INDUSTRIAL CASE STUDY|MECHANICAL ENGINEERING|METAL-CUTTING MACHINE TOOLS · BEARINGS
PILOT TRIAL REPORT, DAZ JSC, 2001
Internal grinder UFB-500: surface finish of parts restored without teardown
PRODUCTXADO compoundin the report — "XADO lubricant", applied to the rolling surfaces of bearings No. 4-46109
TEST OBJECTUFB-500 internal grinding machineinternal grinding (spindle) head · Yugoslavia
DOCUMENT TYPEPilot trial report
with signatures and seal
with signatures and seal
Key result
↓20-26%
micro-roughness of the ground surface, 1.5-1.9 → 1.2-1.4 µm
| EQUIPMENT | CONDITION AT START OF WORK | WHAT WAS MEASURED |
|---|---|---|
| UFB-500 internal grinding machine (Yugoslavia) | Built in 1980, twenty-first year in service at the plant | Micro-roughness of the internal surface of test rings |
Finish of the ground surface of the test rings
| CONDITION OF THE HEAD | SURFACE MICRO-ROUGHNESS OF THE RING | CHANGE |
|---|---|---|
| Before treatment (baseline machine) | 1.5 ÷ 1.9 µm | — |
| After treatment with the XADO compound | 1.2 ÷ 1.4 µm | lower by 20-26 % |
Rings d 50 / D 70 / l 50 mm, 38KhA steel, HRC 42...46; ground on one and the same machine at 8500 rpm before and after the treatment.
What the report recorded
The Chief Mechanic Department of DAZ JSC, together with the repair and machining shop, carried out a pilot trial "to establish the feasibility of using XADO lubricants for restoring the original parameters of metal-cutting equipment". A comparative analysis of the micro-roughness of the ground test rings revealed the following: on the baseline machine — 1.5 ÷ 1.9 µm; on the machine whose internal grinding head had been treated with the XADO lubricant — 1.2 ÷ 1.4 µm. The machine, built in 1980 and in its twenty-first year of service in production, began to produce a cleaner surface — without dismantling the head, replacing the bearings or stopping for repair.
The results refer to the UFB-500 internal grinding machine and to the stated conditions of grinding test rings made of 38KhA steel; on other equipment and under other operating modes the figures may differ. The original DAZ JSC report dated 28 May 2001, with signatures and seal, 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: