NSK bearings imported one-way bearing ring processing, NSK bearings through the process of NSK bearings we can better understand the performance and quality of NSK bearing import more trust SKF Bearings http://www.skf-fag.org/ .

NSK import many types of bearing, although its structure type and tolerance grade differences, material selection, processing method, but the basic manufacturing process are include the following contents:



1, NSK one-way bearing parts manufacturing - bearing parts inspection - bearing parts demagnetization, cleaning, rust - bearing assembly - NSK one-way bearing NSK one-way bearing demagnetization finished products, finished products inspection - cleaning - bearing product packaging oil pipe finishing warehousing.



2, the ring is one of the important parts, NSK one-way bearing NSK variety of one-way bearing, due to make different types of NSK bearings one-way bearing ring size, structure, manufacturing equipment, process method, etc. Each are not identical. And because ring machining processes, process more complex, high machining accuracy, therefore, the processing quality of NSK one-way bearing ring have great effect on the precision, service life and performance.



3, ring manufacturing raw materials for cylindrical bar stock or tube material, depending on the molding process at present, NSK one-way bearing ring generally has the following several kinds of manufacturing process.



1) forging, annealing (bar) material (or normalizing - turning (cold roll forming) - quenching and tempering heat treatment - grinding - check - demagnetization, cleaning - submit assembly parts.



2) (bar, pipe material) blanking - molding - quenching and tempering heat treatment of cold rolling grinding - check - demagnetization, cleaning - submit assembly parts.



3) (tube) - cutting molding - heat treatment quenching and tempering - grinding - check - demagnetization, cleaning - submit assembly parts



4) (bar) blanking - cold (warm) extrusion - turning - heat treatment quenching and tempering - grinding - check - demagnetization, cleaning - submit assembly parts



Ring forming methods: currently in ring processing, molding method basically has the following kinds: forging forming, cutting forming, cold rolling forming and cold extrusion (temperature).



1) forging forming



By forging processing, metal internal defects may be eliminated to improve metal organization, make the metal flow distribution is reasonable, good metal tightness. NSK one-way bearing forging forming technology are widely used in the processing, can be completed from the inner diameter to 20 mm to 5000 mm diameter oversize small products processing.



2) cold rolling forming



Cold ring rolling technology is a kind of can improve material utilization, improve the metal tissue compactness, maintain the advanced technology of metal flow linear method, it is a kind of chipless machining method. Theoretically, the cold roll forming products without turning can be directly on heat treatment and grinding. At present, the technology is mainly used in cold rolling NSK one-way medium and small deep groove ball bearing, the main technological process is: forging blank (ring) - turning (except channel) - rolling (ditch and chamfering) the whole diameter - soft grinding both ends. Is made of cold rolling technology and forging forming process, the precision of the products in addition to the affected by the precision equipment, but also influenced by forming mold accuracy.



3) cutting molding:



NSK one-way bearing industry in traditional cutting molding technology is to use a special lathe, the concentration process method is adopted to complete the processing. But as a result of this method used equipment adjustment is difficult, low accuracy of machine tool, the material utilization rate is low, so the process is to be eliminated.



To sum up, the ring forming direction should be toward the metal high material utilization, high production efficiency, forming the direction of high precision. Therefore, high-speed upsetting technology, technology, the numerical control turning cold rolling forming technology will get more and more applications.