Slewing drive types
Slewing drives are available in many configurations depending on the task at hand. These may be single axis or dual axis turning in unison.
An hourglass configuration expands the capability from a single gear tooth to as many as eleven to create rotational torque by contacting the worm screw. Multiple gear teeth interacting at once allows the equipment to be more efficient and generate more torque.
What is a slewing drive?
A slew drive is a gearbox designed to handle radial or axial loads using high rotational torque. In addition, the slewing ring bearing, at the heart of the drive, enables it to withstand high overhung or moment loads. A descendent of the “worm” screw, slewing drives are present in construction machinery, manufacturing, military equipment and many other applications that require strength and precision.
The physics of the slew drive makes it a versatile solution for many applications. In operation, the slew drive’s axial movement, or motion around its axis, interacts to create radial torque. The action occurs by meshing the grooves of the horizontal screw with the teeth of a perpendicular gear. While turning, the worm gear’s axial movement transfers magnified torque force to the radial gear. The number of threads on the horizontal screw and the number of gears that interact will determine the speed ratio of the setup.
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