Assembly and Operating Manual
Pneumatic Swivel Head type SRH
13
Date printed 30.09.11
7.1 Disassembling the rotary actuator
See illustrations in chapter 8
1. Remove all air and power lines
2. Undo the screw (item 35) and remove the screw (item 37) and the two stop covers.
Remove the domed cover (item 5).
3. Mark the installation position of the pinion (item 2 or 19) and the piston (item 24).
4. Disassemble the safety ring on the pinion (item 49).
5. With the media feed-through option, remove the flange (item 20) or the protective lid
(item 22)
6. Press the pinion out of the housing.
7.2 Replacing a shock absorber
The shock absorbers have a limited life span, depending on the stresses to which they are sub-
ject. Their function should therefore be checked regularly. A shock absorber is functioning cor-
rectly when the unit hits the end stops gently. The shock absorbers are specially tested and can
only be obtained from SCHUNK. When replacing a shock absorber proceed as follows, de-
pending on which option you have:
(See Figure 1, Figure 5 and Figure 6)
1. Undo the screws (item 102) and remove the stop cover (item 8/11).Remove the safety rings
(item 50) from the piston.
2. Remove the safety rings (item 50) from the piston.
3. Pull out the absorbers (item 54) and remove all the fitting disks from the bore.
4. Insert the new absorbers. Use as many fitting disks behind the absorber as are
needed to achieve the stipulated shock absorber projection (see table and illustra-
tions at the end of the chapter)!
5. Place fitting disks behind the safety rings until they can be installed without clearance.
6. Re-attach the stop cover (item 8/11) and secure it once more with the screws (item 102).
