CASE SERIES|RAILWAYS|DIESEL LOCOMOTIVES · BODY BALL SUPPORTS
UNIT TREATMENT PASSPORTS UNDER XADO TECHNOLOGY · 2002-2003
series of 3 acts
ChME3 ball supports: clearance to gauge smaller, on the control one — larger
PRODUCTXADO greases“restorative” and “protective” · three injections of 0.33 kg per unit, by grease gun over the standard ZhRO grease
TEST OBJECTBody ball supports
of ChME3 shunting locomotivesspherical support washer · locomotive works No. 1736, No. 3825, No. 7218 of the same depot
of ChME3 shunting locomotivesspherical support washer · locomotive works No. 1736, No. 3825, No. 7218 of the same depot
DOCUMENT TYPEUnit treatment passports
under XADO technologysigned by a XADO representative and three depot officials, two stamps
under XADO technologysigned by a XADO representative and three depot officials, two stamps
What recurred on every locomotive
↓0.04-0.07mm
clearance to gauge on the treated supports, single maximum 0.65 mm
↑0.08-0.1mm
clearance on the control support without XADO, 0.3-0.32 → 0.38-0.42 mm
| LOCOMOTIVE | BODY SUPPORTS, LEFT SIDE | MILEAGE AFTER TREATMENT | MEASUREMENTS |
|---|---|---|---|
| ChME3 works No. 1736 | Front and rear — treated | 55 542 km | 18.09.2003 |
| ChME3 works No. 3825 | Front and rear — treated | 55 380 km | 24.10.2003 |
| ChME3 works No. 7218 | Front — treated; rear left as control, without XADO grease | 54 457 km | 02.12.2003 |
Clearance to the R110 gauge — before treatment and after mileage
| LOCOMOTIVE | BODY SUPPORT | BEFORE TREATMENT, mm | AFTER MILEAGE, mm |
|---|---|---|---|
| ChME3 No. 1736 | Front left (post No. 1) | 0.9-0.1 | 0.83-0.06 |
| ChME3 No. 1736 | Rear left (post No. 4) | 0.22-0.25 | 0.16-0.20 |
| ChME3 No. 3825 | Front left | 0.2-0.22 | 0.14-0.18 |
| ChME3 No. 3825 | Rear left | 0.1-0.12 | 0.06-0.07 |
| ChME3 No. 7218 | Front left | 1.45-1.5 | 0.8-0.85 |
| ChME3 No. 7218 | Rear left — control, without XADO grease | 0.3-0.32 | 0.38-0.42 |
Clearance between the R110 ± 0.1 mm gauge and the working surface of the spherical washer; the range is the spread across measuring points. The control support ran the same mileage on the same machine.
Conclusion of the depot commission
The commission of the Dnipropetrovsk depot recorded the same thing in three passports: after the XADO greases were introduced and a mileage of over 54 000 km was run, the clearances between the gauge and the working surface of the spherical support washer decreased, while "the working surfaces of the ball supports acquired the look of a smooth polished surface, the traces of micro-damage present on the working surfaces disappeared". The supports went into service already worn: on locomotive No. 7218 the clearance reached 1.5 mm, and after the mileage it was 0.8-0.85 mm. On the same machine the rear left support was left as a control, without XADO grease: over the same mileage its clearance, on the contrary, grew by 0.08-0.1 mm — the metal kept wearing away exactly where XADO was not introduced. According to the conclusions of the certificates, this "confirms the effectiveness of using XADO greases for the purpose of eliminating wear of the body ball supports and makes it possible to increase the service life of these units by 1.5 - 2×".
The results relate to the body ball supports of ChME3 shunting locomotives operated by the Dnipropetrovsk locomotive depot; on other units and under other operating conditions the figures may differ. The original treatment passports with signatures and stamps are published in full and available for download.
Current equivalent
Bearing assemblies on consistent grease, ball joints and friction pairs — where there is no oil bath to dose a gel into.