Enerpac WSC 72 Hoja De Instrucciones página 2

3.0 INSTALLATION
3.1 Mounting the Work Support
Mounting cavities must be prepared according to the specifications
shown on page 26 and 27. Use care when preparing the fixture.
Machine fixture bore holes accurately. To prevent leakage, provide
a fixture mounting surface roughness average (R a ) not to exceed
1,6 µm (63 µin.) Ensure that there are no exposed metal burrs where
the oil feed holes meet the cylinder cavity.
CAUTION: Thoroughly flush all fixture drill passages
to prevent debris from entering the cylinder during
operation.
Lubricate external cylinder o-rings prior to mounting the cylinder in
the cavity. Carefully install the cylinder until the metal ring (E)
contacts the counterbore face as shown in Figure 1. Torque work
support into mounting plate. See the table below for torque values.
Work Support Model
WFC /WSC 72
WFC /WSC 112
WFC /WSC 222
3.2 Mounting Options
For the mounting option using the open plate design (Figure 2,
page 26), care should be taken to prevent coolant or cutting fluids
from entering the vent hole.
The WFC/WSC 112 and 222 models have an external breather
vent in the body housing. If the breather vent is subjected to a
continuous coolant flood condition, the blind cavity design
(Figure 3, page 26) is recommended. The lower portion of the
mounting cavity should be vented to an area free of fluids and
contaminants to protect the breather vent.
4.0 MODIFICATIONS
4.1 "Air Purge" Work Supports (WFC/WSC 112, 222 only)
If the wiper area of the work support is exposed to coolant
flooding or fine machining debris, the work support should be
modified to become an "air purge" work support. An "air purge"
work support allows air to blow through the wiper and prevents
coolant and debris from entering the work support.
1. Only work supports utilizing a blind cavity design may be
modified to become "air purge" work supports. Connect an
air feed to the area labeled "P" (see figure 3, page 26).
2. NOTE: The air purge only requires between 5-15 psi (0,3-1,0
bar) air pressure.
SPECIFICATIONS
Model Oil Capacity
No.
cm
(in
WFC-72 0,66 (0.04)
WSC-72 0,16 (0.01)
WFC-112 0,98 (0.06))
WSC-112 0,16 (0.01)
WFC-222 3,28 (0.20)
WSC-222 0,16 (0.01)
* adjustable
Installation Torque
149-176 Nm (110-130 Ft-Lbs.)
190-217 Nm (140-160 Ft-Lbs.)
258-285 Nm (190-210 Ft-Lbs.)
Capacity
@ Max. bar/psi
3 kN
3 ) (lbs)
7 (1650)
11 (2500)
22 (5000)
4.2 "Air Spring" Work Supports (WSC 112, 222 only)
An "air spring" work support uses air, instead of a spring, to
maintain the support plunger in an extended position. An "air-
spring" work support will not retract the plunger. (Note: Only spring
advanced work supports can be modified to become "air spring"
work supports.) An "air spring" work support can offer greater
control over the force of the plunger against the workpiece. An "air
spring" work support can also provide more force against the
plunger than conventional spring advanced models.
1. Remove the contact bolt, adjustment screws (222 models
only) and spring from within the work support plunger.
2. After removing the spring, replace the contact bolt.
3. Only work supports utilizing a blind cavity design may be
modified to become "air purge" work supports. Connect an
air feed to the area labeled "P" (see figure 3, page 26).
4. Add a two-position manual air valve or a solenoid operated
air valve to the air supply line.
5. Use an air regulator (Enerpac RFL 102) to control air pressure.
Excessive air pressure may actually lift a work piece off of its
rest surface. The correct amount of air pressure will vary
depending on the size and weight of the workpiece and the
work support.
5.0 OPERATION
5.1 Spring Advanced Work Supports
1. WSC 222 only: Adjust the contact force between the work
support plunger and the workpiece.
a. Remove the plastic adjustment screw from within the top
of the plunger.
Support Plunger
Stroke
mm
(in)
9,7 (0.38)
9,7 (0.38)
11,9 (0.47)
4,4-14,5 (1.0-3.25)
2 2
E
Figure 1
Support Plunger Spring Force
N (lbs.)
Plunger Plunger
Extended Retracted
8,9 (2.0) 25,8 (5.8)
15,2 (3.4) 23,1 (5.2)
*
71,2-102,3 (16-23)
*