Thomas L. Carter
A series of rolling-contact fatigue tests was conducted in a bench rig developed at the NACA Lewis laboratory. Four paraffin-base mineral oils of varying viscosity (at atmospheric pressure) were used as lubricants. Ball specimens were AISI M-1 tool steel (air melt). Test temperature was 100 degrees F, and a calculated Hertz compressive stress lever of 725,000 psi was maintained.
An Adobe Acrobat (PDF) file of the entire report: