41 / 49Festo 7DSBGa_en
4.6 Repairing the ISO standard cylinder DSBG-...-A6
4.6.1 Requirements
– Preparatory work has been completed ( Chapter 4.1 on page 21).
– Visual inspection has been performed ( Chapter 4.2 on page 22).
4.6.2 Validity
This chapter applies to the repair of the following versions of the ISO cylinder:
– DSBG-...-A6 / T1-A6 / T3-A6 / T4-A6
The different versions and features of the ISO cylinder are explained in Chapter 2.3 on page 10.
The following repair steps describe and show the ISO cylinder with single-ended piston rod.
Differences in the ISO standard cylinder with through piston rod (DSBG-...-T):
• Note the differences illustrated in the component overview (Chapter 3.4 on page 19).
• Take into consideration the following for the repair steps:
– Instead of threaded coupling: Rear piston rod (Item 30 in the component overview)
– Instead of end cap: Rear bearing cap (Item 33 in the component overview)
– Also replace the scraper ring in the rear bearing cap.
4.6.3 Structure of the bearing cap
The bearing and end caps of the various sizes and versions differ and can differ from the illustrations shown in the
following. Before each repair, the parts lists of the online spare parts catalogue on the Festo website must be used to
determine the precise type of bearing and end cap and must be taken into consideration in the repair
( www.festo.com/spareparts).
1
2
3
4
5
7
6
aA
8
aJ
9
Illustrated: DSBG-32-...-T3-A6
1 Bearing cap
2 Holding disc (only DSBG-32 ... 63) /
Cushioning element (only DSBG-160 / 200; not
illustrated)
3 Buffer seal (only DSBG-...-PPV / PPS)
4 O-ring
5 Scraper ring
6 O-ring
7 Insert sleeve
8 Distance sleeve
9 Circlip
aJ Scraper
aA DSBG-...-A6 / T3-A6: Bearing (plastic), interchangeable.
Not illustrated:
DSBG-...-T1-A6 / T4-A6: Bearing (metal),
not interchangeable;
DSBG-160 / 200-...-T1-A6 / T4-A6: 2-piece bearing
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