• If there is a risk of freezing temperatures, drain the cooling water out of the coil and blow the
coil out with compressed air to remove any water residue.
• Use a suitable cooling water ow regulator (e.g. a pressure reducing valve or an appropriate
isolation valve) in order to prevent excessive water pressure at the cooling water inlet.
WARNING
Risk of eye injury from compressed air
Water residue and dirt particles can cause damage to eyes.
Wear suitable safety goggles.
Further information
For further information and a detailed illustration of the gear unit and the connection
dimensions, please refer to the dimension drawings in the complete gear unit documentation.
The required cooling water ow rate and the maximum permissible inlet temperature can be
found in the separate data sheet, the list of equipment or the dimension drawing in the complete
documentation for the gear unit.
3.10 Couplings
Flexible couplings or safety couplings are generally used at the input end of the gear unit.
Use of rigid couplings or other input or output elements that generate additional radial or axial
forces (e.g. gear wheels, belt pulleys, ywheels or hydraulic couplings) must be agreed
contractually.
Further information
You can nd additional information about the couplings in the coupling operating instructions
provided in the complete gear unit documentation.
3.11 Shrink disk
A shrink disk is provided as a frictional clamping connection between the gear unit hollow shaft
and the driven machine on shaft-mounted gear units.
The shrink disk allows an interference t to be created between a hollow shaft and a stub shaft
(machine shaft), referred to hereafter as "stub shaft". The interference t is capable of
transferring torques, bending moments and forces. Crucial to the successful transmission of
torques and/or power is the joint pressure between the hollow and stub shafts generated by the
shrink disk.
Description
3.11 Shrink disk
Assembly and operating instructions A5051en
36 Edition 06/2020
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