nord B 1050, Инструкция по эксплуатации и сборке

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4 Commissioning
B 1050 en-4419 63
Gear units Stages
Nominal gear ratio i
N
Lift-off speed
by to n
1
[rpm]
SK 5217 / SK 6217 2 6 8 499
SK 5217 / SK 6217 2 10 14 809
SK 5217 / SK 6217 2 16 22 1308
SK 7217 / SK 8217 2 6 8 451
SK 7217 / SK 8217 2 9 13 697
SK 7217 / SK 8217 2 16 20 1136
SK 9217 / SK 11217 2 6 8 352
SK 9217 / SK 11217 2 9 13 545
SK 9217 / SK 11217 2 16 21 887
Table 10: Back stop lift-off speeds SK 5..17 – SK 11..17
There is increased wear if the necessary lift-off speed is not reached. The service life of the back stop
bearing decreases. Contact NORD for further information.
4.10 Checking the gear unit
During commissioning of the gear unit a test run should be carried out in order to detect any problems
prior to continuous operation.
During a test run under full load, the gear unit should be checked for:
• Unusual noises, such as grinding, knocking or rubbing noises
• Unusual vibrations, oscillations or other movements
• Production of steam or smoke
After the test run, the gear unit should be checked for:
• Leaks
• Slippage of the shrink disks. To do this, remove the cover and check whether the marking specified
in Section 3.7.2 "Hollow shaft with shrink disc element (option: S)"indicates a movement of the gear
unit hollow shaft relative to the machine shaft. Then remount the cover as described in
Section 3.13 "Covering cap (Option: H, H66, FAN, MF.., MS…)".
Information
Shaft sealing rings are rubbing seals and have sealing lips made from an elastomer material. These
sealing lips are lubricated with a special grease at the factory. This reduces the wear due to their
function and ensures a long service life. An oil film in the region of the rubbing sealing lip is therefore
normal and is not due to leakage.
Information
Taconite seals have a grease filling to seal the gear unit against dirt and other contaminants. During
continuous operation of the gear unit and the associated heating, grease may drip from the area of
the Taconite seal. This is normal and is not due to a leak.