KSB RPH - Lubrication and Bearing Maintenance

Size Suction-side casing wear ring Discharge-side casing wear ring
Inner nominal
diameter
(rounded)
Clearance
(standard)
Minimum
clearance to
API 610
Inner nominal
diameter
(rounded)
Clearance
(standard)
Minimum
clearance to
API 610
[mm] [mm] [mm] [mm] [mm] [mm]
400-506 440 0,85
-0,1
0,73 440 0,85
-0,1
0,73
400-710 440 0,85
-0,1
0,73 500 0,85
-0,1
0,80
7.2.2.3 Cleaning filters
CAUTION
Insufficient inlet pressure due to clogged filter in the suction line
Damage to the pump!
▷ Monitor contamination of filter with suitable means (e.g. differential pressure
gauge).
▷ Clean filter at appropriate intervals.
7.2.3 Lubrication and lubricant change of rolling element bearings
DANGER
Excessive temperatures as a result of bearings running hot or defective bearing seals
Explosion hazard!
Fire hazard!
Damage to the pump set!
▷ Regularly check the condition of the lubricant.
7.2.3.1 Oil lubrication
The rolling element bearings are usually lubricated with mineral oil.
7.2.3.1.1 Intervals
Table 18: Oil change intervals
Temperature at the
bearing
First oil change All subsequent oil
changes
12)
up to 70 ℃ After 300 operating hours Every 8500 operating hours
70 °C - 80 °C After 300 operating hours Every 4200 operating hours
80 °C - 90 °C After 300 operating hours Every 2000 operating hours
7.2.3.1.2 Oil quality
Table 19: Oil quality
Designation Symbol to DIN
51502
Properties
CLP46 lubricating oil
to DIN 51517
or
HD 20W/20 SAE
□ Kinematic viscosity
at 40 °C
46±4 mm²/s
Flash point (to
Cleveland)
+175 ℃
12)
At least once a year
7 Servicing/Maintenance
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RPH