3-10 CHAPTER 3: SETTING INTO OPERATION
ALPHA 552
6. HYDRAULIC CONNECTIONS
The guiding concept of the ALPHA 552 barfeed system consists mainly in maintaining the bar suspended
in an oil bath. This reduces friction of the turning bar stock, and dampens the vibration generated by the
bar stock.
The hydraulic oil is contained in the machine itself. Aspirated by a pump motor, it is injected into the front
rest and the guiding elements.
Settings
The pressure is constantly monitored by a
pressure switch set at the factory at a point of
release of 0.5 bar. It may be adjusted, if
necessary, as follows :
1. With a screwdriver, unscrew the locking
screw (A).
2. Insert a hex head wrench (5mm) into the
center of the pressure switch (B).
By turning clockwise, the release of the
pressure switch will take place at a
pressure higher than the original setting.
Turning in the opposite direction, will
produce the reverse.
3. When the adjustment is completed,
retighten the locking screw (A).
Filling
The barfeed system is delivered without oil. 50 litres (14 gallons) of hydraulic oil of the type indicated
below must be provided by the client. The oil must be poured directly into the machine.
Consult your supplier who will recommend the correct oil for you.
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