时间:2024-01-03
The affirmative answer to the question of whether smooth fat can be used immeasurably is not possible. As a result of too much use of smooth grease, is a lot of harm to the bearing.
Smooth grease has a very good effect on the bearing, its adhesion, wear resistance, temperature resistance, rust resistance and smoothness are good, can improve high temperature oxidation resistance, delay aging, can dissolve carbon, avoid metal debris and grease coalescence, improve the mechanical wear resistance, pressure resistance and corrosion resistance.
However, the more smooth grease filling amount, the greater the friction torque. For the same amount of filling, the friction torque of sealed bearings is greater than that of open bearings. After the smooth grease filling amount is equal to 60% of the bearing internal space volume, the friction torque no longer increases significantly. This is due to the open bearings in the large part of the smooth grease has been extruded, and sealed bearings in the smooth grease has been lost.
With the increase of smooth grease filling amount, the temperature rise of the bearing is improved in a straight line. With the same filling amount, the temperature rise of the sealed bearing is higher than that of the open bearing. It is generally believed that the smooth grease filling amount of sealed rolling bearing should not exceed 50% of the internal space at most.
Generally speaking, the smooth scheme of the bearing is based on the time. Equipment suppliers usually make smooth plans based on operating time. Also, equipment suppliers often participate in guidance on the amount of smooth oil in their maintenance programs. For the staff, it is very common to change the smooth oil for a short period of time, and the smooth fat is often added too much.