Equation 9 differentiates the film forming behavior of various lubricants because it accounts for differences in and . Applying Equation 9 to the Table 1 values gives the relative EHL film thickness values shown in Table 2. Figure 1 is a graph of the Table 2 values.
All that is necessary for converting Table 2 to actual film thickness values in microns is to calculate the EHL film thickness for the gear set with a mineral oil at the baseline temperature of 80°C and baseline values of = 0.017246 and = 40.49869, and then multiplying the Table 2 values by the EHL film thickness obtained for the gear set at the baseline values. For example, EHL film thickness for an FZG C gear set with ISO VG 320 MIN at the baseline values is = 0.43376 µm. Multiplying Table 2 values by 0.43376 gives the Table 3 values. Figure 2 is a graph of the Table 3 values.
Influence of ISO VG