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Torque Unit Oil Capacity
Torque Unit Oil Capacity
U.S. gal
10.0 .45
20.0 .58
40.0 4.24
120.0 7.16
200.0 17.76
300.0 17.76
550.0 25.97
700.0 25.97
HOW TORQUE UNIT WORKS
Gleason series MRH reels feature torque units which work on a patented self braking hydro-
dynamic clutch system.
The Functions of the torque unit are:
• To provide a constant torque on the drum shaft.
• To gear the drum rotating speed to the reeling diameter of the cable.
• To brake the drum when stationary.
• To allow a controlled unreeling of the cable.
• To regulate the torque output according to the requirements of each application.
The torque unit is powered by a motor rotating at a constant speed. Normally a conventional
electric squirrel cage motor is used but the unit can also be powered by an air or a hydraulic
motor.
The torque of the driving motor is transmitted to the drum shaft through a hydrodynamic
clutch which is combined with a worm gear reduction. The output torque is only minimally
affected by the rotating speed of the input and output shafts. The output torque can be set
from zero to maximum torque through a spring arrangement in the clutch.
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Section View of Torque Unit