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Although many types of TIMKEN bearings, structure type, tolerance levels, material selection, processing methods differ, but the basic manufacturing process contains the following:
1 deep groove ball bearings parts manufacturing - bearing parts check - bearing parts demagnetization, cleaning, the rust - bearing assembly - finished bearing checking - the finished bearing demagnetization, cleaning - finished bearing oiled packaging fighting finished product storage.
2, the ferrule is an important part of the bearing ferrule size, so that different types of bearings of the same structure, used in the manufacturing equipment, processes, methods, etc., due to the wide variety of bearings. And ferrule processing procedure, process complexity, high precision machining, processing quality rings TIMKEN bearings, precision, long service life and performance have an important impact.
Rings manufactured raw materials for the cylindrical bar or pipe material, depending on the molding process, bearing rings generally have the following manufacturing process.
1) (bar) materials - forging - annealing (or normalized - Turning (cold rolling molding) - heat treatment quenching and tempering - grinding - Part check - demagnetization, cleaning - submitted to the assembly.
2) (bar, pipe material) material - cold rolling forming - heat treatment quenching and tempering - grinding - Part Check - demagnetization, cleaning - submitted to the assembly.
3) material (tube feeding) - Turning forming - heat treatment quenching and tempering - grinding - Part check - demagnetization, cleaning - Submit assembly
4) (bar) material - cold (temperature) extrusion - turning - heat treatment quenching and tempering - grinding - Part check - demagnetization, cleaning - Submit assembly
Ring forming method:
Ferrule processing, molding method are the following: forging, turning forming, cold rolling molding and extrusion molding cold (temperature). In the above molding method, forging forming the most widely used, accounting for about 80% of the production volume for some small general-purpose products can be used rods (tube) feeding directly turning molding. Since the 1980s, China's small and medium-sized enterprises in the production of small and medium-sized rings, cold rolling and cold temperature extrusion process.
1) forging
Can eliminate the intrinsic defects of the metal by forging, to improving metal structure, reasonable distribution of metal flow lines, metal tightness. Forging processing technology is widely used in deep groove ball bearings molding can be completed from the small inner diameter of ~ 20mm to 5000mm outside diameter large processing. Common forging methods: hot forging, cold forging, warm forging processing of hot forging.
Hot forging its forming equipment is divided into: free forging process, the press forging technology, flat forging machine forging process and high-speed forging machine forging process.
2) cold rolling molding
Cold rolling process is capable of improving material utilization, improve the compactness of the metal structure, advanced technology to maintain the flow of metal linear method, it is a chipless machining method. In theory, the cold rolling forming products were not turning to direct heat treatment and grinding. Cold rolling process is mainly used in small deep groove ball bearings, the process:
The rough forging (ring) - Turning (except channel) - Rolling (ditch and chamfer) the entire path - Polishing both ends of the surface.
The cold rolling process and forming process, the accuracy of the product affected by the precision equipment, but also by molding mold precision.
3) Turning molding:
In the deep groove ball bearing industry, the traditional turning molding technology is the use of a special machine, centralized process to complete the molding process. However, due to the method used equipment adjustment difficult, low-precision machine tools, material utilization is low, so the process of being phased out.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 30217U NTN | 85 | 150 | 28 |
| 33017U NTN | 85 | 130 | 36 |