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In order to solve the mechanical device for high-temperature, low-speed, heavy duty, large dust, shock shower and the water lubrication, use Oilless self-lubricating bearings.
1, constructed of self-lubricating bearings are FAG bearings on metal friction surface of the substrate size and orderly development of appropriate cavities and embedded, molybdenum disulfide, graphite, and so on self-lubricating composite blocks made from inlaid metal, composite bearings made of solid friction of lubricants covers an area of 25-65%. Solid self-lubricating block can work normally under high temperature of 280 ° c. But because of its low mechanical strength, loading capacity is weak, prone to deformation, inlaid metal hole it can inhibit such shortcomings in a tank, forming a metal part of the hosting role, since lubrication block, lubrication.
This self-lubricating bearing lubrication mechanism is the process of shaft and sleeve friction, self-lubricating materials the part transferred to the axis of the molecule on metal surface, fill the tiny no plane, and formed a stable layer of solid lubricant film, resulting in wear between solid lubricating films, prevents adhesive wear of shaft and sleeve. This combination of rational combination of copper alloy and nonmetals antifriction material for their respective complementary strengths, particularly suitable for oil-free, high-temperature, high-load, low-speed, anti-fouling, corrosion, strong motion amplitude in the radiation environment, and infiltration of water or other solutions and simply cannot plus lubricating grease special conditions under the conditions of use.
2, self-lubricating block covering how much surface area than self-lubricating block associated with speed, compressive strength, speed low compressive strength, metal the area should be larger. Catch ingot car FAG bearings self-lubricating block walking around the area of 25%, pull spindle body hinge bearing lubrication to the full, compressive strength is not self-lubricating block occupies an area of about 65%.
3, technical requirements for liner material bushings should use alloys of copper, the Bush has high hardness, generally require heat treatment, not below the its hardness HRC45.
4, self-lubricating block geometry and tessellation requires. Self-lubricating block shapes are cylindrical and rectangular two self-lubricating column according to the size of the area can be used, whereas rectangles can be used. No matter what the shape must be set firmly to prevent run off.
5, self-lubricating bushing and shaft clearance values of the coefficient of linear expansion of steel for about 10 times. For adaptation to temperature change, clearance between shaft and bushing from the original metal grade tie (D4/DC4), 0.032~0.15MM, rose to 0.45~0.5MM. Self-lubricating block at the side friction bushing metal 0.2~0.4MM highlighted. This FAG bearing play the initial run-in period is fully lubricated, reduces power drag power consumption.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 33020U NTN | 100 | 150 | 39 |
| 32020XU NTN | 100 | 150 | 32 |