Siemens SIMOTICS XP 1MB155, Руководство по эксплуатации, Страница: 125 / 152

Maintenance
9.2 Corrective Maintenance
1MB155 / 1MB555
Operating Instructions, 03/2018, A5E41926185A
123
9.2.4 Shaft sealing, mounting dimension "L"
Shaft ∅
mm
x
mm
L
mm
Gamma ring
15 ... 25 6 8
30 ... 45 6.5 8.5
50 ... 100 7.5 9.5
Shaft ∅
mm
L
mm
V ring with protective cap
40 ... 65 11
70 ... 100 13.5
Make sure the sealing surface is free of dirt and damage.
Lightly grease the sealing lips.
9.2.5 Insulated roller bearings
If insulated rolling bearings are fitted, use insulated rolling bearings of the same type as
spare parts. This will prevent any bearing damage being caused by bearing currents.
9.2.6 O-ring seal
If O-ring seals are present, you should check that they are in perfect condition and that the
O-ring seals are properly seated in the grooves between the components. Replace damaged
O-ring seals.
O-ring seals can be present on the following components, for instance:
● Adapters, tapers
● Entries, glands
● Bearing seals
● End shield seals
● Terminal box sealing
● etc.