With the continuous development of social economy, many new and high technologies are constantly appearing in people's vision, which is not only conducive to the development of economic society, but also brings great convenience to people's life and production. Food machinery bearing, as a new type of high performance bearing, is widely used in practical applications due to its advantages of no pollution, no friction, small loss and long service life.

Bearing bad lubrication is the main factor causing food machinery equipment failure in advance, in order to solve the problem of bearing positioning, koyo bearing pressure and shaft grinding mill with strong positioning accuracy, the selection of lubricating oil, lubricating oil pollution causes of bearing failure is analyzed, and corresponding preventive measures are put forward, in order to improve the service life of equipment.