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Due to the different needle INA bearings provide a variety of materials, production process and coating capabilities and equipment, so people in the selection of the bearing should be based on specific application requirements when selecting the most appropriate. Embedded in a rolling-contact bearing seals, have a significant influence on bearing performance and reliability, performance bearing on itself and can have a big impact. General considerations for bearing rings and rolling elements including: with regard to the carrying capacity of hardness, in rolling contact and lubrication under different clean degree of endurance, as well as dimensional stability.
Selection of propriety remains needle INA bearings failure analysis of factors that you must consider. Main tasks of bearing failure analysis, is based on the large amount of background material, analysis of data and failure modes, identify the main factors contributing to failure so that targeted measures for improvement, and extended bearing service, avoid sudden early bearing failure. Installation conditions is one of the leading factors in the use factor, bearings are installed is not suitable, they cause the entire set changes among parts of bearing stress condition, bearing does not operate under normal conditions and early failure. Depending on the bearing installation, use, maintenance, maintenance of technical requirements, in the operation of bearings by bear load, speed, temperature, vibration, noise monitoring and inspection and lubrication, unusual immediately find the cause, make adjustments, bring it back to normal.
Along with advancement of the reasonable structure design, will have a long needle INA bearing life. Bearing manufacturing generally after forging, heat treatment, machining, grinding and assembling multiple processing procedure. Rationality, advanced processing technology, can also affect the stability of the bearing life. Which influence the quality of finished product bearing heat treatment and grinding operations, often has a more direct relationship and bearing failure. Bearing to bearing surface degenerating layer in recent years studies have shown that close to the surface quality of bearing grinding process.
Needle INA bearing metallurgical quality of the materials used to be the main factors affecting the early failure of rolling bearings. As metallurgy technologies (such as bearings, such as vacuum degassing of steel) progress, improvement in the quality of raw materials. Raw materials quality factors in the failure analysis of bearing the weight of have decreased significantly, bearing but it remains one of the main factors affecting the bearing failure.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7228BDF NSK | 140 | 250 | 42 |
| 7228ADF NSK | 140 | 250 | 42 |