MEL-7000 is a portable electronic device used to measure the capacitance between the inner and outer rings of bearings. The capacitance between the inner ring and the outer ring is a series connection of the capacitance between the outer ring raceway and the spherical rolling body, and the oil film formed between the spherical rolling body and the inner ring raceway. Therefore, after the test, MEL-7000 can explain the lubrication state of the bearing.
