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Keep frame of riveted or welding quality, main observation rivet head is partial bit, and skew, and relaxation, and deficiency meat or "double fold ', welding of location is correctly, welding points had big also is had small, has whether welding does not prison or welding excessive caused card live scroll body phenomenon, some keep frame of pressure slope, and received edge, convergence sewing and chisel mouth of quality is guarantee, scroll body is can does not fell out keep frame and can Rotary freely, these points as not requirements, small is caused INA bearings noise and rotating precision reduced, big is may occurred keep frame apart, Bearing caused by mechanical failure or accidents.
From the skin and collapse, both local and loose substrate with metal defects, and often exist to varying degrees around it and decarbonization phenomena of poverty or carbon, materials easy caving, Dent or wear, INA bearing life and accuracy at a disadvantage.
Crack, crack such as raw materials, forging crack, cracks and grinding crack of heat treatment and so on, these crack INA bearings in operation at a later time, becomes a source of stress concentration and the rapid expansion of rupture resulted INA bearings, INA bearing life and great job security. In fact, for important uses of INA bearings, INA bearing factory on 100% magnetic or radiographic inspection of its constituent parts. Rust, black skin, and pitting, the latter two are easy to store moisture and dirt defects, most likely to develop into rust. While rust is leading to poor installation, sources of early wear and fatigue, severe corrosion INA bearing scrap.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 24184CAE4 NSK | 420 | 700 | 280 |
| 23184CAE4 NSK | 420 | 700 | 224 |