Siemens FLENDER K1A, Руководство по сборке и эксплуатации

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BA 5230 en 04/2011
5.7.5 Separate / external oil­supply system
It is possible to use an oil­supply system which is separately supplied by Siemens or an external system
to ensure cooling of the oil.
Be sure to observe the operating instructions of the oil­supply system for operation and
maintenance.
When operating and servicing the components of the oil­supply system, observe the operating
instructions of the components.
For technical data, refer to the data sheet and/or the list of equipment.
5.8 Couplings, clutches
As a rule, flexible couplings or safety clutches are used for driving the gear unit.
If rigid couplings or other in­ and/or output elements, which create additional radial and/or axial forces,
(e.g. gear wheels, belt pulleys, disk flywheels, hydraulic couplings) are to be used, this must be agreed by
contract.
5.9 Backstop
For certain requirements, the gear unit can be fitted with a mechanical backstop on the drive or output shaft.
This backstop permits only the specified direction of rotation during the operation of the unit. The direction
of rotation is marked by a corresponding arrow on the input and output side of the gear unit.
The backstop is fitted oiltight on an adapter flange on the gear unit and integrated in its oil­circulation
system.
The backstop is fitted with centrifugally operated sprags. If the gear unit rotates in the prescribed direction,
the inner ring rotates with the sprag cage in the direction of shaft rotation, while the outer ring remains
stationary. From a specific speed up (disengagement speed) the sprags disengage from the outer ring.
In this operating condition the backstop operates wearfreely.
6
5
3
4
2
1
Fig. 9: Backstop
1 Outer ring 4 Shaft
2 Inner ring 5 Cover
3 Cage with sprags 6 Residual­oil drain
The stop direction can be changed by turning the cage around. If a change in stop direction is
required, Siemens should be consulted beforehand.
To avoid damaging the backstop or the gear unit, the motor must not be run adversely
to the stop direction of the gear unit.
Observe the notice fixed to the gear unit.
Before connecting the motor, determine the direction of rotation of the three­phase current supply using
a phase­sequence indicator, and connect the motor in accordance with the pre­determined direction of
rotation.