Enerpac SU7 User Manual

L3096 Rev. B Date: 12/11

Index:

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Repair Parts Sheets for this product are available
from the Enerpac web site at www.enerpac.com, or
from your nearest Authorized Enerpac Service Center

or Enerpac Sales office.

N/A

1.0 IMPORTANT RECEIVING
INSTRUCTIONS

Visually inspect all components for shipping damage.
Shipping damage is not covered by warranty. If
shipping damage is found, notify carrier at once. The
carrier is responsible for all repair and replacement
costs resulting from damage in shipment.

SAFETY FIRST

2.0 SAFETY ISSUES

Read all instructions, warnings
and cautions carefully. Follow

personal injury or property damage during system
operation. Enerpac cannot be responsible for damage
or injury resulting from unsafe product use, lack of
maintenance or incorrect product and/or system
operation. Contact Enerpac when in doubt as to the
safety precautions and operations. If you have never
been trained on high-pressure hydraulic safety,
consult your distribution or service center for a free
Enerpac Hydraulic safety course.

Failure to comply with the following safety
precautions could cause equipment damage and
personal injury.

A CAUTION is used to indicate correct operating or
maintenance procedures and practices to prevent
damage to, or destruction of equipment or other
property.

A WARNING indicates a potential danger that
requires correct procedures or practices to avoid
personal injury.

A DANGER is only used when your action or lack of
action may cause serious injury or even death.

all safety precautions to avoid

Instruction Sheet

70 Bar Swing Cylinders

2,0 kN, 3,5 kN, 5,0 kN, 7,0 kN, 9.0 kN and 20 kN

WARNING: Wear proper personal

protective gear when operating hydraulic
equipment.

WARNING: Stay clear of loads supported
by hydraulics. A cylinder, when used as a

load lifting device, should never be used as
a load holding device. After the load has been raised
or lowered, it must always be blocked mechanically.

DANGER: To avoid personal injury
keep hands and feet away from cylinder
and workpiece during operation.

WARNING: Do not exceed the product
operating specifications. The cylinders

are designed for a maximum pressure of
70 bar [1000 psi]. Never adjust the circuit pressure
beyond the maximum operating pressure
recommendation for the clamp arm length.
Exceeding these specifications can cause equipment
failure and possible personal injury.

DANGER: Never set the relief valve to a

higher pressure than the maximum rated

pressure of the pump. Higher settings
may result in equipment damage and/or personal
injury. Do not remove relief valve.

WARNING: The system operating
pressure must not exceed the pressure
rating of the lowest rated component in
the system. Install pressure gauges in the

system to monitor operating pressure. It is your
window to what is happening in the system.

CAUTION: Avoid damaging hydraulic
hose. Avoid sharp bends and kinks when
routing hydraulic hoses. Using a bent or

kinked hose will cause severe back-pressure. Sharp
bends and kinks will internally damage the hose
leading to premature hose failure.

Do not drop heavy objects on hose. A
sharp impact may cause internal damage

®

to hose wire strands. Applying pressure to
a damaged hose may cause it to rupture.

IMPORTANT: Do not lift hydraulic
equipment by the hoses or swivel couplers.
Use the carrying handle or other means of
safe transport.

CAUTION: Keep hydraulic equipment
away from flames and heat. Excessive

heat will soften packings and seals,
resulting in fluid leaks. Heat also weakens hose
materials and packings. For optimum performance do
not expose equipment to temperatures of 65 °C [150
°F] or higher. Protect hoses and cylinders from weld
spatter.

DANGER: Do not handle pressurized

hoses. Escaping oil under pressure can

penetrate the skin, causing serious injury.
If oil is injected under the skin, see a doctor
immediately.

3.0 PRODUCT DATA

Table 1 - Model Number Code

1

S =
Swing
Clamp

2

U =
Upper
Flange

3

R =
Right Hand
L =
Left Hand

4

S =
Single Acting
D =
Double Acting

WARNING: Only use hydraulic cylinders in
a coupled system. Never use a cylinder with

unconnected couplers. If the cylinder
becomes extremely overloaded, components can fail
catastrophically causing severe personal injury.

IMPORTANT: Hydraulic equipment must
only be serviced by a qualified hydraulic

technician. For repair service, contact the
Authorized ENERPAC Service Center in your area. To
protect your warranty, use only ENERPAC oil.

