KSB RDL - Page 28

RDL
27
7.3.1 Bearings lubricated with grease
During assembly in our factory bearings receive a grease charge and after lubricating interval (number of hours of continuous
functioning) they must be lubricated to avoid metallic contact between rolling parts and also to protect them against corrosion
and wear.
Lubricating interval (Functioning hours)
II poles IV poles VI poles VIII poles
Bearing type
60 Hz
3500 rpm
50 Hz
2900 rpm
60 Hz
1750 rpm
50 Hz
1450 rpm
60 Hz
1160 rpm
50 Hz
950 rpm
60 Hz
880 rpm
50 Hz
730 rpm
Grease qty
per bearing
(g)
6307 4000 5000 7000 7500 8000 8500 9000 9500 10
6308 3500 4000 6000 6500 7000 7500 9000 9500 15
6310 3000 3500 5000 5500 6000 6500 8000 8500 25
6312 5500 6000 7000 7500 8000 8500 35
NU 314 6314 5000 5500 6500 7000 7500 8000 45
NU 316 6316 4000 4500 6000 6500 7000 7500 55
NU 318 6318 3300 4000 5500 6000 6500 7000 65
NU 320 6320 2500 3000 5000 5500 6000 6500 75
NU 322 6322 5000 5500 6000 6500 85
NU 324 6324 4500 5000 5500 6000 105
NU 326 6326 4000 4500 5000 5500 115
NU 328 6328 3000 3500 4000 4500 125
Table 3 – Lubricating interval and grease quantity as function of rotation.
Apply the correct grease in the indicated quantity through the grease nipple located in the upper part of the bearing housing,
acc. to defined intervals. An excessive quantity causes a harmful effect. Every 2 years bearings should be disassembled and
washed and all lubricant replaced.
We recommend use of lithium soap grease and do not mix with other types like sodium or calcium.
Oil
Manufacturer Grease
VG 68 VG 46
ATLANTIC Litholine 2 Eureka-68 Eureka-46
CASTROL Graxa Lm 2 Hyspin AWS-68 Hyspin AWS-46
ESSO Beacon 2 Oil for Turbine-68 Oil for Turbine-46
IPIRANGA Isaflex 2 Ipitur AW 68 Ipitur AW 46
MOBIL Mobil Grease 77 DTE-26 DTE-24
PETROBRÁS Lubrax GM A2 Marbrax TR 68 Marbrax TR 46
SHELL Alvania R2 Tellus 68 Tellus 46
TEXACO Marfak MP2 Regal 68 Regal 46
PROMAX BARDAHL
Bardahl General
Purpose Grease
Maxlub MA-20 Maxlub MA-15
Table 4 – Grease and oil specification
7.3.2 Bearings lubricated with oil (optional)
Bearing housings must be filled with mineral oil of good quality. Type ISO VG 68 for speeds below 3000 rpm and ISO VG 46 for
speed higher than 3000 rpm. See table 4. Correct level is controlled by a constant level oiler. Oil change must be done
according to the following:
1- 1
st
oil change after 300h of service.
2- Next change after additional 2000h of service.
3- Subsequent changes each 8000h of service or after 1 year of service (whichever comes first).