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:
1005272
Edition:
01.00 | 23/01/2017 | de - en
© SCHUNK GmbH & Co. KG
All rights reserved.
1 Intended use
If the product can no longer be fully opened or closed, a component part
may be damaged. The cause for this defect is often a collision. After a colli-
sion, the gripper fingers and base jaw may also be damaged.
2 Scope of Delivery
Designation
GWB
34
44
54
64
80
Spring [pcs.]
1
1
1
1
1
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!
Products that use spring force or have gripping force maintenance contain
parts that are under spring tension. This can cause components to move un-
expectedly when being dismantled, which may result in serious injuries.
• Carefully dismantle the product.
5 Tools/auxiliary tools
•
Hexagon socket wrench
•
Clamping device
6 Recommended lubricants
Lubricant point
Lubricant
Metallic sliding surfaces
Molykote BR 2 plus
All seals
Renolit HLT 2
Bores on the piston
Renolit HLT 2
7 Tightening torque
Item Designation
GWB
34
44
54
64
80
16
Screw [Nm]
0.68
3.1
3.1
6.1
10
18
Screw [Nm]
2.1
5.3
5.3
11
18
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
Remove screws (16) and separate covering housing (2) from the housing
(1).
Ø
Clamp gripper between "a" and cylinder piston (6) into a clamping device
in such a way that the screw (18) can still be loosened.
Ø
WARNING! The parts are under spring tension!
Carefully remove the screw (18) and the underlying sealing disk (24).
Slowly relieve the pressure on the springs.
Ø
Remove cylinder piston (6) and the springs (31) from the housing (1).
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, illustrated in gray in the graphic.
Ø
Insert springs (31) and cylinder piston (6) into the housing (1).
Ø
WARNING! The parts are under spring tension!
Carefully tighten screw (18) with the sealing disk (to body) (24) below it.
Ø
Connect the covering housing (2) with the housing (1) using the screws
(16).
Ø
Assemble gripper on the machine/automated system.
Ø
Secure all compressed air lines.
GWB 34-80
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
