Steel bar threading machine

Hydraulic Thread Rolling Machine Product Description
The Hydraulic Thread Rolling Machine is a high-efficiency cold forming machine designed for producing precise external threads on bolts, studs, screws, and other cylindrical metal parts. Unlike traditional cutting methods that remove material, this machine uses hydraulic pressure to displace material, forming threads that are stronger, smoother, and more accurate. Ideal for high-volume production in automotive, fastener, construction, and hardware industries, our thread rolling machine delivers consistent quality, low operating costs, and minimal material waste.

Key Features
Hydraulic Drive System – Provides stable and adjustable rolling pressure (10-25 MPa) for consistent thread quality across thousands of parts. The hydraulic pressure can be finely tuned to match different materials and thread specifications.
High Rigidity Cast Iron Body – The machine frame is made of high-quality cast iron, which minimizes vibration during high-speed operation, ensuring long-term accuracy and durability even under continuous heavy-duty use.


Infinitely Variable Rolling Speed – Rolling speed is adjustable from 0 to 60 m/min, allowing operators to optimize speed for different materials (carbon steel, stainless steel, alloy steel, etc.) and thread sizes. This flexibility maximizes both quality and productivity.
Easy Die Change System – The die holder is designed for quick and tool-free die replacement. Changing dies takes only a few minutes, significantly reducing downtime between batch changes and increasing overall productivity.


Overload Protection & Emergency Stop – Built-in hydraulic overload protection automatically stops the machine if rolling pressure exceeds the preset limit, preventing damage to the machine and dies. A prominently placed emergency stop button ensures operator safety in any situation.
Low Noise & Energy Efficient – Compared to thread cutting machines, thread rolling generates significantly less noise (typically below 75dB) and consumes less energy because there is no friction of a cutting tool and no chips to remove. This makes it suitable for indoor workshops and reduces electricity bills.

Cold Forming Process – The rolling process displaces material rather than removing it. This results in zero material waste, and the thread grain structure is compressed, creating work-hardened threads with 30-40% higher fatigue strength and better surface finish (Ra 0.4-0.8) compared to cut threads.
Capable of Rolling Hardened Materials – The machine can roll threads on pre-hardened materials up to HRC 45, eliminating the need for post-rolling heat treatment in many applications and expanding the range of possible workpiece materials.

Automatic Feeding and Ejection Options – For high-volume production, optional automatic feeder and ejector can be integrated, allowing continuous operation with minimal operator intervention. This reduces labor costs and increases output.
Long Die Life – Rolling dies are made from high-speed steel or carbide and can produce tens of thousands of parts before needing replacement. Proper lubrication and adjustment further extend die life, reducing tooling costs per part.

User-Friendly Control Panel – The control panel features clear buttons, pressure gauge, speed dial, and emergency stop. A foot switch allows hands-free operation, freeing the operator’s hands to feed workpieces.
Versatile Thread Range – Capable of rolling metric, imperial, UNF, UNC, and custom thread forms. Suitable for bolt diameters from 2mm up to 24mm and thread lengths up to 300mm (customizable).
Low Maintenance – The hydraulic system is sealed and requires only periodic oil changes (every 1000 hours). The simple mechanical design means fewer moving parts that can fail, reducing downtime and servicing costs.
Consistent Quality – Hydraulic pressure control ensures each thread is rolled with exactly the same force, eliminating variations caused by operator fatigue or skill level. This is critical for high-volume production where every part must meet specifications.
Compact Footprint – Despite its powerful capabilities, the machine has a relatively small floor space requirement, making it suitable for workshops with limited space.