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.