WARNING: Immediately replace worn or

damaged parts with genuine ENERPAC

parts. Standard grade parts will break
causing personal injury and property damage.
ENERPAC parts are designed to fit properly and
withstand high loads.

5678

7=

70 bar

pressure

rating

2 = 2 kN [441 lbs]
3 = 3,5 kN [769 lbs]
5 = 5,0 kN [1111 lbs]
7 = 7,0 kN [1570 lbs]

2 =
Metric

S =
Position

Indicator
Staff

9 = 9,0 kN [2019 lbs]
20 = 20,0 kN [4490 lbs]

Table 2 - Cylinder Specifications

Capacity kN [lbs]

Body Style

Cylinder Type

Hydraulic
Stroke
mm [in]

Effective
Area

2

[in2]

mm

Oil
Capacity

3

cm

[in3]

clamp

total

clamp

unclamp

clamp

unclamp

2 kN

[441 lbs]

Upper

Flange

Single or

Double
Acting

12,0

[0.47]

22,1

[0.87]

3,02

[0.47]

6,16

[0.95]

6,7

[0.41]

13,61
[0.83]

3,5 kN

[769 lbs]

Upper

Flange

Single or

Double
Acting

12,0

[0.47]

22,1

[0.87]

5,28

[0.82]

9,08

[1.41]

11,7

[0.71]

20,07
[1.22]

5 kN

[1111 lbs]

Upper

Flange

Single or

Double

Acting

12,0

[0.47]

22,1

[0.87]

7,54

[1.17]

11,34
[1.76]

16,7

[1.02]

25,06
[1.53]

2

7 kN

[1570 lbs]

Upper

Flange

Single or

Double
Acting

12,0

[0.47]

22,1

[0.87]

10,30
[1.60]

15,21
[2.36]

22,8

[1.39]

33,60
[2.05]

9 kN

[2019 lbs]

Upper

Flange

Single or

Double
Acting

12,0

[0.47]

22,1

[0.87]

13,19
[2.04]

18,10
[2.80]

29,1

[1.78]

39,99
[2.44]

20 kN

[4490 lbs]

Upper

Flange

Single or

Double
Acting

12,0

[0.47]

22,1

[0.87]

30,44
[4.72]

38,48
[5.97]

67,3

[4.10]

85,05
[5.19]

3.1 Clamping Force vs.
Arm Length

Refer to the tables in this section when
selecting the swing cylinder model and
arm length for your application.

IMPORTANT: As the arm length
increases, the maximum allowable
pressure and flow rate decreases.
Exceeding these limits may cause
damage to the product. If the pressure
required for a desired clamping force
and arm length exceeds the specified
limits, select a higher capacity swing
cylinder model.

Table 3 - Clamp Arm Dimensions “M”, “N” and “P”

P

N

(REF)

M

Size

Dimension

“M”

Dimension

“N”

Dimension

“P”

Conversion Information: 1 mm = 0.039 in.

2 kN 3,5 kN 5 kN 7 kN 9 kN 20 kN

See

See

See

Table

Table

25 mm 27 mm 30 mm 37 mm 38 mm 49 mm

M + N M + N M + N M + N M + N M + N

5

4

Table

6

See

Table

7

Table

Table 4 - Clamping Force vs. Arm Length - 2 kN Models

Dimension “M” (See Graphic in Table 3)

Flange Face to Clamping Point - In Millimeters

10* 20 30 40 50 60 70 80 95**

(kN)

Clamp

Force

Pressure

(bar)

70 1,96

65 1,82

60 1,69

55 1,56

45 1,25 1,33

40 1,11 1,20 1,18

35 0,98 1,07 1,02 1,02

30 0,85 0,89 0,85 0,85 0,85

25 0,71 0,76 0,71 0,71 0,71 0,71

20 0,56 0,62 0,58 0,58 0,58 0,58 0,58 0,56

15 0,42 0,44 0,40 0,40 0,40 0,40 0,40 0,40 0,38

10 0,29 0,31 0,27 0,27 0,27 0,27 0,27 0,27 0,27

Maximum
Flow (lpm)

Notes: * CAS-722 standard arm ** CAL-722 long arm

Conversion Information: 1 mm = 0.039 in. 1 kN = 224.82 lbs. 1 bar = 14.5 psi 1 lpm = 61.02 in³/min

Clamp

Force

(kN)

0,41 0,31 0,25 0,21 0,18 0,15 0,14 0,12 0,11

Clamp

Force

(kN)

Clamp

Force

(kN)

Clamp

Force

Clamp

Force

(kN)

(kN)

NOT RECOMMENDED

Clamp

Force

(kN)

Clamp

Force

(kN)

See

See

Table

8

9

Clamp

Force

(kN)

3

Table 5 - Clamping Force vs. Arm Length - 3,5 kN Models

Dimension “M” (See Graphic in Table 3)

Flange Face to Clamping Point - In Millimeters

Pressure

(bar)

Maximum
Flow (lpm)

Notes: * CAS-7352 standard arm ** CAL-7352 long arm

Conversion Information: 1 mm = 0.039 in. 1 kN = 224.82 lbs. 1 bar = 14.5 psi 1 lpm = 61.02 in³/min

23* 30 40 50 60 70 80 90 100 110 120 125**

Clamp

Clamp

Clamp

Clamp

Clamp

Clamp

Clamp

Clamp

Clamp

Force

Force

Force

Force

Force

Force

Force

(kN)

(kN)

(kN)

(kN)

(kN)

(kN)

70 3,42

65 3,20

60 2,94 3,16

55 2,71 2,89

2,22 2,36 2,36 2,36

45

1,96 2,09 2,09 2,09 2,09

40

1,73 1,85 1,78 1,78 1,78 1,78

35

1,47 1,60 1,51 1,51 1,51 1,51 1,51 1,51

30

1,25 1,33 1,25 1,25 1,25 1,25 1,25 1,25 1,25 1,22

25

0,98 1,07 0,98 0,98 0,98 0,98 0,98 0,98 0,98 0,98 0,98 0,96

20

0,73 0,80 0,76 0,76 0,76 0,76 0,76 0,76 0,76 0,71 0,71 0,69

15

0,49 0,53 0,49 0,49 0,49 0,49 0,49 0,49 0,49 0,49 0,49 0,49

10

0,82 0,79 0,73 0,67 0,63 0,59 0,55 0,52 0,50 0,47 0,45 0,44

NOT RECOMMENDED

(kN)

Force

(kN)

Force

(kN)

Clamp

Force

(kN)

Table 6 - Clamping Force vs. Arm Length - 5 kN Models

Dimension “M” (See Graphic in Table 3)

Flange Face to Clamping Point - In Millimeters

Pressure

(bar)

Maximum
Flow (lpm)

Notes: * CAS-7352 standard arm ** CAL-7352 long arm

Conversion Information: 1 mm = 0.039 in. 1 kN = 224.82 lbs. 1 bar = 14.5 psi 1 lpm = 61.02 in³/min

23* 30 40 50 60 70 80 90 100 110 120 125**

Clamp

Clamp

Clamp

Clamp

Clamp

Clamp

Clamp

Clamp

Clamp

Force

Force

Force

Force

Force

Force

Force

(kN)

(kN)

(kN)

(kN)

(kN)

(kN)

70 4,94

65 4,58

60

4,27 4,51

55

3,91 4,14

45 3,20 3,38 3,38

40 2,85 3,02 2,94 2,94

35 2,49 2,67 2,54 2,54

30 2,14 2,27 2,14 2,14

25 1,78 1,87 1,78 1,78

20 1,42 1,51 1,42 1,42

15 1,07 1,11 1,02 1,02

10 0,71 0,76 0,71 0,71

1,31 1,26 1,16 1,08 1,01 0,94 0,89 0,84 0,79 0,75 0,72 0,70

2,94

2,54 2,54

2,14 2,14 2,11

1,78 1,78 1,78 1,73 1,73 1,71

1,42 1,42 1,42 1,42 1,42 1,40 1,38 1,38

1,02 1,02 1,02 1,02 1,00 1,00 0,98 0,98

0,71 0,71 0,71 0,71 0,71 0,71 0,67 0,67

NOT RECOMMENDED

(kN)

Force

(kN)

Force

(kN)

Clamp

Force

(kN)

Clamp

Force

(kN)

Clamp

Force

(kN)

Clamp

Force

(kN)

Clamp

Force

(kN)

4