The rotator head is made of spherically cast iron or forged tempered steel, depending on operational requirements.
Upper and lower connections are available in a variety of dimensions and are standard. Kinshofer carries upper suspensions for all current makes and models of cranes. Rotator heads with pin connections are equipped with steel bushings.
The pressure relief valve, integrated in the rotator head, allows the rotator independence from the hydraulic system of the crane or
excavator - where an extra pressure relief
valve does not need to be installed.
All seals are specially designed for the application.
Common vegetable oil is perfectly suitable.
A very high degree of sealing between
the distributor and rotor unit results in
minimal internal leakage. Powerful drive
and braking moments are therefore
possible, even at high oil temperature.
The rotor unit is made of high quality tempered
steel and the outer surface is hardened through
a nitrate-coating.
Generously dimensioned roller bearings
guarantee absorption of rated pressure
and tension loads and tilting moments.
The forged, one-piece flange shaft is
made of durable tempered steel.
Horizontal and vertical hydraulic connection of the
attaching equipment is possible.
Oil passages for a single hydraulic circuit are standard and generously dimensioned for
high capacity flow. Connection with standard fittings is possible because flange and
rotator shaft are a single unit, which also means there are no seams between flange
and rotator shaft. Rotators with four oil passages are also available. |
