I. Manual lubrication

This is the most primitive method, in the case of insufficient lubricant in the bearing, use the oiler to supply oil. But this method is difficult to maintain the oil quantity must be, because of negligence forget to refuel the danger is greater, usually only used for light load, low speed or intermittent movement of the occasion, the best operation, in the refueling hole on the set of dust cover or ball valve, and with felt, cotton, wool, etc. for filtering device.


Second, drip lubrication

Usually used for circumferential speed less than 4 ~ 5m / s light and medium load bearing, from the container through the hole, needle, valve, etc. to supply roughly quantitative lubricant, the most classic is the drip oil oil cup, drip oil amount with the lubricant viscosity, bearing clearance and oil supply hole location of different significant changes.

Third, oil ring lubrication

By hanging on the shaft and can rotate the ring will oil pool of lubricant to the bearing (only can be used for horizontal shaft lubrication method), suitable for shaft diameter greater than 50mm medium and high speed bearings, the oil ring is best seamless, bearing width and diameter ratio of less than 2, you can only use an oil ring, otherwise you need to use two oil ring.


Four, oil rope lubrication

Relying on the oil rope capillary and siphon effect of the oil cup lubricant lead to the bearing, mainly used for circumferential speed less than 4 ~ 5m / s light and medium load bearing, in addition to the oil rope in the whole process can play a role in filtering.

Five, oil pad lubrication

The use of oil cushion capillary effect, the oil pool in the lubricant coated to the surface of the shaft diameter, this method can make the friction surface is often kept clean, but the dust will also block the capillary holes caused by insufficient oil supply. Oil pad lubrication oil supply is usually only 1/20 of the oil lubrication.


Six, oil bath lubrication

This lubrication method is part of the bearing immersed in lubricating oil, commonly used in vertical shaft thrust bearings, and should not be used for horizontal shaft radial bearings.

Seven, splash lubrication

Rely on the oil tank in the rotating parts of the beat and splash up the lubricant supply bearing, suitable for higher speed bearings.


Eight, spray lubrication

The lubricant will be atomized after spraying in the friction surface lubrication method, applicable to high-speed bearings.

Nine, pressure lubrication

Relying on the pressure of the lubrication pump to the bearing oil supply, will flow from the bearing lubricant recovery to the oil pool in order to circulate the use of the largest amount of oil supply and the most stable lubrication method, suitable for high-speed, heavy-duty, important sliding bearings.


Ten, circulating oil lubrication

The filtered oil is transported to the bearing parts by oil pump, and the lubricating oil after passing through the bearing is filtered and cooled again and then used. As the circulating oil can take away a certain amount of heat, so that the bearing cooling, so this method is suitable for high speed bearing parts.

XI, jet lubrication

With an oil pump will be high-pressure oil through the nozzle shot to the bearing, shot into the bearing oil through the other end of the bearing into the oil tank. When the bearing rotates at high speed, the rolling body and keep frame also with quite high rotational speed so that the surrounding air to form airflow, with the general lubrication method is difficult to lubricate the oil to the bearing, then it must be high-pressure jetting method will be sprayed to the bearing lubricant, the position of the nozzle should be placed in the center of the inner ring and keep frame between.

Bearing lubrication is a continuous work, the lubricant replacement cycle based on the use of bearing conditions and different oil volume. In general, when used in a good environment with an operating temperature of 50°C or less and little dust, the oil should be replaced once a year, and when the oil temperature reaches 100°C, it should be replaced once in 3 months or less.