How to clean the imported bearings?

     Bearings hardened by soft dry oil or rust-proof paste should be immersed in hot oil of 100-200 ° C. Clamp the bearing with pliers and brush the oil on the bearing with a brush. The soft dry oil or rust-proof paste is melted when heated to 100-200 ° C, and is easily washed out from the bearing hole. Occasionally, the bearing should be shaken several times in the oil. Oil stains will also flow away from the loopholes (the rollers, the bead frame, the inner ring and the outer ring should also be disengaged when washing). Soak the bearing in the oil for 5-10 minutes, hold the inner ring with one hand, and the other. When the hand rotates the outer ring, the dry oil or rust-proof paste on the bearing will be lost. Then put the bearing into the cleaner oil, brush it with a gold brush, wash the oil in the ball and the hole, then put it in the gasoline for 1 time, take it out and put it on clean paper.
     When cleaning spherical ball bearings and short cylindrical roller bearings, the balls, bead frames, inner rings and outer rings should be removed.

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How to choose oil according to the Dn value of the rolling bearing

The recommended oil viscosity according to dn value / temperature is as follows:

Dn value <10000mm.r/min, oil viscosity 60mm2/s for bearing working temperature 0-30°C, suitable oil 37.8°C viscosity 115mm2/s at 30-60°C, suitable viscosity 37.8°C at 60-90°C 360mm2 / s, suitable oil at 90-120 ° C 37.8 ° C viscosity 750mm2 / s;

The dn value is 10000-25000mm.r/min, the oil viscosity is 35mm2/s when the bearing working temperature is 0-30°C, the applicable oil is 37.8°C viscosity 95mm2/s at 30-60°C, and the applicable oil is 37.8°C at 60-90°C. Viscosity 270mm2 / s, suitable oil at 90-120 ° C 37.8 ° C viscosity 550mm2 / s;

The dn value is 25000-60000mm.r/min, the oil viscosity is 35mm2/s when the bearing working temperature is 0-30°C, the applicable oil is 37.8°C viscosity 70mm2/s at 30-60°C, and the applicable oil is 37.8°C at 60-90°C. Viscosity 270mm2 / s, suitable oil at 90-120 ° C 37.8 ° C viscosity 550mm2 / s;

Dn value is 60000-75000mm.r/min, oil viscosity is 20mm2/s when bearing working temperature is 0-30°C, suitable viscosity is 37.8°C 60mm2/s at 30-60°C, and suitable oil is 37.8°C at 60-90°C Viscosity 220mm2 / s, suitable oil at 90-120 ° C 37.8 ° C viscosity 360mm2 / s;

Dn value is 75000-100000mm.r/min, oil viscosity is 20mm2/s when bearing working temperature is 0-30°C, viscosity is 60wt2/s at 30-60°C, viscosity is 60mm2/s at 60-90°C, and suitable oil is 37.8°C at 60-90°C Viscosity 160mm2 / s, suitable oil at 30-120 ° C 37.8 ° C viscosity 3600mm2 / s;

Dn value 100000-250000mm.r/min, oil viscosity 9mm2/s for bearing working temperature 0-30°C, 37.8°C viscosity 35mm2/s for 30-60°C, 37.8°C for oil at 60-90°C Viscosity 115mm2 / s, suitable oil at 90-120 ° C 37.8 ° C viscosity 270mm2 / s;

Dn value is more than 250,000 mm.r/min, oil viscosity is 9mm2/s when the bearing working temperature is 0-30°C, 37.8°C viscosity is 35mm2/s at 30-60°C, and suitable oil is 37.8°C at 60-90°C. The viscosity is 95 mm 2 /s, and the applicable oil at 90-120 ° C is 37.8 ° C viscosity 270 mm 2 / s.

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