Enerpac SC-1 User Manual

SAFETY FIRST

L1680
Rev. C
02/98

®

A UNIT OF APPLIED POWER INC.

Instruction Sheet

SC-1 Swing Clamps

IMPORTANT RECEIVING INSTRUCTIONS: Visually inspect all components for shipping dam­age. If any shipping damage is found, notify carrier at once. Shipping damage is NOT covered
by warranty. The carrier is responsible for all repair or replacement cost resulting from dam­age in shipment.

Carefully plan your system by selecting components designed to perform the intended opera­tion and which will adequately perform with existing equipment. Always check the product limi­tations regarding pressure ranges, load capacities and set-up requirements. The system oper­ating pressure must not exceed the pressure rating of the lowest rated component in the sys­tem. Read all CAUTIONS, WARNINGS and INSTRUCTIONS included with, or attached to,
each product. Follow all safety precautions to avoid personal injury or property damage during
the system operation. ENERPAC CANNOT BE RESPONSIBLE FOR DAMAGE OR INJURY
RESULTING FROM UNSAFE USE OF PRODUCT, LACK OF MAINTENANCE, OR INCOR­RECT PRODUCT AND SYSTEM APPLICATION. Contact ENERPAC when in doubt as to
safety precautions, or applications.

Description

Enerpac SC-1 swing clamps can be set for left swing,
right swing, or straight pull operations. Swing cylinders
rotate 90° during the first portion of the stroke, contin­uing without rotation for the final clamping stroke.

Swing cylinders can be operated as either single act­ing or double acting. SC-1 cylinders come with a
retract spring for single acting operation. A standard

clamp arm is supplied with cylinder.

Specifications

■ Operating Pressure: 3000 PSI maximum

■ Maximum Frequency: 40 Cycles/Minute

■ Swing Arc: 90°

■ Seal Material: Buna-N/Polyurethane/Molythane

STROKE Initial Clamping Total

1.00” 0.50 1.50”

Figure 1: SC-1 Swing Clamps

2

Accessories

■ Cylinder brackets

■ Buttons and toggle parts

■ SC1CN locknut

■ DCA-2 double clamp arm

Installation

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 require low­ering the maximum operation pressure so
that less clamping force is produced.

Tightening Clamp Arm to Cylinder

1. Back out the ball bearing plug located on
the side of the cylinder opposite of the
advance port. This will help to prevent possi­ble internal damage to the cylinder while
tightening the clamp arm to the plunger.

2. Place clamp arm in vise. DO NOT place
the body of the cylinder in the holding
device.

3. Tighten the bolt holding the arm to the
cylinder.

4. Retighten the ball bearing plug.

Setting Plunger Rotation

Swing cylinders are supplied with rotation
set to clockwise. Follow steps below to
change rotation.

1. Remove plug located opposite advance
port to access plunger guide ball. Remove
ball.

2. Turn plunger until selected groove is visi­ble. See Figure 4.

3. Replace ball, making sure it is seated in
the groove and reinstall plug.

WARNING

DO NOT exceed the values shown in Figure 2
or equipment damage and/or personal injury

could result.

Clamp Arm

Length

(Inches)

Maximum

Rated Pressure

(PSI)

Cylinder

Capacity (lbs)

@max. PSI

No clamp ★ 3000 2640

2 ★★ 3000 2164

3 3000 1960

4 3000 1740

5 2400 1200

6 2000 840

Figure 2: Clamp Arm Specifications

NOTE: Maximum recommended flow

rate with standard arm is 200 cubic inch­es per minute. When using longer clamp
arms, the flow rate should be reduced
and a V66-F flow control valve should be
used.

Figure 3: Clamp Arm Dimensions

★ For double arm clamping (DCA-2),
use half of straight pull capacity for each
side.

★★ Standard clamping arms supplied.
Longer arms indicated in chart can be
fabricated by the user. See Figure 3 for
dimensions.

3

Mounting Swing Clamp

Secure swing clamp to fixture using one of
the following methods:

■ Screw threaded housing into tapped hole
(1 7/8”-16 UN).

■ Bolt cylinder down using the 4 mounting
holes in the flange. Mounting holes are 0.40”
diameter.

■ Mount in a through-hole and secure with a
locknut (P/N SC1CN).

Operation

Connection for Single Acting

Connect pressure line to 1/4”-18 NPT port in
flange.

Connections for Double Acting

1. Remove plunger return spring.

2. Connect advance line to 1/4”-18NPT lower
side port or the 1/8-27NPT bottom port. If
using the bottom port, plug the lower side
port with a 1/4”-18NPT pipe plug.

