Replace Bearings; Checking The Gearbox For Leaks - Siemens MOTOX BA 2515 Operating Instructions Manual

Service and maintenance

8.3 Replace bearings

The oil quality must meet the gearbox lubricant requirements specified in the T 7300 table.
The Siemens warranty is otherwise null and void. We recommend the use of one of these
gearbox lubricants
requirements. It is possible that the recommended oils are removed or replaced by oils that
have been further developed at a later point in time. We recommend that you regularly check
as to whether the selected lubricating oil is still recommended by Siemens. Otherwise
change the product.
8.3 Replace bearings
The bearing service life depends greatly on the operating conditions and so cannot be
calculated reliably. In the operating conditions specified by the operator, bearing life can be
calculated and indicated on the rating plate. If no information is given, changes in vibration
and noise pattern can serve as an indicator that an immediate bearing replacement is
necessary.
8.4

Checking the gearbox for leaks

Note
Due to the inherent principle of operation, oil mist can escape from a breather valve or
labyrinth seal.
Oil or grease escaping in small quantities from the shaft sealing ring should be regarded as
normal during the running-in phase of 24 hours operating time.
If the quantities escaping are significant or leaking continues after the running-in phase, the
shaft sealing ring must be replaced to prevent consequential damage.
Table 8- 5
Status
Film of moisture
on the shaft
sealing ring
Leakage at the
shaft sealing ring
54
.
These gearbox oils are subject to constant testing and meet the specified
Description and measures
Description
Film of moisture as a
result of the inherent
principle of operation
(apparent leakage)
Identifiable small trickle,
formation of drops, also
after the running-in
phase
Measures
Remove using a clean
cloth and continue to
observe.
Replace the sealing
ring, determine the
possible cause of the
sealing ring failure and
rectify.
Operating Instructions, 10/2016, A5E38123453A/RS-AB
Notes
This does not represent a
fault; frequently, in the
course of operation, the
sealing ring dries off.
During the run-in period, the
shaft sealing ring beds into
the shaft. A visible track can
be seen on the shaft.
Optimum preconditions for a
perfect seal are obtained
after the run-in period.
BA 2515