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The color can be seen from the coupling shaft coupling and quality of materials
Porous metal materials: porous metal is a kind of powder materials, it has a porous structure, if its immersed in lubricating oil, so that the pores in the lubricating oil is filled, into oil bearing has self lubrication performance. Porous metal material toughness is small, only to adapt to the stable without impact load and speed, small case.
Coupling: commonly used plastic bearing plastic phenolic plastic, nylon, PTFE, plastic bearings have greater compressive strength and abrasion resistance, available water and oil lubrication, also have self-lubricating properties, but poor thermal conductivity. Bearing the appearance color can fully reflect the product bearing materials, for the majority of counterfeit bearings products, are generally in the selection of steel under article. As we all know, the price of steel is also determines the bearing product price is one of the important reasons, therefore some traders in the use of steel in the article, such as reducing the steel models, shoddy. The use of ordinary steel, carbon steel, malleable material, have more very person will use iron pipe instead of steel products. Therefore, in the coupling of the color is the same as the authentic products are very different, these low-cost materials mostly white in color, coaxial bearing steel green there is an obvious difference.
Before and after mounting bearings, feeler gauge used for measuring the radial internal clearance method applied to large and medium sized spherical and CARB bearing. The best is the measurement of no load roller between the outer ring and the clearance. Measuring the lock nut tightening angle is a proven method, can be used to determine the tapered shaft neck size bearing the correct degree of interference. Guideline values for the tightening angle a has been established, help in the tapered shaft neck of accurate positioning of the bearing.
Therefore, Botou billion coupling to remind you, in the choice of the coupling time, don't just look at the price, also must pay attention to the coupling material and color, to avoid the wrong product, affect your production
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