Causes and preventive measures of broken teeth of slewing bearing-Zhehua Machinery Precision Forging

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Causes and preventive measures of broken teeth of slewing bearing

Release time:

2023-08-23

Causes of broken teeth of 1. slewing bearing
　　
1. Aspects of production
　　
(1) The strength of the material used in the bearing production process is insufficient or there are a large number of non-metallic inclusions in the metal structure, which will affect the rigidity of the bearing material.
　　
(2) The heat treatment quenching process of the bearing can improve the strength, toughness, wear resistance and fatigue strength of the bearing. If the heat treatment process is not good, the performance of the bearing may be affected. For example, the heating temperature is too high, which makes the carbon concentration of the surface carburized layer too high, forming angular block and network carbide structure. However, the subsequent quenching and heating process temperature is too low to eliminate it, resulting in increased brittleness of carburized layer surface, the service life of the gear is reduced.
　　
2. Installation
　　
(1) Poor meshing: Improper adjustment of the backlash of the large and small gears during bearing installation, and poor meshing may cause tooth breakage.
　　
(2) Meshing gap adjustment: The meshing gap adjustment of the tooth jump and the pinion is not adjusted according to the requirements, resulting in the gear and the large gear during operation when the tooth jump position is large, the gear is stuck and the tooth is broken.
　　
(3) the gear axis is not parallel: after the installation of the size of the gear meshing, resulting in broken teeth.
　　
(4) bolt loosening: slewing bearing installation bolt fastening is not firm, the size of the gear meshing is poor, resulting in broken teeth.
　　
3. Aspects of use
　　
(1) Abnormal operation: tooth breakage caused by violation of relevant equipment operation procedures, overload high-speed rotation or host collision with obstacles, etc.
　　
(2) Foreign matter stuck: when the slewing bearing meshes with the pinion, foreign matter is stuck, causing tooth breakage.
　　
The broken teeth of the slewing bearing are irreversible and need to be replaced. After the reasons for the broken teeth of the slewing bearing are clear, we should summarize the corresponding experience to prevent the occurrence of broken teeth.

What are the application areas of slewing bearings?

How to remove the slewing bearing? Bearing disassembly method and matters needing attention

The company's main products cover automobile gear forgings, automobile wheel flange forgings, railway train forgings, oil drill pipe joint forgings, agricultural machinery forgings, engineering hydraulic machinery forgings, construction basket forgings, solar energy bearing support forgings, etc. The weight of forgings of our products covers a wide range of 400 products from 0.3G to 50 KG. Automobile gear forgings are the company's main products, with an annual output of 15000 tons. Oil drill pipe joints have now applied for two national invention patents. Construction basket internal gear plate forgings in the industry in a leading position.

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Zhehua Precision Forging Co., Ltd. will rely on the advantages of talents, technology, equipment, automation, etc., adhering to the concept of excellence and forging the future, and be recognized by the industry with integrity, strength and product quality. In the new stage of development, it will continue to provide new and old customers. The best quality products and services inject new vitality and glory into the "Zhehua" brand.

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The company's direct or indirect customers include Yuchai Group, China National Heavy Duty Truck, North Benz, Yutong Bus, Kubota Agricultural Machinery, Shanghai BYD, Shenxi Hanging Basket and more than 70 units. In line with the principle of mutual benefit and win-win cooperation, the company is committed to providing customers with better products, more reasonable prices, the most smooth communication, for customers in the process of improving product quality and reducing procurement costs, and the most comprehensive partnership with new and old customers.

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