Enerpac SC-3 User Manual

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.

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 all safety precautions to

avoid 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 cautions and warnings 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.

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 equipment ratings. Never

attempt to lift a load weighing more than the capacity of

the cylinder. Overloading causes equipment failure and
possible personal injury. The cylinders are designed for a max.
pressure of 350 bar [5,000 psi]. Do not connect a jack or cylinder
to a pump with a higher pressure rating.

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.

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 back­pressure. 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.

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 by

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.

3.0 PRODUCT DESCRIPTION

The SC-3 swing cylinders rotate 90° at the first portion of the
stroke, continuing without rotation for the final clamping stroke.

Instruction Sheet

SC-3

Swing Cylinder

L1682 Rev. O 02/03

®

®

Cylinders can be changed from right swing to left swing or straight
pull by loosening the side plug and then rotating the plunger to the
desired position. The SC-3 comes with a retract spring for single­acting operation. The cylinder is shipped with a clamp arm.

4.0 INSTALLATION INSTRUCTIONS

Secure swing clamps to the fixture by any of the following
methods:

1. Screw housing into tapped hole: 1"-12 UN

2. Bolt the unit down using the four mounting holes in the
flange: .201" diameter.

3. Use the optional base: BKTH-6

4. Mount in a through hole and secure with a locknut: JN-4

5.0 OPERATION

5.1 Single-acting

Connect pressure line to port in flange: 1/8"-27 NPT

5.2 Double-acting

Connect advance line to port in flange and retract line (hydraulic
or pneumatic) to bottom port. Use a wrench to hold hex of bottom
fitting when attaching retract line. The vent plug and filter must be
removed prior to attaching hydraulic lines to the retract port.
Plunger return springs may be removed when used as double­acting.

5.3 Bleeding

Apply low pressure (approx. 10-20 psi) hydraulic pressure to the
system. Loosen the plug opposite the advance port slightly to
allow trapped air to escape, until hydraulic fluid appears. Then
tighten the plug to prevent further leakage.

5.4 Stroke Length

The initial stroke is used for rotation and the remainder is the
clamping stroke.

Stroke: Initial Clamping Total

.50" .25" .75"

5.5 Plunger Rotation

Rotation is clockwise, but can be
changed to counter-clockwise or straight
action by removing the plug (located
opposite the advance port) and ball,
turning plunger so corresponding groove
is visible, and re-assembling ball and
plug. Make sure ball is seated in groove.

5.6 Clamp Arms

Clamp arms supplied with cylinders can be used to full operating
pressure of cylinders and will produce maximum clamping force.
Longer or modified clamp arms will require lowering the maximum
operating pressure and will produce less clamping force. To help
prevent possible internal damage to the cylinder while tightening
the clamp arm to the plunger, we recommend that the bearing
plug located on the side of the cylinder be backed out while
tightening the clamp arm.

Arm Length Max. Pressure Cylinder Capacity

(in) (psi) (lbs) @ max. psi

None 3000 700

*1 3000 500

2 2000 250

* Standard clamping arms supplied. Longer arms indicated in

chart can be fabricated by the user.

Note: Maximum recommended flow rate with standard
arm is 25 in3/min. When using longer clamp arms, the
flow rate should be reduced, and an NV-150 flow control

valve should be used.

Dimensional information for custom clamp arms.

All Enerpac products are guaranteed against defects in workmanship and materials for as long as you own them.

For your nearest authorized Enerpac Service Center, visit us at www.enerpac.com

Clockwise

Straight

(no rotation)

Plunger Rotation

Top View

Counterclockwise

Enerpac Worldwide Locations

✦

e-mail: [e-mail]

✦

internet: www.enerpac.com

Australia

ENERPAC, Applied Power
Australia Ltd.
Block V Unit 3
Regents Park Estate
391 Park Road
Regents Park NSW 2143
(P.O. Box 261) Australia
Tel: [phone]
Fax: [phone]

Brazil

Power Packer do Brasil Ltda.
Rua dos Inocentes, 587
04764-050 - Sao Paulo (SP)
Tel: [phone]
Fax: [phone]

Toll Free in Brazil:

Tel: [phone]
[e-mail]

Canada

Actuant Canada Corporation
6615 Ordan Drive, Unit 14-15
Mississauga, Ontario L5T 1X2
Tel: [phone]
Fax: [phone]

Toll Free:

Tel: [phone]
Fax: [phone]

Technical Inquiries:

[e-mail]

China

Actuant China Ltd.
1F, 269 Fute N. Road
Waigaoqiao Free Trade Zone
Pudong New District
Shanghai, 200 131 China
Tel: [phone]
Fax: [phone]

Actuant China Ltd. (Beijing)
709A Xin No. 2
Diyang Building
Dong San Huan North Rd.
Beijing City, 100028 China
Tel: [phone]
Fax: [phone]

Eastern Europe

Applied Power International S.A.
Case postale 130
CH-1213 Onex-Genéva
Switzerland
Tel: [phone]
Fax: [phone]

France, Greece, Africa

ENERPAC S.A.
B.P. 200
Parc d’Activités
du Moulin de Massy
F-91882 Massy CEDEX
(Paris) France
Tel: [phone]
Fax: [phone]

Germany, Austria

ENERPAC
Applied Power GmbH

P. O. Box 300113
D-40401 Düsseldorf
Germany
Tel: [phone]
Fax: [phone]

India

ENERPAC Hydraulics

(India) Pvt. Ltd.
Plot No. A/571
MIDC, TTC Industrial Area
Mahape-400 701
Navi Mumbai, India
Tel: [phone]
Fax: [phone]

Italy

ENERPAC
Applied Power Italiana S.p.A.
Via Canova 4
20094 Corsico (Milano)
Tel: [phone]
Fax: [phone]

Japan

Applied Power Japan Ltd.
1-1-11, Shimomae
Toda-shi
Saitama Pref.
Japan 335-0016
Tel: [phone]
Fax: [phone]

Mexico

ENERPAC Applied Power
Mexico S. de R.L. de C.V.
Avenida Principal
La Paz #100
Fracc. Industrial La Paz
42092 Pachuca, Hidalgo
Tel: [phone]

[phone]

Fax: [phone]

Toll Free in Mexico:

Tel: [phone]

The Netherlands, Belgium,
Luxembourg, Sweden, Denmark,
Norway, Finland

ENERPAC B.V.
Storkstraat 25
P. O. Box 269, 3900 AG Veenendaal
The Netherlands
Tel: [phone]
Fax: [phone]

[phone]

Russia and CIS
(excl. Caspian Sea Countries)

ENERPAC
Leninsky Prospect 95A
117313, Moscow, Russia.
Tel/Fax: [phone]
Tel/Fax: [phone]
Tel/Fax: [phone]
Mobil: [phone]

Singapore

Actuant Asia Pte. Ltd.
25 Serangoon North Ave. 5
#03-01 Keppel Digihub
Singapore 554914
Thomson Road
P. O. Box 114
Singapore 915704
Tel: [phone]

[phone]

Fax: [phone]

South Korea

ENERPAC
Applied Power Korea Ltd.
163-12 Dodang-Dong
Wonmi-Ku, Buchun-shi
Kyunggi-Do
Republic of Korea
Tel: [phone]
Fax: [phone]

Spain, Portugal

ENERPAC
C/San Jos

é

Artesano 8
Pol. Ind.
28108 Alcobendas
(Madrid) Spain
Tel: [phone]
Fax: [phone]

Middle East, Turkey
and Caspian Sea

ENERPAC Middle East FZE
P. O. Box 18004
Jebel Ali, Dubai
United Arab Emirates
Tel: [phone]
Fax: [phone]

United Kingdom, Ireland

ENERPAC Ltd., P.O. Box 33
New Romney, TN28 8QF
United Kingdom
Tel: [phone]
Fax: [phone]

USA, Latin America
and Caribbean

ENERPAC
P. O. Box 3241
6100 N. Baker Road
Milwaukee, WI 53209 USA
Tel: [phone]
Fax: [phone]

User inquiries:

[phone]

Distributor inquiries/orders:

[phone]

Technical Inquiries:

[e-mail]

10/30/02

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.50
REF.

.31

.500­.502