Enerpac SC-Series - Manual (Page 3)

Clamping Force -v- Arm Length Graphs
PRELIMINARY INFORMATION
IMPORTANT: Failure to read and follow these directions may lead to system mal-
function or product failure, and could invalidate your warranty.
(1) High flow rates can lead to excessive cylinder speed which can cause cylinder
damage. Hydraulic pressure and cylinder speed must be adjusted to match the
length of the clamp arm. The clamping force also varies with the length of the
clamp arm. Refer to page 2 for operating specifications.
(2) Flow controls with return checks should be used to reduce swing cylinder speed
to the recommended rate. The return checks help minimize back pressure that
could lead to an unclamp malfunction on single-acting systems.
(3) When using single-acting cylinders, limit the return flow back pressure to 3,5
bar (50 psi) maximum. Large diameter tubing (10 mm [.39 in.] O.D. or larger)
and flow controls with free flow return checks help minimize back pressure.
Consult Enerpac for proper system design.
(4) Excessive return flow back pressure can also damage double-acting swing cylin-
ders. Limit the return flow back pressure to 42 bar (600 psi) maximum.
Double-acting systems should be set up for a metered-in with reverse free flow
in the clamp port.
(5) Clamping of the part should occur at the midpoint of the vertical travel. No
clamping of the part shall occur while the swing clamp is turning. Clamp arm
should freely travel during the 90° rotation (avoid contact with cutter heads,
tools, etc.).
(6) Attaching clamp arm to cylinder plunger must be done according to the instruc-
tions on page 7.
3
1
25
[1.00]
51
[2.00]
76
[3.00]
102
[4.00]
127
[5.00]
1,33 [300]
2
5
4
0
3
6,67 [1500]
0
5,34 [1200]
4,00[900]
2,67 [600]
350 [5000]
350 [5000]
262 [3800]
131 [1900]
103 [1500]
172 [2500]
76
[3.00]
13
[.50]
25
[1.00]
38
[1.50]
51
[2.00]
64
[2.50]
0,67 [150]
0
0
1
1,34 [300]
2,00 [450]
2,67 [600]
2
3
5
350 [5000]
350 [5000]
207 [3000]
145 [2100]
128 [1850]
107 [1550]
4
152,4
[6.00]
3,3 [500 ]
0 127,0
[5.00] 50,8
[2.00]
25,4
[1.00]
101,6
[4.00] 76,2
[3.00]
4,44 [1000]
6,66 [1500]
8,89 [2000]
11,11 [2500]
15,55 [3500]
13,33 [3000]
0
5
4
3
2
1
350 [5000]
235 [3400]
138 [2000]
117 [1700]
179 [2600]
350 [5000]
Figure 1
2,2 kN (500 lb.) Models
Clamping F
orce [kN (lb
.)]
Clamping F
orce [kN (lb
.)]
Clamping F
orce [kN (lb
.)]
Max.
Clamp Pressure [bar (psi)]
Max.
Clamp Pressure [bar (psi)]
Max.
Clamp Pressure [bar (psi)]
11,6 kN (2600 lb.) Models
5,6 kN (1250 lb.) Models