Thread Rolling Machine: Chipless Cold Forming Equipment for High-Quality Fastener Threads
After bolt and nut blanks are formed by cold heading machines and nut formers, thread rolling machine handles the critical thread forming process. Harbin Rainbow Technology supplies automatic thread rolling machines for chipless cold forming of external threads for bolts, studs and other threaded fasteners.
Thread rolling reshapes metal material by rolling pressure rather than cutting away metal chips. The metal grain structure stays continuous along thread profiles, which helps maintain good thread strength and surface finish. Our thread rolling machines adopt heavy-duty frame design to reduce vibration during rolling, supporting stable production for long running hours.
The machine supports both in-feed and through-feed rolling modes to handle different thread lengths and workpiece types. Operators can adjust rolling parameters on the HMI panel. Coolant circulation system keeps dies cooled and clean, extending die service life. It can be integrated into automatic production lines after cold heading process.
Suitable for carbon steel, alloy steel and stainless steel workpieces, our thread rolling machines serve manufacturers producing fasteners for machinery, construction and new energy sectors. Harbin Rainbow provides machine commissioning, die matching advice and operational training to help customers achieve stable thread quality in mass production.