CHAPTER 3: SETTING INTO OPERATION 3-9
ALPHA 538/552
6. HYDRAULIC CONNECTIONS
The guiding concept of the ALPHA 538/552 bar feeder 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.
6.1. 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. Refer to chapter 6 section 2.2 for
setting instructions.
6.2. Filling
The bar feeder is delivered without oil. 50 liters (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.
Viscosity equivalency table
Consult your supplier who will recommend the correct oil for you.
Thicker oil (ISO 150) may, in certain cases, produce better results when guiding profiled
bars.
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