In order to evaluate the operating performance of a new type oil-film bearing oil S220,
a new test bearing was designed based on oil-film bearing test rig. The operating temperature of
S220 was tested through the thermocouples installed on a test bearing; the operating oil-film pressure
was tested through pressure transducers; and the operating oil-film thickness was tested through
displacement transducers. Meanwhile, M220 was also tested as a comparison, and both oils are
based on mineral oil. The results showed that all property indexes of the test rig can meet the
specified requirements and can guarantee the performance test of oil-film bearing oil; the operating
temperature of S220 is generally equal to that of M220, and both have the same operating stability.
The temperature property conforms to Formula (1) and the operating temperature under different
load cases can be predicted. Although oil-film pressure of M220 is a little more stable, the oil-film
pressure of S220 is similar to that of M220. Moreover, both have the similar oil-film thickness, and
the oil-film thickness of S220 is slightly smaller than that of M220, especially at the beginning of
operation. Ultimately, oil S220 is evaluated to be suitable for actual engineering application.