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Thrust
Washing Wear Test
Material
Rotating Sample - Toughmet CX105
Stationary - AISI 8620 Case
Carburized to 60 to 64 RC, surface coated with Metalife system
Surface Roughness
Toughmet - 31.6 to 37.4 u" Ra
Steel - 10.7 to 12.6 u" Ra
Contact Area - .2 sq. inches
Velocity - 100
ft/min
Load - 20 lbs,
100 psi
PV Level - 10,000
Lubricant
Test l - Dry
Test 2 -
Mobilith SHC 460 grease
Temperature - 72ºF at the start
Test Duration - 20 hrs.
Test Procedure
Journal Bearing PV Limit Test
The test procedure was as follows:
- Wipe excess liquid from the Metalife coated steel samples
- Measure surface roughness, in u" Ra, on the Form Talysurf
- Install the bearing and shaft in the LFW 5 (Falex #5) Journal
bearing test apparatus
- Apply load and start the shaft rotating at 100 ft/min
- Run for 30 minutes and measure friction force and bearing
temperatures |
