NORD Drivesystems B2000 - Manual (Page 38)

5. Service and maintenance
-38- B2000-GB-0413 www.nord.com
Check the cooling coil for deposits
The inner surface of the cooling coil must be checked for deposits, as in case of severe deposits
(fouling) the dissipation of heat is no longer guaranteed. In this case, the cooling coil must be
cleaned. If a chemical cleaner is used, it must be ensured that the cleaning agent does not
attack the material of the cooling coil (Cu pipe and yellow brass fittings)
Replacing the shaft sealing ring
Shaft sealing rings are rubbing seals made from an elastomer material and according to their
principle are subject to natural wear. The wearing life of shaft sealing rings depends on many
factors and cannot be calculated in advance. Once the shaft sealing ring has reached the end of
its service life, the oil film in the region of the sealing lip increases and a measurable leakage
with dripping oil occurs. The shaft sealing ring must then be replaced. To reduce the risk of
leaks due to worn shaft sealing rings we recommend that as a precaution, the shaft sealing rings
are replaced after every 25,000 operating hours or every 5 years. The space between the
sealing lip and the protective lip must be filled approximately 50% with grease on fitting
(recommended grease: PETAMO GHY 133N). Take care that after fitting, the new shaft sealing
ring does not run in the old wear track.
Re-lubricating bearings
For bearings which are not oil-lubricated and whose holes are completely above the oil level,
replace the roller bearing grease (recommended grease: PETAMO GHY 133N). Please contact
the NORD service department.
[L] [L]
 6.1 M1 M2 M3 M4 M5 M6  6.1 M1 M2 M3 M4 M5 M6
SK0 0,13 0,22 0,13 0,22 0,13 0,13 SK0 F 0,13 0,22 0,13 0,22 0,13 0,13
SK01 0,22 0,38 0,22 0,38 0,22 0,22 SK01 F 0,22 0,38 0,22 0,38 0,22 0,22
SK20 0,55 1,00 0,55 1,00 0,55 0,55 SK20 F 0,35 0,60 0,35 0,60 0,35 0,35
SK25 0,50 0,90 0,50 0,90 0,50 0,50 SK25 F 0,50 0,90 0,50 0,90 0,50 0,50
SK30 0,80 1,40 0,70 1,40 0,70 0,70 SK30 F 0,80 1,40 0,70 1,10 0,70 0,70
SK33 0,80 1,60 1,00 1,60 0,80 1,00 SK33 F 1,00 1,60 1,00 1,60 0,80 1,00
SK000 0,24 0,41 0,24 0,41 0,24 0,24 SK000 F 0,24 0,41 0,24 0,41 0,24 0,24
SK010 0,38 0,60 0,38 0,60 0,38 0,38 SK010 F 0,38 0,60 0,38 0,60 0,38 0,38
SK200 0,80 1,30 0,80 1,30 0,80 0,80 SK200 F 0,60 1,04 0,60 1,04 0,60 0,60
SK250 1,20 1,50 1,40 1,50 1,40 1,40 SK250 F 1,40 1,50 1,40 1,50 1,40 1,40
SK300 1,40 1,50 1,40 1,50 1,40 1,40 SK300 F 1,40 1,50 1,40 1,50 1,40 1,40
SK330 1,50 1,58 1,50 1,58 1,50 1,50 SK330 F 2,00 1,58 1,50 2,80 1,50 1,50