One-way bearing material should have performance

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   (1) friction compatibility
The shaft and the bearing direct contact with the prevent the occurrence of adhesion and the formation of the boundary lubrication performance. Compatibility of materials of the impact of Friction factors are:
(1) as vi ce Materials and Metallurgy, constitute the degree of difficulty of the alloy.
(2) the affinity and capacity of the materials and lubricants.
(3) into a pair materials state without lubrication, the friction factor.slim bearing
(4) The microstructure of the material.
(5) the thermal conductivity.
(6) the size of the surface oxide film characteristics.
(2) clamp into the sex
Materials, external hard particles clamp allows the lubricant into to prevent scratches or (and) the ability of the abrasive wear. Metal materials, the low hardness and elastic modulus of the lower clamp into like, non-metallic materials are not necessarily, such as carbon graphite, lower modulus of elasticity, but the clamp into the bad. One-way bearings are usually friction pieces of soft material and hard material, generally soft materials do bush.slim bearings
3. Run
In the shaft and the bearing run-in process, reducing the shaft diameter and bearing machining error, concentricity error, the surface roughness parameter values ​​to make uniform contact, thereby reducing the ability of the friction and wear rate.
When the advantages in the detection of chrome steel and stainless steel as a one-way bearing materials and found that they are not only anti-rust. Chromium steel is the most common one-way bearing materials. It is harder than stainless steel, so a longer service life. However, at higher temperatures, its performance is not how to.
120C high temperature, it occurs to a great deformation of the load decreases. 150C of the high temperature it can tolerate it, but the instant 150C or higher temperatures will reduce the life of the one-way bearing. The heat treatment can make a one-way bearing moment of high temperature 170C.
The most common stainless st eel used for one-way bearing 440, it was enough hard and solid to load (20%) less than the brass, steel, but it can rust, you can put up with the instant high temperature 250C and 300C of the sustained high temperatures. We often mistakenly thought that all of the stainless steel is not magnetic, 440 stainless steel is magnetic, it is not completely rust-proof, but by the impact of salt, acid, alkali. 316 levels of anti-rust performance is very good, is not magnetic, but relatively soft so the load, because it is not solid, so the 316 one-way bearing accuracy is not high, feeling rough.cross roller bearing