A New Design of the Universal Test Rig to Measure the Wear Characterizations of Polymer Acetal Gears (Spur, Helical, Bevel, and Worm)

Table 6

The wear phases for different types of polymer gears.

	Running-in phase	Linear phase	Rapid-wear phase
Acetal pair of spur gears	Duration from 0 to cycles weight loss 2.3 mg	Duration from to cycles weight loss 11 mg	Not found
Acetal pair of helical gears	Duration from 0 to cycles weight loss 4 mg	Duration from to cycles weight loss 14 mg	Duration from to cycles weight loss 26 mg
Acetal pair of bevel gears	Duration from 0 to cycles weight loss 7 mg	Duration from to cycles weight loss 16 mg	Duration from to cycles weight loss 29 mg
Acetal pair of worm gears	Duration from 0 to cycles weight loss 4.4 mg	Duration from to cycles weight loss 19 mg	Duration from to cycles weight loss 35 mg