WE Series

 
The WE series is another highly common and critical type of slewing drive. Its core feature lies in the integrated structure combining an external gear slewing ring with a worm gear drive.
 
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Key Features And Advantages

  • External gear design, direct torque transmission path:​ Particularly well-suited for withstanding significant overturning moments.

  • Exceptional rigidity and anti-overturning capability:​ Ideal for heavier loads and more demanding working conditions.

  • Symmetrical structure, flexible installation:​ Allows for versatile mounting configurations.

Retains the core advantages of the SE series:​
  • High reduction ratio and self-locking function:​ Utilizes worm gear mechanisms to provide high reduction ratios and reliable self-locking.

  • Smooth operation, adjustable precision:​ Offers selectable backlash grades to meet specific requirements.

  • Integrated design, easy installation:​ A compact, ready-to-use solution that simplifies assembly.

Typical Application Areas

The WE series is particularly well-suited for applications involving heavy loads, large overturning moments, and extremely high rigidity requirements.

Heavy-Duty Construction Machinery:
  • Tower Cranes:​ Slewing mechanism for the tower top (tower cap).

  • Port Cranes (Ship-to-Shore, Rubber-Tired Gantry):​ Slewing platform for large-scale cranes.

  • Large Excavators/Rotary Drilling Rigs:​ Slewing support for the superstructure.

New Energy - Wind Power Generation:
  • Wind Turbine Yaw Systems:​ One of the most classic applications of the WE series, used to precisely orient the entire nacelle into the wind, withstanding massive wind-induced overturning moments.

Military and Aerospace:
  • Radar Pedestals:​ Azimuth/elevation drives for large land-based or shipborne radars, demanding high rigidity and precision.

  • Missile Launch Systems:​ Drive for rotating launch platforms.

Heavy-Duty Industrial Automation:
  • Large Welding Positioners/Tilters:​ Used for welding heavy pressure vessels and ship sections.

  • Large CNC Rotary Tables:​ Used for heavy-duty machine tools.

Special Equipment:
  • Large Amusement Rides:​ Drive for Ferris wheels and large rotating amusement devices.

  • Marine and Offshore Engineering:​ Slewing mechanisms for shipboard cranes and deck machinery.

Technical Parameters

Slewing drive performance parameters

Model

WE7

WE9

WE12

WE14

WE17

WE21

WE25

WE32

Gear Ratio

71:01:00

61:01:00

78:01:00

85:01:00

102:01:00

125:01:00

150:01:00

154:01:00

Output Torque (max.)

3.5 kN.m

2.58x10³ Ibf.ft

12.2 kN.m

9.0x10³ Ibf.ft

15.6 kN.m

11.5x10³ Ibf.ft

17kN.m

12.5x10³ Ibf.ft

20.4kN.m

15.1x10³ Ibf.ft

25kN.m

18.5x10³ Ibf.ft

30kN.m

22.1x10³ Ibf.ft

32kN.m

23.6x10³ Ibf.ft

Tilting Moment (max.)

13.5 kN.m

9.96x10³ Ibf.ft

33.9kN.m

25x10³ Ibf.ft

54.3kN.m

40x10³ Ibf.ft

67.8kN.m

50x10³ Ibf.ft

135.6kN.m

100x10³ Ibf.ft

203kN.m

149.7x10³ Ibf.ft

203kN.m

199.9x10³ Ibf.ft

347kN.m

256x10³ Ibf.ft

Holding Torque

10.4 kN.m

7.67x10³ Ibf.ft

38.7kN.m

28.5x10³ Ibf.ft

43 kN.m

31.7x10³ Ibf.ft

48 kN.m

42x10³ Ibf.ft

72.3kN.m

53x10³ Ibf.ft

105.8kN.m

78x10³ Ibf.ft

158.3kN.m

116.8x10³ Ibf.ft

190kN.m

140x10³ Ibf.ft

Static Axial Load Rating

133kN

30x10³ Ibf

338kN

20.3x10³ Ibf

475kN

106.8x10³ Ibf

555 kN

124.9x10³ Ibf

970kN

218x10³ Ibf

1598kN

359.6x10³ Ibf

2360kN

531x10³ Ibf

3021kN

680x10³ Ibf

Static Radial Load Rating

53 kN

11.9x10³ Ibf

135 kN

15.9x10³ Ibf

190kN

42.7x10³ Ibf

222 kN

49.9x10³ Ibf

390kN

88x10³ Ibf

640kN

144x10³ Ibf

945kN

212.6x10³ Ibf

1210kN

272x10³ Ibf

Mechanical Efficiency

40%

40%

40%

40%

40%

40%

40%

40%

Self-locking

Reliable static self-locking

Reliable static self-locking

Reliable static self-locking

Reliable static self-locking

Reliable static self-locking

Reliable static self-locking

Reliable static self-locking

Reliable static self-locking

Precision

≤0.2°

≤0.2°

≤0.2°

≤0.2°

≤0.2°

≤0.2°

≤0.2°

≤0.2°

IP Class

IP65

IP65

IP65

IP65

IP65

IP65

IP65

IP65

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