Development and design of a reliability test for a rolling bearing system of a clothes dryer

Abstract

This work focuses in the design of a reliability test for the roller bearing system in clothes dryers. Some modern clothes dryers feature roller bearing system, which serves as drum/ basket support and provides a sliding surface during machine’s operation. The proposed test is an accelerate life assessment based on temperature, load, spin speed, roller shaft’s misalignment and lint accumulation as stress factors. Results show that, assuming a Weibull distribution model, a 96.5% reliability is expected at ten years with a 90% confidence. The experiment includes forty samples tested during 1600 hours under stress and 9.6 million drum revolutions.