Basic HTML Version
If user wants to change the length of the single arm of a clamping cylinder, it should be noted that the length must be less than 1.2
times the standard length in order to avoid serious slanting of the piston rod. If the length in design needs to be larger than the
aforesaid limit value, it is better to use double arms in order to extend the life of the cylinder. Double arms are arms extended
equally on the other side of piston rod with a support of same height as the workpiece.
Workpiece should not be clamped within the swing stroke during the downward movement of the clamping arm, and should be
clamped within the vertical stroke only.
During the loading and unloading of a workpiece, it is necessary to use an air gun to clean the cylinder for removing the iron slag
or foreign objects attached thereon in order to prevent the foreign objects fromentering the seal to cause oil / air leakage.
It is necessary to use device having F.R.L. (Filters / Regulators / Lubricators) function in the pneumatic line in order to effectively
remove the moisture, lubricate the cylinder and avoid the damage of the swing mechanism due to inertia impact of the clamping
arm.
If the direction of the single arm needs to be changed due to the problem of piping, it should be done with a wrench by holding the
clamping arm first, and then unscrewing the screw and knocking the clamping arm upward to change its direction as shown in
figure below. One should not apply lateral force to the clamping armor laterally impact the clamping arm to change its direction in
assembled position. This can cause damage of the swingmechanismdue to improper force applied on it.
Fitting and removing clamping arm:
R/L signifies right hand swing / Left hand swing. Please indicate while ordering.
In right hand swing, when seen from above
while clamping down, the arm first swings 90 degrees* clockwise and then clamps down whereas in left hand swing it
rotates 90 degrees counterclockwise and then clamps down.
*Clamps with swing angle other than 90 degrees are also available. Other swing angles available are 60° and 45°.
The power source should not exceed the ratedmaximumpressure and the highest flow value.
POINTS TO REMEMBER
Hold clamping arm with spanner.
Tighten/loosen screw.
Knock out clamping arm from
piston rod.
Caution!
Do not strike sides
of clamping arm.
Power Unit
HYDROPNEUMATIC POWER UNIT
GERARDI Hydropneumatic Power Unit for hydraulic clamping devices and its bi-products is designed to meet all needs regarding the
powering of hydraulic cylinders where low flow rates and high pressures are required. It is driven by air at its inlet to produce hydraulic
pressure at its outlet. The special design shape of the power unit is such that a high performance system can be implemented taking up
very little space. Thanks to the special design principles, the pump section adopted allows the hydropneumatic power unit to be
installed in very hostile environments, such as the work area of machine tools, etc. The unique modular hydraulic flow control system
allows controlling up to 6 separate users from just one power unit.
SPECIFICATION
MAX. PERMISSIBLE INLET AIR PRESSURE:
7 bar
RECOMMENDED INLET AIR PRESSURE:
5,5 bar
OIL DELIVERIES: 1.2-1.4-2.2-2.7-4.3
Liters/min
MAX. OIL OUTLET PRESSURE AT 5 BAR AIR INLET PRESSURE:
400 bar
MAX. NO. OF USERS RECOMMENDED:
6
290
156
130
102
M8
AIR INLET 1/4"
250
180
348
USER PORT 1/4"
Outlet pressure can be regulated and set to desired pressure.
The pump in its basic version is supplied complete with teflon tank, fill plug, silencer, quick acting air connector fitting and hydraulic
control box.
Very suitable for operating Single Acting Swing Clamps.
Art. 393 - Power unit with Manual control, Art. 394 - Power unit with Pneumatic control, Art. 395 - Power unit with
Electrical control
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