SEW-Eurodrive

SEW-Eurodrive investigated the effectiveness of RVS Technology® gel in load tests. The tests were carried out using the company’s electric motors equipped with reduction gearboxes.

The tests examined the temperature and current of electric motors connected to four worm gear units when the gearboxes were operated at nominal load without lubrication oil. The purpose was to determine how the motors behave in emergency situations.

Two RVS-treated units were compared with two untreated units. RVS Technology® gel had a significant effect on the treated units. According to the report, treating the surfaces of the gearbox gear teeth can significantly extend service life (up to doubling it), provide potential savings through reduced oil change intervals, and even allow the use of lower-cost materials.

Main test results:

• In the tests, the treated gear units clearly demonstrated reliable operation under emergency conditions. After treatment, the surfaces of the gear teeth were coated, resulting in significantly improved operational reliability.

• Although a steel–brass friction pair is not optimal for RVS treatment, the reduction in temperature (up to 54 °C) and the difference observed in electrical current after treatment (up to 2.0 A, i.e. –65%) were evident.

• No signs of wear were observed in the units treated with RVS Technology® gel. In contrast, the untreated units showed clear signs of scuffing on the gear tooth surfaces and high bearing temperatures (temper colors).