EWA21 Series Slewing Drive

The slewing drive is also called a worm-type slewing reducer, a full-circle slewing reduction transmission mechanism that integrates a driving power source. This product is suitable for low-speed applications. It is generally composed of a worm, a slewing bearing, a housing, a motor, or a motor. In terms of carrying capacity, the worm gear type performs exceptionally well.Compared with traditional rotary products, the rotary drive adopts an envelope worm transmission, which can obtain a relatively large reduction ratio; its carrying capacity, Anti-deformation ability, and higher transmission rigidity. The worm gear drive has reverse self-locking characteristics, which can realize reverse self-locking. That is, the worm can only drive the worm, but the worm cannot be caused by the worm, significantly improving the main machine's operational stability and safety factor.

Slew Drive Specifications

1) Tilting Moment Torque: Torque is the load multiplied by the distance between the position of load and the center of slewing bearing. If the torque generated by load and length is greater than the rated tilting moment torque, slewing drive will be overturned.2) Radial load: Load vertical to the axis of slewing bearing3) Axial load: Load parallel to the axis of slewing bearing4) Holding torque: It is the reverse torque. When the drive is rotating reversely and parts are not damaged,5) The maximum torque achieved is called holding torque.6) Self-locking: Only when loaded the slewing drive cannot reverse rotate, thus called self-locking.

Performance Parameters

Front View	Top View

 

Output torque	Tilting moment torque	Holding torque	Axial load	Radial load	Ratio	Backlash	Weight
输出转矩	倾覆力矩	保持力矩	轴向承载力	径向承载力	速比	精度	重量
28.7 kN.m	203 kN.m	107 kN.m	1600 KN	650 KN	90:1	<= 0.1 °	170Kg
21180 Lbf.ft	150000  Lbf.ft	78900 Lbf.ft	35700 Lbf	146000 Lbf

Industry Applications

The slewing drive can be used in any situation requiring full-circle rotation and variable speed. When it is necessary to achieve more excellent torque power transmission, higher precision motion transmission, or the selection of a mechanism that requires a high degree of compactness and integration of the body structure, the slewing drive Is the best solution.The more common applications are the full-circle slewing structure of engineering and construction machinery, solar energy, wind energy, and various long-term automatic tracking machinery. Due to the compact design and short transmission chain, the slewing drive is easier to achieve higher accuracy and more It is easy to carry out digital control, so there are many applications in the field of industrial robots.

Choose Our Advantage

--Customer can choose the motor according to our already designed slewing drive connect dimension.--We can design the connecting structure according to the customer's motor connect dimension.--We can help provide the parts with Hydraulic motor, DC motor, AC motor, Stepper or Servo motor.