Oilless self lubrication FAG bearing selection

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In order to solve the mechanical equipment of high temperature, low speed and heavy duty, dust, water to rush drench and impact vibration lubrication problem, choose oilless self-lubrication FAG bearing.high-spe ed bearings
1, FAG bearing structure self lubricating FAG bearing is in FAG bearing matrix metal friction surface an orderly development size appropriate cavity, and embedded molybdenum disulfide, such as graphite made composite self lubricating block set in metal sleeve, made of composite FAG bearing, solid lubricant friction area amounted to 25-65%. Solid self-lubricating block in 280 ℃ under the high temperature of normal work. But because of its low mechanical strength, bearing capacity is weak, easy to produce deformation, put it with the metal hole slot can inhibit the shortcomings, to form the metal part of the load effect, self lubricating block lubrication.
This kind of self lubricating FAG bearing lubrication mechanism is in the shaft and sleeve of the sliding friction process, self lubricating material molecular part transferred to the shaft of the metal surface, fill and level up tiny not plane, and forms a layer is relatively stable solid lubrica ting film, causing solid lubricant film between grinding, prevent shaft and sleeve of the adhesive wear. The rationality of the combined for the copper alloy and non-metallic antifriction materials their complementary advantages, particularly suited to no oil, high temperature, high load, low speed, anti-fouling, anticorrosive, strong radiation environment of moving picture, as well as in the water or other solution infiltration and can t add lubricating grease of the special conditions to use.
2, self lubricating block of area ratio of the surface area since the lubrication piece how many and running speed, bearing strength related, speed is low; Bearing strength big, metal area of some boundaries. Such as catch ingot car to walk road wheel FAG bearing self lubricating block area of 25% or so, pull ingot mechanism shaft FAG bearing lubrication should fully, bearing strength is not big, self lubricating block of area of about 65%.
3, transform set of materials tech nical requirements bushing should choose alloy copper manufacture, bushing to a higher hardness, general shall be heat treatment, the hardness is not less than HRC45.
4, self lubricating pieces of geometric shape and Mosaic requirements. Self lubricating block shape have cylindrical and rectangular two kinds, self lubricating according to the area size of can use cylindrical, and can use the rectangle. No matter what kind of shape must Mosaic firm, in case in the operation of the fall off.
5, bushing and shaft fit clearance value self lubricating pieces of coefficient of linear expansion of about 10 times of steel. In order to adapt to FAG bearing temperature change, shaft and bushing clearance from the original metal parts level 4 clearance fit (D4 / DC4) 0.032 ~ 0.15 MM, increase to 0.45 ~ 0.5 MM. Self lubricating block in friction pair side outstanding bushing metal 0.2 ~ 0.4 MM. This will in FAG bearing operation of the initial run-in time fully for lubrication , reducing power drag power consumption.bearing manufacturers
6, no oil self lubricating FAG bearing advantages
A, without oil lubrication or less oil lubrication, applicable to can t gasoline or difficult to go places, can be in use without maintenance or less maintenance;
B, wear-resisting performance is good, small friction coefficient, the use of long life.
C, have a moderate amount of elastic-plastic, can will stress distribution in a relatively wide contact surface, improve the FAG bearing capacity;
D, static friction coefficient close, can eliminate the low creep, so as to ensure the accuracy of mechanical work;
E, can make the machinery to reduce vibration and noise, prevent pollution, improve working conditions;
F, in the operation process can form transfer film, have protection on grinding shaft effect, no bite shaft phenomenon;
G, for mill axial hardness requirements low, without the shaft can be used, which reduces the related parts processing difficulty;
H, thin wall structure, light quality, can reduce the mechanical volume;
I, bush made of brass, can be in corrosion medium use.
Through a aluminium enterprise practice, casting machine FAG bearing to oilless self-lubrication FAG bearing, has continuous use 15 months, and is still in operation, shaft, liner clearance are generally not more than 1 mm, is expected to still can be used 12 months, obviously more than the original service life (2 months).roller ball bearing
Oilless self-lubrication FAG bearing not only can be in aluminium ingot casting machine better get use, at the same time can be adapted to no oil, high temperature, high load, low speed, anti-fouling, anticorrosive, strong radiation environment of moving picture, as well as in the water or other solution infiltration and can t add lubricating grease of the special working condition of the equipment, this kind of FAG bearing has a wide application value.