Rolling and expansion is a forging process that uses a special ring rolling machine (also called a hole expansion machine) to thin the blank wall thickness of an annular ferrule, expand the inner diameter and outer diameter at the same time, and obtain the required cross-sectional shape.
The D51 vertical ring rolling machine has a novel shape, beautiful appearance, light body, good rigidity, high precision, compact machine structure, safe and reliable use, and very convenient operation and maintenance. The most widespread use is in the bearing forging industry. Various types of bearing rings, both outer and inner rings, can be rolled and formed. The raceways and ribs of the ferrules can also be rolled out accordingly.
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