INDUSTRIAL CASE|METALLURGY · ALUMINA PRODUCTION|GEARBOX · GEAR DRIVE
TRIBOTECHNICAL TREATMENT REPORT — GEARBOX No. 401
Gearbox ZB-360Pm: less current to the drive, treated without disassembly
PRODUCTXADO tribotechnical compoundapplied by XADO technology to the running gearbox, without disassembly
TREATED UNITGearbox No. 401, type ZB-360Pmgear drive: wheel — pinion · bearings · electric drive
DOCUMENT TYPEReport signed by both parties
and sealed by the refinery
and sealed by the refinery
Key result
↓9.1%
current drawn by the gearbox electric drive, 550 → 500 A
| EQUIPMENT | CONDITION AND DUTY | WHAT WAS MONITORED |
|---|---|---|
| Gearbox No. 401, type ZB-360Pm | In service; treated under normal duty, without disassembly | Current drawn by the gearbox electric drive |
| Gear drive: wheel — pinion pair | 168 hours of operation after treatment, then taken out of service | Condition of the tooth working surfaces at the inspection teardown |
| Gearbox bearings | same | Radial play, condition of the surfaces |
Treatment results for gearbox No. 401
| PARAMETER | BEFORE TREATMENT | AFTER TREATMENT |
|---|---|---|
| Current drawn by the electric drive | 550 A | 500 A |
| Working surface of the wheel — pinion teeth | Traces of metal corrosion | Appearance of a smooth ground surface, traces of corrosion gone |
| Radial play of the bearings | Present | Eliminated; gear and bearing surfaces hardened |
The surfaces and bearings were examined at the inspection teardown after 168 hours of gearbox operation.
Conclusion of the report
The conclusion of the report states: «Use of XADO technology makes it possible to considerably extend the interval between repairs and to partly replace scheduled preventive repairs with tribotechnical treatment; reducing the friction coefficient to 0.007 units makes it possible to: extend oil service life by at least 3×; extend the service life of worn equipment; prevent wear and optimise clearances in new equipment». The treatment was carried out on the running gearbox, without disassembly and without stopping production. Over the 168 hours that followed, the drive current dropped, the teeth of the mating pair took on the appearance of a smooth ground surface, traces of corrosion disappeared, the radial play of the bearings was eliminated, and the noise of the running gearbox fell considerably.
The results refer to gearbox No. 401, type ZB-360Pm, of the Nikolaev Alumina Refinery, treated by XADO technology without disassembly; on other equipment and under different operating conditions the figures may differ. The original report dated 21.05.1999, signed by both parties and sealed, is published in full and available for download.
Current equivalent
- Revitalizant gel for gearboxesGearboxes · transmissions · gear drives
- Revitalizant gel for compressors and bearingsCompressors · bearings · spindles
How such units are treated: