The selection of sliding bearing grease - bearing knowledge

1, sliding bearing is lubricated by grease to, when choosing grease should consider the following points: 1) When bearing load, low speed, you should choose small grease cone into the degree, on the other hand to choose large cone into the degrees. High-speed bearing choose cone into the degree of small, good mechanical stability of grease. Pay special attention to the lower the viscosity of base oil of the grease. 2) Choose the drop point of the grease generally higher than 20 - working temperature 30 ℃, at high temperature under the condition of continuous operation, be careful not to exceed the allowed to use the temperature range of the grease. 3) Sliding bearing in water or damp environment, should choose water resistance good calcium, aluminum or lithium base grease. 4) Has a good adhesion of grease. 2, sliding bearing grease choice: 1 - load load 6. 5 mpa, shaft neck circumference speed 0. 5 - 5 m/s, the highest working temperature of 55 ℃, choose 2 calcium base grease; Load> 6. 5 mpa, shaft neck circumference speed 0. Below 5 m/s, the highest working temperature 75 ℃, choose 3 calcium base grease; Load load> 6. 5 mpa, shaft neck circumference speed 0. Below 5 m/s, the highest working temperature 110 ℃, choose calcium - 2 Sodium based grease; Load 1 - 6. 5 mpa, shaft neck circumference speed below 1 m/s, the highest working temperature - 50 100 ℃, choose 2 lithium base grease; Zero load> 5 mpa shaft neck circumference speed. 5 m/s, the highest working temperature 60 ℃, choose 2 calender fat; In humid environment, the temperature is 75 - Under the condition of 120 ℃, should consider to use calcium - Sodium based grease grease. In damp environment, working temperature below 75 ℃, no 3 calcium base grease, can also be used aluminum base grease. Working temperature at 110 - 120 ℃, can use lithium base grease or barium base grease. Centralized lubrication, consistency to small. 3, sliding bearing grease lubrication cycle: casual work, is not important parts: shaft speed 200 r/min, the lubrication cycle 3 days. Discontinuous work: shaft speed 200 r/min, the lubrication cycle 1 days. Continuous work, operating temperature less than 40 ℃, the shaft speed 200 r/min, the lubrication cycle once per class. Continuous work, operating temperature - 40 100 ℃ : shaft speed 200 r/min, the lubrication cycle every second.