Introduction of KOYO Bearing Inspection Quality Factors

Hold the inner ring of the KOYO bearing with your left hand and rotate the right hand to the outer ring to hear if there is noise. Since counterfeit products in the production process are mostly unavoidable impurities hidden in the bearings, noise is generated when they rotate.

The relubrication of KOYO bearings is carried out during scheduled plant shutdowns and is periodically replenished. At the same time, the old grease is removed or the old grease is forced out through the drain empty. The grease nipple should be wiped clean before adding fresh grease. If the bearing housing has no lubrication nozzle, the bearing housing cover or end cover should be opened to remove the old grease and, after cleaning, the same type of fresh oil should be added.

Rotation recording activity refers to KOYO bearings and finished bearings after complete assembly. There should be no stuck, stuck, emergency stop and other undesirable phenomena when starting up. The general requirements for the rolling series in the bearing include dimensions, tolerance classes and merging, code, large values ​​for chamfer dimensions, radial clearance, bearing ring and rolling body materials, part hardness, vibration values, interchangeability, measurement Method, rated load and rated life, signs, inspection rules, packaging, residual magnetism, surface quality, cleanliness, rotational flexibility, etc. The surface quality includes signs, appearance, fine roughness, etc. It is not allowed to have bumps, cracks, crushes, black skin, burrs, and rust.

The KOYO bearing fluctuating sound is directly related to the waviness of the rolling surface of the bearing. This is a kind of pure-tone noise. For a constant rotation speed, its frequency does not change. For a changing rotation speed, its frequency also changes. .

KOYO bearings need to regularly check the oil level and oil quality. Normally, the normal oil level should be in the range of 1/3-2/3 of the oil level of the equipment. If the oil filling method is oil cup, the oil level shown only represents the oil filling capacity, and the bearing housing oil level is to meet the operation requirements. The oil level in the oil cup is less than 1/4 of its total volume and the oil may be considered.

The correct installation and maintenance of KOYO bearings is an important factor in the normal operation of the bearings. At the same time, attention must be paid to maintaining the cleanliness of the bearings. Bearings must be protected from contamination and moisture, and must be properly installed and lubricated. In addition, the design of the bearing arrangement, the condition of the oil seal, the form and replacement cycle of the lubricant, and the special maintenance also play an important role and must be watched.

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