Rotary couplings, four passage
with/without leakage oil recirculation
ND 5
General description
Rotary couplings supply the pressure oil to rotating and swivelling installations. They are mounted in the centre of rotation of the installation.
Operating conditions
When selecting, operating pressure and speed have to be taken into account. Only use hydraulic oil of the viscosity classes 22, 32 and 46.
The rotary coupling has to be connected to the power unit on all levels to ensure sufficient lubrications of the seals.
The rotary couplings must only be used in a temperature range between + 10 °C and
+ 60 °C. This also applies to possible special versions with FKM seals.
Operating conditions, tolerances and other data see data sheet A 0.100.
Versions
with or without leakage oil recirculation in the housing
Technical data
Operating pressure range: 10 – 500 bar
Max. admissible number of rotations: see catalogue sheet
Starting torque: see catalogue sheet
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