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In order to solve the mechanical equipment in the high temperature, low speed, heavy load, dust, water shower and shock vibration lubrication, the choice of oil-free self-lubricating FAG bearings. [Details]

Oil-free self-lubricating FAG bearings

Source: Time:2017-04-25 09:25:11 frequency:

In order to solve the mechanical equipment in the high temperature, low speed, heavy load, dust, water shower and shock vibration lubrication, the choice of oil-free self-lubricating FAG bearings.
In order to solve the mechanical equipment in the high temperature, low speed, heavy load, dust, water shower and shock vibration lubrication, the choice of oil-free self-lubricating FAG bearings.
1, FAG bearing structure Self-lubricating FAG bearings FAG bearings in the metal friction surface of the development of the orderly size of the appropriate arrangement of holes, and embedded in molybdenum disulfide, graphite and other made of self-lubricating block embedded in the metal sets, the system Into the composite FAG bearings, solid lubricant friction area of 25-65%. The solid self-lubricating block can work normally at a high temperature of 280 ° C. But because of its low mechanical strength, weak carrying capacity, easy to produce deformation, it is embedded in the metal hole slot can inhibit this shortcoming, the formation of the metal part from the bearing role, self-lubricating block from the lubrication.
This self-lubricating FAG bearing lubrication mechanism is in the shaft and sleeve sliding friction process, part of the self-lubricating material molecules transferred to the metal surface of the shaft, filling the tiny uneven, and the formation of a more stable solid lubrication Film, resulting in solid lubricating film between the grinding, to prevent the shaft and the sleeve of the adhesive wear. This combination of rationality combines the complementary advantages of copper alloy and non-metallic abrasive materials, and is particularly suitable for oil-free, high temperature, high load, low speed, anti-fouling, corrosion, strong radiation environment, and In water or other solution infiltration and simply can not add grease to the special conditions of use.
2, self-lubricating block area than the proportion of self-lubricating block surface area with the operating speed, pressure strength, low speed; pressure strength, the area occupied by the metal should be larger. FAG bearings such as grasping fork car running wheel FAG bearing the area occupied by about 25%, the spindle shaft FAG bearing lubrication to be sufficient, the pressure is not strong, self-lubricating block area of about 65%.
3, the technical requirements of the bushing material should be made of alloy copper alloy, bushing to have a higher hardness, generally have to heat treatment, the hardness of not less than HRC45.
4, self-lubricating block geometry and mosaic requirements. Self-lubricating block shape is cylindrical and rectangular two, self-lubricating according to the size of the area can be used cylindrical, and vice versa can be rectangular. No matter what kind of shape must be embedded in a solid, to prevent falling off in operation.
5, the bushing and the shaft with the gap value of the self-lubricating block linear expansion coefficient of about 10 times the steel. In order to meet the FAG bearing temperature changes, the gap between the shaft and the bushing from the original metal parts with four (D4 / DC4) 0.032 ~ 0.15MM, increased to 0.45 ~ 0.5MM. Self-lubricating block on the side of the friction protruding bushing metal 0.2 ~ 0.4MM. This will be in the FAG bearing the initial run-in period to be fully lubricated to reduce the power of driving power consumption.


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