Ball disc type grease lubricated ball bearing oil film conductivity test bench and test method

The invention discloses a ball disc type grease lubricated ball bearing oil film conductivity test bench and test method. The test bench comprises a driving mechanism, a loading module, a ball cover mechanism and a ball disc test module. The ball disc test module simulates the working condition of a grease lubricated ball bearing, the loading module applies a load to the ball cover mechanism, and the driving mechanism drives the ball disc test module. The conductivity of a lubricating grease oil film is measured by introducing the resistivity of the oil film, so that the conductivity of the bearing lubricating grease is detected in real time. The calculation principle of the oil film resistivity of the lubricating grease oil film is as follows: a steel ball generates an oil film with a certain thickness due to hydrodynamic lubrication of elastic fluid under the conditions of a certain rotating speed and a certain load, the resistance of the oil film part is calculated by measuring the breakdown voltage and cu