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What are the bearing testing standards and items


Release time:

2023-12-26


What are the bearing testing standards and items? What are the bearing testing standards and items? Bearing composition analysis-Foshan Huajin third-party testing agency is currently cooperating with many laboratories across the country to provide your company with very satisfactory bearing testing standards and project-related services. Engineer one-on-one service, with CMA, CNAS, CAL and other authoritative qualifications, test report authority and effective.

Bearing material inspection method

Bearing (Bearing) is an important part of contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient (friction coefficient) during its movement, and ensure its rotation accuracy (accuracy).

I believe everyone should have seen bearings. Now is the mechanical age. As the most important part of contemporary machinery, the main function of bearings is to support the mechanical rotating body, reduce the coefficient of friction, and ensure the accuracy of mixing. Now with the development of the times, all kinds of bearings have been invented, but as a user, the style of the bearing is not the most important. After all, whether a bearing is good or not is the material of the bearing. Only when the material passes, the use of the bearing can be regarded as really passing, and this machine can be regarded as qualified.

Bearing detection range:

Sliding bearings, joint bearings, rolling bearings, deep groove ball bearings, angular contact bearings, self-aligning ball bearings, etc.

Bearing material detection range:

Bearing material detection range is generally between metal materials, non-metallic materials and porous metal materials.

1. metal materials:

Metal materials are more common materials in bearings, mainly including bearing alloys, copper alloys, aluminum-based alloys, zinc-based alloys, etc. Among them, the bearing alloy is also called bearing alloy, which has good wear resistance and anti-friction performance; it has a certain compressive strength and hardness, and is more common in sliding bearings. Copper alloy has good performance in terms of strength, friction reduction, wear resistance, etc., among which bronze has better performance than brass and is the most commonly used material. Aluminum-based alloys have good corrosion resistance and high fatigue strength, and their friction properties are also very good, so they have replaced the more expensive bearing alloys and bronze materials in some areas.

2. non metallic materials:

With the progress of production and science and technology, human beings use natural minerals, minerals, plants, petroleum and other raw materials to manufacture and synthesize many new non-metallic materials, such as artificial graphite, special ceramics, synthetic rubber, synthetic plastics, etc. Among them, various plastics are more common in the bearing field, such as phenolic resin, nylon, polytetrafluoroethylene, etc. Because the plastic material does not react with many chemical substances, it has strong corrosion resistance, and has a certain degree of self-lubrication, and has a certain lubricating ability under high temperature conditions; good embeddability; anti-friction and wear resistance are better. Plastic bearings are often used in mechanical and electrical equipment, fitness equipment, food machinery, furniture and decoration building materials, etc., with a long service life.

3. porous metal materials:

The porous metal material refers to a bearing material formed by pressing and sintering different metal powders. This material is a porous structure, with pores accounting for about 10% to 35% of the volume. Before use, immerse the bearing bush in hot oil for several hours to fill the pores with lubricating oil. Therefore, bearings made of this material are usually called oil-containing bearings, which are self-lubricating and can be used for a long time without lubricating oil. It can still work well.

bearing material testing project:

Bearing testing items mainly include: number plate identification, elemental analysis, metal and its compounds analysis, physical properties can do thermal performance, oxidation resistance, wear resistance, salt spray, corrosion, density, thermal expansion coefficient, elastic modulus, hardness, payload, etc, the process performance can be used for filament stretching, fracture inspection, repeated bending, bidirectional torsion, hydraulic test, flaring, bending, curling, flattening, ring expansion, ring stretching, microstructure, metallographic analysis, failure analysis, non-destructive flaw detection, etc.

bearing part of the testing standards:

GB/T 18579-2019: High carbon chromium steel wire for bearings

GB/T 305-2019: Dimensions, Geometrical Product Specifications (GPS) and Tolerance Values for Retaining Grooves and Retaining Rings of Rolling Bearings

GB/T 12764-2019: External dimensions, geometric product specifications (GPS) and tolerance values of needle roller bearings with stamped outer ring without inner ring for mining rolling bearings

GB/T 24610.1-2019: Vibration measurement methods for mining rolling bearings-Part 1: Fundamentals

GB/T 24610.2-2019: Vibration measurement methods for mining rolling bearings-Part 2: Directional ball bearings with cylindrical bore and cylindrical outer surface

GB/T 24610.3-2019: Vibration measurement methods for mining rolling bearings-Part 3: Spherical roller bearings and tapered roller bearings with cylindrical bore and cylindrical outer surface

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