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SECTION 21 -
SPENCER FRANKLIN HYDRACLAMP, HYDRAULICS
AND PNEUMATICS
WDS
WDS
www.wdsltd.co.uk21-21
&
0845 606 66 77
•
:
www.wdsltd.co.uk•
*
sales@wdsltd.co.ukPowRlock PowRam Head
SF-3520-3525
45°
40 P.C.D.
BLEED SCREW
M6 x 1.0 x 8 DEEP
A
B
G
C
D
J
E
F
H
SF-3525 ONLY
SF-3520 ONLY
1/4" B.S.P.
3520
Stroke*
mm
Effective
Area cm ²
Swept
Volume cm³
Dimensions in mm
(kg)
WDS No.
Seal Kit No.
A B C D E F G H I
15 19.64 29.46 65 60 40 75 20 70 27 3 2 1.68
SF-3520
SF-4413
Body/Cap Thread M32 x 1.5
* Do not exceed Maximum Stroke
Mounting: To include these heads in a fixture it is only necessary to retain them in position by the 2 tapped holes in the rear location, allowing the
back face of each head to react against a rigid face.
OPTIONAL VARIATIONS FOR STANDARD TYPE 3520 POWRAM
Part No SF-3520FL - Front flange mounted (circular) instead of screwed cap.
Dimensions in mm
Flange No.
A B C D E F
108 85.7 10.4 30.1 16.6 10.3 SF-3520
C
C
A
D
F
E
C
B
GE FOR:
-3525
B
MF-3300MF
A
A
Note: Unless otherwise stated assume there are four counter
bored holes equi-spaced on ØB.
NOTE: All graphs are Rams with Springs fitted.
Graphs are calculated using theoretical pressures and
actual values will be less due to loss in system pressure.
TECHNICAL INFORMATION
-
Max Operating Pressure =
350 BAR (5000 P.S.I)
T
heoretical Thrust (N) =
Oil Pressure (bar) x Effective Area (cm²)
Re
fer to page 21-46 & 21-47 for
more technical information