INDUSTRIAL CASE STUDY|MUNICIPAL UTILITIES|AIR BLOWER · BEARINGS
REPORT OF THE YALTA WASTEWATER TREATMENT PLANT
TV-176/1.6 air blower: bearing play in the blower and in the motor decreased
PRODUCTXADO revitalizantstreatment of the bearing assemblies of the blower and the electric motor, performed by ChPKP Rigonda
TEST OBJECTTV-176/1.6 air blower unitcapacity 1000 m³/h · A-113-2 drive, 320 kW · 2314 bearings in an oil bath, 3222 and 222 bearings on grease
DOCUMENT TYPEReport of PPVKKh YuBK
with signatures and the enterprise seal
with signatures and the enterprise seal
Key results
↓39-67%
radial play of the blower bearings, 0.18-0.28 → 0.06-0.17 mm
↓2.7×
radial play of the electric motor bearing, 0.16 → 0.06 mm
| EQUIPMENT | BEARING HOURS BEFORE TREATMENT | WHAT WAS MEASURED |
|---|---|---|
| TV-176/1.6 air blower unit, 1000 m³/h | 7500 h against an average service life to replacement of 8000 h — 94 % used up | radial play of the front and rear bearings (2314, oil bath) |
| A-113-2 electric motor, 320 kW | 3500 h against an average service life to replacement of 5000 h — 70 % used up | radial play of the front bearing (3222 and 222, grease) |
Radial bearing play — before treatment and after 450 hours of operation
| ASSEMBLY | PLAY BEFORE | PLAY AFTER 450 H | REDUCTION |
|---|---|---|---|
| TV-176/1.6 unit, front bearing | 0.28 mm | 0.17 mm | 0.11 mm · 39 % |
| TV-176/1.6 unit, rear bearing | 0.18 mm | 0.06 mm | 0.12 mm · 67 % |
| A-113-2 electric motor, front bearing | 0.16 mm | 0.06 mm | 0.10 mm · 62.5 % |
Measurements were taken before the treatment on 14.09.2004 and repeated after 450 hours of unit operation.
Report conclusion
The Production Enterprise of Water Supply and Sewerage of the Southern Coast of Crimea states: “As a result of applying XADO technology, the play in the bearing assemblies decreased by 0.1 mm on average, which indicates the restoration of their geometric dimensions and, accordingly, an increase in service life.” The work was not done on a new assembly: the blower bearings had run 7500 hours out of the 8000 accepted at the enterprise as the average life to replacement — the unit had come close to a scheduled bearing replacement. Over 450 hours of operation after the treatment, the play decreased on all three bearings, both in the oil bath of the blower and on the grease-lubricated motor: the clearance was restored regardless of how the assembly is lubricated.
The results relate to the TV-176/1.6 air blower unit with the A-113-2 electric motor at the Yalta wastewater treatment plant; on other equipment and under different operating conditions the figures may differ. The original report with the signatures and seal of the enterprise is published in full and available for download.
Current equivalent
Revitalizant gel for compressors and bearings →
Piston, screw and centrifugal compressors; rolling and sliding bearings running in an oil bath; machine-tool spindle units and slideways.
How such units are treated: