Copyright
This manual remains the copyrighted property of SCHUNK GmbH & Co. KG. It
is solely supplied to our customers and operators of our products and forms
part of the product. This documentation may not be duplicated or made ac-
cessible to third parties, in particular competitive companies, without our
prior permission.
Technical changes
We reserve the right to make alterations for the purpose of technical im-
provement.
Document number:
1005289
Edition:
00.00 | 23/01/2017 | de - en
© SCHUNK GmbH & Co. KG
All rights reserved.
1 Intended use
If the gripping force without attached compressed air decreases, the spring
needs to be changed and the product tested for wear.
2 Scope of Delivery
Designation
PWG 65-230
65
90
130
170
230
Compression spring [pcs.]
2
2
2
2
2
Cylindrical pin [pcs.]
2
2
2
2
2
Complete sealing kit [pcs.]
1
1
1
1
1
3 Applicable documents
•
Catalog data sheet of the product *
•
Assembly and operating manual of the product *
The documents marked with an asterisk (*) can be downloaded on our
homepage
www.schunk.com
.
4 Notes on particular risks
WARNING
Risk of injury due to sudden movements!
If the energy supply is switched on or if residual energy is still present in the
system, this can cause components to move unexpectedly, which may res-
ult in serious injuries.
• Switch off energy supply and secure against re-connection.
• Ensure that no residual energy remains in the system.
WARNING
Risk of injury due to spring forces!
In the case of a defect, parts may be under spring tension and could be
ejected during dismantling and cause injury.
• Before dismantling, clamp the gripper between position "A" and "B"
into a clamping device. Make sure that the cover (2) is also clamped.
• Carefully dismantle the grippers.
5 Tools/auxiliary tools
•
Hexagon socket wrench
•
Safety ring pliers
•
Clamping device
6 Recommended lubricants
Lubricant point
Lubricant
Metallic sliding surfaces
microGLEIT GP 360
All seals
Renolit HLT 2
Bores on the piston
Renolit HLT 2
7 Tightening torque
Item Designation
PWG 65-230
65
90
130
170
230
20 Screw [Nm]
-
-
-
10
25
22 Set-screw [Nm]
1.2
3.1
10
-
-
23 Screw [Nm]
2.1
11
43
85
150
24 Screw [Nm]
2.1
11
43
85
150
25 Screw [Nm]
1.2
3.1
10
25
49
8 Threadlocker
If not stated otherwise, screws can be secured using Loctite 243 or a similar
adhesive.
9 Changing the springs
Dismantling
Ø
Remove all compressed air lines.
Ø
Disassemble gripper from the machine/automated system.
Ø
Unscrew and remove the screws (25) and remove the plate (6).
Ø
WARNING! The housing (1), cover (2) and piston (3) are under spring tension
.
Clamp the housing and cover between "A" and "B" into a clamping device.
Ø
Unscrew the screws (22). (With PWG 170 and 230, also unscrew the
screws (20)). Unclamp slowly.
Ø
Clamp again between "A" and the bottom of the piston (3).
Ø
Secure screw 23 against twisting and carefully loosen screw 24. Unclamp
slowly.
Ø
Remove piston (3) and springs (15). Mark the installation position of the
piston.
Assembly
When assembling, use the parts from the spare part package.
Ø
Clean all parts thoroughly, check for damage and wear and grease with a
lint-free cloth or brush.
Ø
If necessary replace seals shown in gray in the picture.
Ø
Insert piston (3) and springs (15) into the housing (1).
Ø
Clamp the housing between "A" and the piston into a clamping device.
Ø
Secure screw 23 against twisting and screw in screw 24. Carefully open
clamping device
Ø
Place cover (2) on and screw in the screws (22). (With PWG 170 and 230,
also screw in the screws (20)).
Ø
Fasten screws (23).
Ø
Fasten plate (6) with screws (25).
Ø
Assemble gripper on the machine/automated system.
Ø
Secure all compressed air lines.
PWG 65-230
Spring spare parts package
Repair Instructions
SCHUNK GmbH & Co. KG | Spann- und Greiftechnik
D-74348 Lauffen/Neckar | Bahnhofstr. 106 – 134
Tel. +49-7133-103-0 | Fax +49-7133-103-2399
[email protected] | www.schunk.com
