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Design features of Yuwei stainless steel bearing

Release time: December 25, 2017 20:31:06 Views: 889

As a new bearing product, many technologies of stainless steel bearing, such as code, technical requirements, material and processing technology, are constantly changing and developing. In terms of bearing code expression, it is generally marked by adding s before the basic bearing code in the world, such as $62042rs, which means 6204 stainless steel bearing with double sealing; some companies also add suffix to mark it. For example, the stainless steel bearing of fag company is identified by S + basic code + W 203b. In our country, the suffix h V indicates that the bearing is made of 9C R18 steel, and the suffix HV 1 indicates that the bearing is made of 9cr8m o steel. The design of stainless steel bearing is not essentially different from that of ordinary bearing, but its technical requirements are somewhat different from that of standard bearing steel bearing. Therefore, in addition to the design principles and standards of general bearings, the following problems should be paid attention to: 1. The material grades and standards of ferrule, cage, steel ball, rivet, sealing ring, framework, grease, fastening screw shall be clearly marked. 2. It is necessary to eliminate the general marking requirements of "heat treatment" and "hardness" in accordance with the current technical standards. 3. Carry out the principle of generalization with the current standard bearing structure parameters. 4. According to the design principle of the product series, we should try our best to achieve the low-cost production principles such as cage nesting, ferrule turning, and the reuse of forging blank core. The corresponding dimension table of ferrule and cage nesting are given. 5. The groove curvature coefficients f I and f e are slightly smaller than those of standard bearings. 6. All surfaces and transition surfaces shall follow the principle of smooth transition, and all surfaces shall be free from sharp corners, burrs, scratches and pits, so as to facilitate rust prevention. The research on rated load and life of stainless steel bearing is rarely reported at home and abroad. It is generally believed that if the hardness of heat treatment is above hre60, its rated load capacity should be equivalent to that of GCrl5 steel bearing. However, because 9Cr18 contains complex carbides (Fe, Cr) and C, there are a lot of eutectic carbides, the average size diameter of carbide particles in the structure is obviously larger than that of GCrl5 steel (about 10 times of that of bearing steel), Therefore, it can be considered that its fatigue life should be lower than that of GCrl5 steel. According to the research data, the contact fatigue life of 9Cr18 is about 70% and 15% lower than that of GCrl5 steel under the same contact stress. At present, the common practice is: the rated dynamic load of 9Cr18 steel is the same as GCrl5; there are two ways to take the rated static load: one is the same as GCrl5 steel, the other is 75% - 8O% of GCrl5 steel.

If necessary Stainless steel bearing For technical problems or stainless steel bearing requirements, please call Shanghai Yuwei Bearing Co., Ltd. service hotline: 021-51099639 or 15001823721 or email: YW @ gifudayo.com official website: http://gifudayo.com

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Shanghai Yuwei Bearing Co., Ltd. (Headquarters)
Tel: 021-51099639
Fax: 021-51861291
Email address: yw@gifudayo.com
Address: 2758 Songjin Road, Zhangyan Town, Jinshan District, Shanghai, China
Shaanxi Yuwei Bearing Manufacturing Co., Ltd
Tel: 029-86696506
Fax: 029-89503160
Email address: sales@gifudayo.com
Address: Qinhan new town free trade zone, Xixian new area, Shaanxi Province
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