Table 1 Lubrication media of different lubrication states.

From: Lubrication state identification of vibration time-frequency characteristics based on CWT and CNN

Number

Lubricating medium

lubrication states

1

10 ml Lubricant

NL(normal lubrication)

2

5 ml Water + 5 ml Lubricant, Stir well

IL(insufficient lubrication)

3

2 g 100 Mesh ferromagnetic particles + 10 ml Lubricating oil, Mixed evenly

LC(lubricant contamination)