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Assembly and Operating Instructions – Gear Units R..7, F..7, K..7, K..9, S..7, SPIROPLAN® W
4
Accessory equipment
Mechanical Installation
AT.. hydraulic
centrifugal
coupling
Hydraulic centrifugal couplings are fluid couplings based on the Föttinger principle. They
consist of 2 hinged hemispheres with blades separated by a tight gap.
The applied torque is transmitted by the inertial force of the streaming fluid. This fluid
circulates within a closed circuit, between the pump wheel (primary side) [12] on the driv-
ing shaft (motor shaft) and the turbine wheel (secondary side) [9] on the driven shaft
(gear unit input shaft).
The following figure shows the structure of a drive with hydraulic centrifugal coupling:
1901143691
[1]
Gear unit
[6]
Extended housing com-
plete
[11] Operating fluid (hydraulic oil)
[2]
Basic flange complete
[7]
Motor
[12] Pump wheel
[3]
Backstop (optional)
[8]
Filler plug
[13] Elastic components
[4]
Intermediate flange
[9]
Turbine wheel
[14] Flexible connecting coupling
[5]
Hydraulic centrifugal coupling
[10] Coupling half
[15] Fusible screw plug
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8] [9] [10] [11] [12]
[14]
[13]
[15]
INFORMATION
For detailed information about the AT.. coupling, refer to the "Centrifugal and Friction
Couplings AR.. and AT.." operating instructions, part number 17036011/EN.
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