Advanced Automatic Thread Rolling Machine Launched, Bringing Higher Precision & Efficiency for Global Fastener Manufacturers
NINGBO, China – September 18, 2026 – Harbin Rainbow Machinery, a leading global supplier of fastener cold forming production equipment, officially announced the launch of its fully upgraded automatic two-roll thread rolling machine. Built on over 30 years of industry engineering experience, the new machine addresses core pain points of fastener manufacturers worldwide – including inconsistent thread accuracy, low material utilization and high maintenance costs – and delivers a more reliable, efficient and cost-effective cold thread forming solution for mass production.
As a core piece of downstream equipment in fastener production lines, the upgraded thread rolling machine adopts advanced cold rolling forming technology as a replacement for traditional cutting processes. By compressing metal fibers to form threads instead of removing raw material, the cold rolling process preserves the full continuity of the metal grain structure. Finished threads demonstrate 20% to 30% higher tensile strength, smoother surface finish and tighter dimensional tolerance compared with conventionally cut threads, significantly improving the mechanical performance and service life of end products such as bolts, screws, studs, rivets and custom threaded workpieces.
The machine is built on a heavy-duty monolithic cast iron frame engineered for maximum structural rigidity and vibration damping. This robust construction ensures stable, low-noise operation even at continuous maximum production speed, maintaining long-term forming precision and reducing wear on key transmission components. Equipped with an industrial PLC control system and variable frequency drive, the machine allows stepless speed adjustment from 60 to 250 pieces per minute, giving operators flexible control over production output and forming quality to match different order requirements. It also integrates an automatic wire straightening and continuous feeding system, enabling uninterrupted mass production and greatly reducing manual intervention and labor costs.
To extend equipment lifespan and lower daily maintenance costs, the machine is fitted with a fully automatic circulating lubrication and cooling system. The system delivers constant, precise lubrication to core moving parts while stabilizing working temperature during extended production runs. Built-in overload protection and intelligent fault alarm functions further enhance operational safety, minimizing unplanned downtime and production loss. The machine supports processing a wide range of ferrous and non-ferrous materials including carbon steel, alloy steel, stainless steel, copper and aluminum alloy, with an applicable workpiece diameter range of 2mm to 20mm, making it suitable for small, medium and large fastener manufacturing facilities.
“For fastener factories, production stability and consistent thread quality directly determine order profitability and long-term customer retention,” said the Product Director of Harbin Rainbow Machinery. “Our upgraded thread rolling machine is designed based on real production feedback from hundreds of global clients. It not only raises forming precision and production speed, but also simplifies daily operation and maintenance, helping our customers reduce comprehensive production costs and gain stronger competitiveness in their regional markets.”
The equipment has already been deployed and received positive validation from customers in India, South Africa, Turkey and Southeast Asia. To support global clients with reliable after-sales support, Harbin Rainbow Machinery provides a complete service system covering remote installation guidance, on-site operator training, genuine spare parts supply and lifelong technical consultation. The company also offers fully customized solutions tailored to specific production requirements, workpiece specifications and factory layout planning.
As a professional manufacturer focusing on full-range fastener production equipment, Harbin Rainbow Machinery’s product portfolio covers cold heading machines, thread rolling machines, continuous quenching furnaces, wire drawing machines and turnkey complete fastener production lines. Moving forward, the company will continue to invest in technology R&D and product iteration, and remains committed to providing one-stop, high-performance cold forming solutions for fastener enterprises worldwide.