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SECTION 21 -
SPENCER FRANKLIN HYDRACLAMP, HYDRAULICS
AND PNEUMATICS
WDS
&
0845 606 66 77
•
:
www.wdsltd.co.uk•
*
sales@wdsltd.co.uk21-46
WDS
www.wdsltd.co.ukP
oil
F
A
p
A
out
Spencer Franklin Information Sheet
Actual pressures can be up to 10% less than theoretical due to system losses.
When using the calculations please use the units given in the table.
Ram Information
Symbol Unit
Definition
mm Maximum stroke in millimetres
F
N
Clamping force in Newtons
A
p
cm
2
Internal surface area of the piston (effective area in catalogue tables)
A
out
cm
2
Output surface area of the ram or the output surface area of the fixture
attached
P
oil
Bar Oil pressure in bar
P
out
Bar Output clamping pressure in bar
P
air
Bar Air input pressure for booster in bar
R
N/A Ratio of booster
V
o
cm
3
Volume of oil required for maximum stroke
Key
Booster Information
= ×
×
=
= × × 10
(
)
= ×
× 9.81
*Select a booster 15-20% greater than
the calculated volume, to allow for
expansion.
Available for the past 60 years the range is particularly suitable for simple clamping and presswork
applications. Using mainly single acting spring return cylinders the range offers a simple and economical
solution to clamping and presswork problems.
Air/Oil boosters and pumps are usually part of the above systems
–
so the only service required is a
compressed air supply.
Air Input
Optional Oil
Reservoir
Breather Plug
Oil Output
Ports