FIELD CASE STUDY|WATER SUPPLY|PUMPS · BEARINGS
ACT ON THE RESTORATION OF A 22NDS PUMP BEARING
Pump 22NDS: a bearing written off for wear returned to service
PRODUCTXADO RVSrepair-and-restoration compounds of the XADO technology
TREATED UNIT22NDS water pumpdouble-row self-aligning radial-thrust roller bearing, type 3542
DOCUMENT TYPEAct on the restoration of the bearing
signed and sealed by the station
signed and sealed by the station
Key result
↓5months
regular service of the bearing without overheating, 05.10.2000 → 05.03.2001
| UNIT | CONDITION AT THE START OF WORK | WHAT WAS RECORDED |
|---|---|---|
| 22NDS water pump, type 3542 bearing | Removed as withdrawn from service due to exhausted service life; lubricant — Litol grease | Temperature and noise behaviour of the bearing, operation without overheating |
The pump bearing before and after treatment
| PARAMETER | BEFORE TREATMENT | AFTER TREATMENT |
|---|---|---|
| Serviceability of the unit | Service life exhausted, bearing removed from the pump | Restored with XADO RVS compounds and returned to service |
| Temperature and noise behaviour | Disturbed | Restored within five hours of pump operation |
| Further operation | The unit was due for replacement | Five months of regular service without overheating |
The behaviour was assessed from the pump's actual operation: the act gives no instrument measurements of temperature or noise.
Conclusion of the act
The Dniprovska Water Supply Station of the Kyivvodokanal municipal utility recorded in the act: «After the bearing was treated with XADO compounds, the temperature and noise behaviour were restored within five hours of pump operation. To date the aforementioned bearing has been running without overheating in regular service». The unit in question is a double-row self-aligning radial-thrust roller bearing of type 3542, previously removed as withdrawn from service with its life exhausted: a unit deemed unfit and due for replacement returned to work and completed five months of regular service by the date the act was signed. For the pumping station this means a bearing replacement that never had to happen and a machine that stayed on line.
The results relate to a type 3542 roller bearing of a 22NDS water pump under the conditions of the Dniprovska Water Supply Station; on other units and duty cycles the figures may differ. The original act with signatures and seal is published in full and available for download. RVS is an obsolete XADO designation for zero-generation compounds; the current generation of products is revitalizants.
Current equivalent
- Revitalizant gel for compressors and bearingsCompressors · bearings · spindles
- Revitalizant gel for hydraulic systemsHydraulics · pumps · hydraulic motors
How such units are treated: