INDUSTRIAL CASE STUDY|MECHANICAL ENGINEERING|METAL-CUTTING MACHINE TOOLS · BEARINGS

IE A096PILOT TRIAL REPORT, DAZ JSC, 2001

Internal grinder UFB-500: surface finish of parts restored without teardown

The ground surface came out cleaner, the grinding head was not dismantled or repaired. UFB-500 internal grinding machine, DAZ JSC, Dnipropetrovsk. 20-26 %.

DAZ JSC, Dnipropetrovsk — Chief Mechanic Department together with the repair and machining shop · chief mechanic A. A. Zakhlenyuk · design engineer, category I, A. N. Tuchin

Dnipropetrovsk, Ukraine · pilot trial 17 Jan – 20 Apr 2001 · report dated 28 May 2001

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

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: Bearings

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