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Planetary Yaw Drive

Planetary Yaw Drive

XLT Transmission planetary gearboxes are used on different part of wind energy plant: the rotor and the nacelle. Our slewing planetary gear units from the yaw and pitch range are normally used to control blade pitch. The nacelle at the top of the tower is connected to the rotor and houses...

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XLT Transmission planetary gearboxes are used on different part of wind energy plant: the rotor and the nacelle. Our slewing planetary gear units from the yaw and pitch range are normally used to control blade pitch. The nacelle at the top of the tower is connected to the rotor and houses the gearbox, the electrical generator, the yaw system, and the control system. To make sure that the rotor axis is constantly aligned with the wind direction for maximum energy output, large wind turbines are equipped with a yaw system that allows the nacelle to adjust its position according to the direction and force of the wind. Nacelle rotation is controlled by a yaw system, planetary gear unit with electric brake motor, which is one of XLT s most popular products. Each wind turbine must have between two and six gear units, depending on the size, and the motor can be electric or hydraulic. Two or three-stage gear units, combined with a worm gearbox on the input side, or four or five-stage gear units from the yaw and pitch drive series are normally used. Output pinions can be integrated or inserted. XLT is proud of its quality assurance policy, including the Type Approval Certificate from DNV.1

EP706BL4 EP707AL4 Yaw and Pitch Drive

Dimension Type
EP706BL4 EP707AL4 EP709AL4 EP711BL4
D2 200 240 280 400
D3 250 335 385 445
D4 280 365 420 490
D5 292 345 345 428
D6 12-ф17 14-ф17 14-ф22 24-ф22
L1 40 60 60 110
L2 Size according to motor type
Pinion data Pinion data according to customer



EP706BL4, EP707AL4 Yaw and Pitch drive,EP709AL4, EP711BL4 Yaw and Pitch drive

Technical specification

Type Nominal
Output Torque
(N.m)
Peak Static
Output Torque
(N.m)
Ratio
(i)
EP706BL4 8000 15000 203--2045
EP707AL4 12000 25000 278--1856
EP709AL4 18000 30000 278--1856
EP711BL4 35000 80000 256--1606


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