PRODUCTION CASE|FOOD INDUSTRY|OVENS · BEARINGS
PILOT TREATMENT ACT OF 17.04.2002
Oven bearings up to 190 °C: clearance reduced, flushing eliminated
PRODUCTXADO-250 heat-resistant greasetreatment by XADO technology, performed 26.02.2002
TREATED OBJECTIndustrial oven No. 1 of the bakerytwo No. 306 radial ball bearings in the conveyor shaft supports
DOCUMENT TYPECompany act
with signatures and seal
with signatures and seal
Key results
↓0.01mm
radial clearance in each of the two bearings, measured after 480 h of operation
↑2.9-3.6×
maintenance interval of the unit, 100-120 → 350-360 h
↓60%
grease consumption, 100 → 40 % of the previous volume
| UNIT AND INITIAL CONDITION | OPERATING CONDITIONS | WHAT WAS MEASURED |
|---|---|---|
| Oven No. 1, conveyor shaft supports — two No. 306 bearings | Temperature 160-190 °C, humidity above 75 % — steam released during bread baking | Radial clearance, condition of the working surfaces |
| Standard grease before treatment — industrial oil mixed with graphite, previously LITOL-24 | Bearing service life 6-8 months, weekly maintenance | Maintenance interval, grease consumption |
Oven bearing unit: before treatment and after 480 hours on XADO-250
| PARAMETER | BEFORE TREATMENT | AFTER TREATMENT |
|---|---|---|
| Radial clearance of the bearing | Intensive wear of the working surfaces | Reduced by 0.01 mm in each of the two bearings |
| Maintenance of the unit | Removal of old grease, flushing and packing of a new portion every 100-120 h — weekly | Grease top-up once every 350-360 h — once in 3 weeks; flushing and replacement eliminated |
| Grease consumption | 100 % — industrial oil mixed with graphite | No more than 40 % of the previous amount |
| Condition of the working surfaces | Corrosion, residues of coked grease | Surfaces cleaned of corrosion and residues of the standard grease, no coking |
Measurements under standard oven conditions: temperature 160-190 °C, humidity above 75 %.
Conclusion of the act
Before treatment the unit worked in heat and steam: the standard grease coked, the working surfaces corroded, the bearing lasted 6-8 months and required flushing every week. The commission of Palianitsa LLC recorded: a detailed analysis of the results of treating the bearings with XADO-250 heat-resistant grease gives grounds to conclude that the use of this grease for bearings of units operating in similar conditions will make it possible to protect them from the effects of an aggressive environment, to restore worn friction surfaces and to increase service life by at least 3×. At present the remaining bearing units of the bakery's ovens and electric motors are being transferred step by step to XADO heat-resistant greases.
The results relate to No. 306 bearings in the conveyor shaft supports of a bakery oven operating at 160-190 °C and humidity above 75 %; on other units and under other conditions the figures may differ. The treatment was performed by XADO LLC, the act was approved by the director of Palianitsa LLC and signed by the shop mechanic. The original act 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: