications that require high reduction and torque ratios in a single stage design. Both are fundamentally based on the same worm drive mechanism principles. Slew drives make use of worm gear machinery.
When you are requiring a gear drive for an application there are benefits to using either a slew or a worm gear drive option.
What is worm technology?
Worm technology is based on a worm screw meshing with a worm wheel to transmit motion and torque. The screw resembles a helical gear and engages with the teeth of the wheel, creating a high reduction ratio in a compact space. Worm drives are used when a high reduction ratio and self-locking capability are required.
What is slew drive technology?
Slew drive technology builds upon the principles of worm drives but integrates a fully enclosed housing and additional features for enhanced load bearing and rotational capabilities. Slew drives combine a worm gear mechanism with a turntable bearing, allowing them to manage high axial, radial, and moment loads while maintaining smooth motion.
What are the advantages of worm gear drives?
Worm gear drives offer several advantages that make them a popular choice for various applications including:
- High reduction ratios in a single stage design, reducing the need for complex multi stage gear trains
- Self-locking capabilities, preventing back driving and enhancing safety in certain applications
- Smooth and quiet operation due to the sliding contact between the worm and wheel
- Compact design that can fit into tight spaces while delivering high torque output
What are the advantages of slew drives?
Slew drives provide additional benefits beyond those of standard worm gear drives. These advantages include:
- Ability to handle high axial, radial, and moment loads, making them ideal for heavy duty applications
- Enhanced torque transmission and load distribution due to the integration of a turntable bearing
- High durability and longevity due to their enclosed design that protects against environmental contaminants
- Simplified installation and maintenance, as slew drives come in pre-assembled units
What applications use worm gear drives?
Worm gear drives are used in various applications that require high reduction ratios, self-locking properties, and compact designs. Common applications include:
- Conveyor systems
- Elevators and lifts
- Automotive steering mechanisms
- Industrial machinery and manufacturing equipment
- Gate and valve actuators
What applications use slew drives?
Slew drives are widely used in applications that demand high torque and the ability to handle significant loads. Typical applications include:
- Solar tracking systems
- Construction equipment such as cranes and excavators
- Wind turbines
- Aerial work platforms
- Robotics and automation systems
How to decide on which kind of drive to use?
Your applications requirements will dictate which option you choose.
If your application requires a compact design with a high reduction ratio and self-locking capability, a worm gear drive may be the better choice. If you need a drive that can handle high loads while maintaining smooth rotational movement, a slew drive is likely the more suitable option.
There are multiple uses for each type of drive. The most appropriate choice for you will depend on the specific requirements of your application.
Cone Drive slew and worm gear drive options
Cone Drive provides a range of motion control gearing options for use in a wide range of industries.
Our worm gearing options provide high torque capabilities in small packages, available in servo and NEMA driven options.
Cone Drive slewing solutions offer low profile turning power, providing smooth rotation and shock resistance.