Technical Paper
An Examination and Comparison of the Maximum Film Temperature in a Journal Bearing for 13 Synthetic, Mineral, and Viscosity Index Enhanced Oils
1992-10-01
922343
An experimental investigation of the peak film temperatures for 13 different oils has been performed with a precision journal bearing test rig. This study examined the differences between mineral, synthetic and viscosity index enhanced oils with regards to peak oil film temperatures. The oils examined include: three mineral oils (1-ISO 68 and 2-ISO 32), eight synthetic oils (1-ISO 22, 6-ISO 32, 1-ISO 68) and two viscosity index enhanced oils (1-ISO 22 synthetic, 1-ISO 32 mineral). The synthetic oils included both Diester base and Polyalphaolefin base products. Data for each oil were obtained at 6000, 8000, 10800, 12000, and 14000 RPM (100, 133, 180, 200 and 233 Hz); for loads of 670, 1330, 2000, 2670 and 3340 N. These speeds and loads correspond to surface speeds between 16 m/s to 37 m/s and unit loading between 0.5 MPa and 2.6 MPa. A 50.8 mm diameter, 25.4 mm long bearing with the upper portion relieved was used for all tests.