Air Removal

1. Apply low hydraulic pressure (approxi­mately 10-20 PSI) to the system.

2. Loosen plug opposite advance port slight­ly to allow air to escape until hydraulic fluid
appears.

3. Tighten the plug to prevent further leak­age.

WARNING

WARNING

Figure 4: Plunger Rotation (Top View)

NEVER exceed maximum pressure rating of lowest rated component in your system. Maximum

pressure for SC-1 swing cylinder with standard clamp arm is 3000 PSI. When using custom

clamp arms over 4 inches long, the maximum pressure rating is LOWER. See Figure 2 for clamp

arm specifications. Exceeding rated pressure will result in component failure and may cause

equipment damage and/or personal injury.

If your swing cylinder requires repair work, contact a local ENERPAC authorized

service center.

NEVER operate a double-acting swing clamp unless BOTH ports are connected to the hydraulic

circuit. If one of the ports is left uncoupled, pressure will build up behind it when the swing

clamp is operated. This may lead to equipment damage and/or personal injury.

4

Australia

ENERPAC
Applied Power Australia, Ltd.
P.O. Box 261 Regents Park
Sydney, N.S.W. 2143
Tel: (61) (2) 9743 8988
Fax: (61) (2) 9743 8648

CIS

Applied Power Moscow
Leninsky Prospekt 95A
117313 Moscow, Russia
Tel: [phone]
Fax: [phone]

France, Switzerland,
Turkey, Greece, Africa,
Middle East

ENERPAC S.A.
B.P.200, Parc d'Activitiés
du Moulin de Massy
1 rue du Saule Trapu,
F-91882 Massy CEDEX
(Paris) France
Tel: [phone]
Fax: [phone]

Germany, Scandinavia,
Eastern Europe, Austria,
Switzerland

ENERPAC
Applied Power GmbH
P.O. Box 30 01 13
Mündelheimer Weg 51
40472 Düsseldorf 30
Germany
Tel: (49) (211) 47 14 90
Fax: (49) (211) 4714 940

Holland, Belgium,
and Luxemburg

ENERPAC B.V.
P.O. Box 269, Storkstraat 25
3900AG Veenendaal
Holland
Tel: (31) (318) 535911
Fax: (31) (318) 525613

Hong Kong

ENERPAC
Applied Power Asia PTE LTD.
Room No. 907, Workingberg
Commercial Building
41-47 Marble Road,
North Point
Tel: [phone]
Fax: [phone]

India

ENERPAC
Hydraulics (India) Pvt Ltd.
203 Vardhaman Chambers
Plot #84, Sector 17
Vashi, New Bombay 400 705
Maharashtra, India
Tel: [phone]
Fax: [phone]

Italy

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

Japan

Applied Power Japan LTD
10-17 Sasame Kita-cho
Toda-City
Saitama 335,
Japan
Tel: [phone]
Telex: J26275
Fax: [phone]

Mexico

ENERPAC
Applied Power Mexico
Av. Principal La Paz #100
Fracc. Industrial La Paz
42092 Pachuca, Hidalgo, Mexico
Tel: [phone]
Fax: [phone]

Singapore

Applied Power Asia PTE LTD.
47 Jalan Pemimpin #01-02 &
#01-03 Sin Cheong Building
Singapore 577200
Tel: [phone]
Fax: [phone]

United Kingdom, Ireland

ENERPAC Ltd. Unit 3
Colemeadow Road
North Moons Moat
Redditch, Worcester B98 9BP
England
Tel: [phone]
Fax: [phone]

United States, Canada,
Latin America and
Caribbean

ENERPAC
13000 West Silver Spring Drive
Butler, Wisconsin 53007, USA
Tel: [phone]
1-800-433-2766 (End User)
1-800-558-0530 (Distributor)
Fax: [phone]

Canada

Tel: [phone] (End User)
Tel: [phone] (Distributor)

Latin America and Caribbean

Tel: [phone] ext. 263
Fax: [phone]

All Enerpac products are guaranteed against defects in workmanship and materials for as long as you
own them. Under this guarantee, free repair or replacement will be made to your satisfaction.

For prompt service, contact your Authorized Enerpac Service Center or call toll free:

In U.S.A. 1-800-558-0530
In Canada 1-800-426-2284

PRINTED IN U.S.A.

R

South Korea

ENERPAC
Applied Power Korea Ltd.
163-12, Dodang-Dong
Wonmi-ku, Buchun-Shi,
Kyunggi-Do
Republic of Korea
Tel: (82) (32) 675 0836
Fax: (82) (32) 675 3002

Spain, Portugal

ENERPAC
Applied Power International, S.A.
Calle de la Imprenta, 7
Polígono Industrial
28100 Acobendas (Madrid)
Spain
Tel: [phone]
Fax: ( 34) 1 661 47 89