1, sliding bearings can also be used to lubricate grease, grease in the choice should consider the following points:
(1)
bearing load, low speed, you should choose a small penetration of
grease, and vice versa to choose the cone into the degree of large. High-speed bearings used to tap the degree of small, good mechanical stability of the grease. It is important to note that the viscosity of the base oil of the grease is lower.
(2) the choice of grease drops generally higher than the operating
temperature of 20-30 ℃, continuous operation in the case of high
temperature, pay attention not to exceed the allowable use of grease
temperature range.
(3) sliding bearings in the water or wet environment work, should
choose good water resistance of calcium, aluminum or lithium grease.
(4) use a good adhesion of the grease.
2, the choice of grease for sliding bearings:
Load <1MPa, journal circumference speed 1m / s or less, the maximum
operating temperature of 75 ℃, the choice of 3 calcium base grease;
Load 1-6.5MPa, journal circumference speed 0.5-5m / s, the maximum
working temperature of 55 ℃, the choice of 2 calcium base grease;
Load> 6.5MPa, journal peripheral speed 0.5m / s or less, the
maximum operating temperature of 75 ℃, the choice of calcium 3-based
grease;
Load <6.5MPa, journal peripheral speed 0.5-5m / s, the maximum
operating temperature of 120 ℃, the choice of 2 lithium-based grease;
Load> 6.5MPa, journal peripheral speed 0.5m / s or less, the
maximum operating temperature of 110 ℃, the choice of calcium 2 -
sodium;
Load 1-6.5MPa, journal peripheral speed 1m / s below, the maximum
operating temperature of 50-100 ℃, the choice of 2 lithium-based grease;
Load> 5MPa journal peripheral speed 0.5m / s, the maximum operating
temperature of 60 ℃, the choice of No. 2 calendars grease;
In
the wet environment, the temperature of 75-120 ℃ under the conditions
should be considered with calcium - sodium grease grease. In the humid environment, the working temperature below 75 ℃, no 3 calcium base grease, aluminum grease can also be used. Working temperature of 110-120 ° C, the use of lithium grease or barium base grease. Concentration lubrication, the consistency to be smaller.
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