What is slew drive and its advantages

As a kind of clean and pollution-free energy, solar energy has a very broad development prospect, and has become a green energy developed by many countries. However, there are some problems in solar energy, such as low density, intermittence, and the direction and intensity of illumination change with time. Most of the traditional solar panels are fixed at a certain angle, which does not change with the position of the sun, which seriously affects the photoelectric conversion efficiency. According to the calculation: if there is a deviation of 25 degrees between the photoelectric system and the solar light, the output power of the photovoltaic array will be reduced by about 10% due to the reduction of the vertical incident radiation energy.

wisd (2)

All year round, spring, summer, autumn and winter, the rise and fall of the sun and the angle of the sun’s light are changing from day to night. Therefore, how to change the angle of the battery panel with the light angle to improve the photovoltaic conversion rate requires our slew drive . Today, I’ll take you to know what slew drive is.

1. Definition of slew drive.  

Slew drive device is a new type of rotary products, which is made of worm gear, slewing ring , shell and motor. Since the core part adopts slewing bearing, so it can bear axial force, radial force and overturning moment at the same time. Slew drive and traditional rotary products compared, it has the characteristics of simple installation, easy maintenance and saving installation space to a greater extent. This product can be widely used in heavy plate transport vehicle, container crane, truck mounted crane and high-altitude operation.

wisd (3)

2. Slew drive structure

Slew drive can be divided into single worm drive, double worm drive and special type rotary drive. Xuzhou Wanda slewing bearing co.,ltd  could supply the slew drive in SE Seires and WEA Series.

SE series adopts toroidal worm structure design, multi-tooth contact, strong impact resistance, suitable for light load and low speed applications. Such as solar tracker system,Small environmental protection equipment etc..

WEA series adopts curved tooth surface structure design, which has much stronger anti-fatigue and gluing ability. It is suitable for heavy-duty and medium-speed applications. Such as Construction machinery, construction machinery etc..

3. Three advantages of slew drive


Due to the high integration of the slew drive, users do not have to purchase and process each part of the rotary device one by one. To a certain extent, it also reduces the preparation process at the beginning of production, thus greatly improving the labor productivity.

wisd (1)


Worm gear transmission has the characteristics of reverse self-locking, which can realize reverse self-locking, that is, only worm can drive worm gear, but not worm gear. The safety factor of main engine and slewing equipment can be greatly improved in high-altitude operation. Compared with traditional rotary products, slew drive has the advantages of simple installation, easy maintenance and saving installation space.

c.)Simplify host design

Compared with the traditional gear transmission, worm gear transmission can get a relatively large reduction ratio. In some cases, it can save the reducer parts for the main engine, so as to reduce the purchase cost for customers and greatly reduce the failure rate of the main engine.

The above is the introduction of the slewing drive. If you have any other questions, you can communicate with us again, welcome to contact us !

Post time: Dec-21-2020

Send your message to us:

Write your message here and send it to us