Enerpac ST-121 - Manual (Page 2)

SPECIFICATIONS
Operating Specifications — Maximum Flow Rate Chart
Also see graphs on page 3.
300 lb (1,3 kN) — Maximum Clamp Arm Length is 2.25" (57 mm)
Arm Length [inches (mm)] straight pull
0.87 (20)
standard arm
1.25 (32)
extended
1.75 (44)
extended
2.25 (57)
extended —
Max. Flow [in 3 /min (cc/min)] 10 (164) 10 (164) 5 (83) 5 (83) 5 (83) —
Max. Pressure [psi (bar)] 5000 (350) 5000 (350) 2500 (172) 2000 (138) 1100 (76) —
Clamping Force [lbs (kN)] 347 (1,5) 300 (1,3) 150 (0,67) 100 (0,44) 50 (0,22) —
500 lb (2,2 kN) — Maximum Clamp Arm Length is 3" (76 mm)
Arm Length [inches (mm)] straight pull
0.97 (25)
standard arm
1.5 (38)
extended
2.0 (51)
extended
2.5 (64)
extended
3.0 (76)
extended
Max. Flow [in
3
/min (cc/min)] 12 (197) 12 (197) 6 (98) 6 (98) 6 (98) 6 (98)
Max. Pressure [psi (bar)] 5000 (350) 5000 (350) 3000 (207) 2100 (145 1850 (128) 1550 (107)
Clamping Force [lbs (kN)] 585 (2,6) 500 (2,2) 275 (1,2) 175 (0,8) 150 (0,7) 110 (0,5)
1250 lb (5,6 kN) — Maximum Clamp Arm Length is 5" (127 mm)
Arm Length [inches (mm)] straight pull
1.58 (40)
standard arm
2.0 (51)
extended
3.0 (76)
extended
4.0 (102)
extended
5.0 (127)
extended
Max. Flow [in 3 /min (cc/min)] 25 (410) 25 (410) 12 (197) 12 (197) 12 (197) 12 (197)
Max. Pressure [psi (bar)] 5000 (350) 5000 (350) 3800 (262) 2500 (172) 1900 (131) 1500 (103)
Clamping Force [lbs (kN)] 1390 (6,2) 1100 (5,0) 750 (3,3) 450 (2,0) 275 (1,2) 200 (0,9)
2600 (11,6 kN) — Maximum Clamp Arm Length is 6" (152 mm) includes long stroke version
Arm Length [inches (mm)] straight pull
2.00 (51)
standard arm
3.00 (76)
extended
4.00 (102)
extended
5.00 (127)
extended
6.00 (152)
extended
Max. Flow [in 3 /min (cc/min)] 100 (1639) 100 (1639) 50 (820) 50 (820) 50 (820) 50 (820)
Max. Pressure [psi (bar)] 5000 (350) 5000 (350) 3400 (235) 2600 (179) 2000 (138) 1700 (117)
Clamping Force [lbs (kN)] 3100 (13,8) 2600 (11,6) 1600 (7,1) 1100 (4,9) 750 (3,3) 600 (2,7)
Cylinder Specifications
Capacity [lbs (kN)] 300 (1,3) 500 (2,2) 1250 (5,6) 2600 (11,6) 2600 (11,6)
Long Stroke
Body Style threaded body, lower flange , or upper flange mounting upper flange
mounting
Cylinder Type double-acting single-acting and double-acting double-acting
Hydraulic
Stroke [in (mm)] clamp 0.26 (6,6) 0.32 (8,1) 0.39 (9,9) 0.50 (12,7) 1.25 (31,8)
total 0.51 (13,0) 0.65 (16,5) 0.89 (22,6) 1.12 (28,4) 1.87 (47,5)
Effective Area
[in
2 (cm 2 )]
clamp 0.07 (0,45) 0.19 (1,22) 0.28 (1,81) 0.63 (4,06) 0.63 (16,0)
unclamp 0.15 (0,97) 0.24 (1,55) 0.59 (3,81) 1.23 (7,94) 1.23 (31,2)
Oil Capacity
[in
3 (cm 3 )]
clamp 0.04 (0,66) 0.28 (4,59) 0.63 (10,3) 0.71 (11,6) 1.18 (30,0)
unclamp 0.08 (1,31) 0.59 (9,67) 1.23 (20,2) 1.38 (22,6) 2.30 (58,4)
2