Stronghold SELECT Series, Manual

Page: 28 / 44

15.28
Subject to technical modifications without notice DE-STA-CO
StrongHold SELECT Hyd. Swing/Pull Clamp 4,000 lb. Arms
U
P B
H
A
(031-S-4000)
Q
G
V
0M
A
(031-L-4000)
I
C
T
D
J
K
L
IMPORTANT:
Any clamp using a modified or custom arm that is longer or heavier than DE-STA-CO’s standard arms
must be derated to prevent internal damage.
Do not exceed the maximum speed and pressure ratings for DE-STA-CO’s standard arms
For maximum hydraulic pressure and speed ratings, see the accompanying charts
Do not use meter-out circuitry for controlling double-acting clamp speeds
Contact DE-STA-CO if further design assistance is required
Custom built arms of any length must clamp to the swing/pull
clamp’s piston rod in a manner similar to the DE-STA-CO arms
or some derating of the clamp will be necessary.
The design feature “K,” in the chart and drawing at the bottom
of this page, is recommended for all applications of custom,
single arms. See the accompanying chart for design details. In
applications where there is no bending stress being transferred
into the piston rod (like push/pull linkages and equalizing double
arms), this design detail may be eliminated. In these
applications, the clamp’s full capacity (referred to as “straight
pull” capacity) is available.
D
H
C
E
B
F
G A
Maximum Length / Pressure
Operating Range
Clamps must operate at or below maximum
arm length/pressure curve:
To approximate clamping force with any arm
at less than maximum pressure:
FORCE = P x A x [1-(P/M x .23)]
P = Hyd. system operating pressure (PSI)
A = Clamp effective area (sq. in.)
M = Max. rated pressure of chosen arm
length (PSI)
Chart Legend
Cat no.
Specifications
A B C D G H I J K L M P Q T U V
Weight
(lbs.)
031-S-4000
031-L-4000
4.17
8.43
1.42
1.42
1/2-13
1/2-13
1.89
1.89
0.138
0.138
2.56
2.56
0.83
0.83
1.18
1.18
0.55
0.55
0.43
0.43
1.26
1.26
2.17
–
M12
M12
0.58
–
2.75
7.01
0.98
0.98
1.80
2.80
Custom Arm Mounting Dimensions for 4,000 lb. Swing/Pull Clamps
Cat no.
Specifications
A B C D E F G H
32MM 1.26 1.18 1.89 1.42 0.138 0.55 0.43 M12 x 1.75
031-S-4000 • 031-L-4000
2.17 4.00 5.00 6.00 7.00
3000
2500
2000
1500
1000
500
Arm Length (In.)
C
la
m
p
in
g
F
o
rc
e
(L
b
s.
)
0
5000
3625 3100 2540 2175 1885
Max. Allowable Arm Weight = 2.8 Lbs
Pressure (psi)
152 91
Max Flow (in /min.)
3
1740
3.00
4500
4000
3500
S
tr
o
n
g
H
o
ld
C
la
m
p
in
g
S
y
s
te
m
T
M
15_StrongHold.qxp:15_DES_StrongHold-1-14.indd 1/2/08 9:03 AM Page 15.28