Pump 22NDS: a bearing written off for wear returned to service

The written-off bearing went back on the pump, temperature and noise settled, it ran without overheating. Ukraine · 2001. 5 months.

Dniprovska Water Supply Station, Kyivvodokanal municipal utility · approved by the station's chief engineer V. A. Kostiuk; for the customer — pumping station manager A. N. Fursa and head of the chief mechanic department A. I. Rachenko; work performed by XADO-Kyiv JSC

Kyiv, Ukraine · treatment 05.10.2000 · act 05.03.2001 · five months of service under observation

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

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22NDS water pump, type 3542 bearing	Removed as withdrawn from service due to exhausted service life; lubricant — Litol grease	Temperature and noise behaviour of the bearing, operation without overheating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 The unit in question is a double-row self-aligning radial-thrust roller bearing of type 3542, previously removed as withdrawn from service with its life exhausted: a unit deemed unfit and due for replacement returned to work and completed five months of regular service by the date the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: Bearings Pump

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