All field resultsMichigan Seamless Tube

Breaking a recurring bearing-replacement cycle.

Rotary-furnace bearings · Duravi GP Grease

BearingsReplacement interval
Rotary furnace shown in the Michigan Seamless Tube case study
Rotary-furnace application · source case photograph
Zero

reported replacements during the documented period

Previously: replacement every 3–4 weeks

Reported under the documented application conditions.

Equipment, test method + conditions
Application
Rotary-furnace bearings
Duravi product
Duravi GP Grease
Baseline / comparison
Previously: replacement every 3–4 weeks
Test method
Reported bearing-replacement history; supplementary 24-hour heat and water-emulsification tests.
Measured result
The case summary reports treatment beginning in November 2021, with no bearing replacements during the documented follow-up period.
Observation period
Reported follow-up after treatment began in November 2021.
Evidence type
Reported field application
Source
Duravi product line and field case studies · page 9
The challenge

The maintenance
problem.

Bearings reportedly needed replacement every 3–4 weeks.

The application

The case summary reports treatment beginning in November 2021, with no bearing replacements during the documented follow-up period.

What changed for the operator

The operator reported no replacements during the follow-up, after previously changing bearings every three to four weeks.

Additional test details

The source also reports a 24-hour, 650°F heat test with 5% grease loss and no baking or solidification, plus a 24-hour centrifugal-washer test with no reported washout or emulsification. These tests are distinct from the field replacement history.

Your application

Working on
similar equipment?

Share your equipment, operating conditions and current product to discuss whether this treatment is suitable.