Automatic Cold Heading Nut Bolt Manufacturing Machine with Tapping

This is an Automatic Cold Heading Nut & Bolt Manufacturing Machine with integrated tapping. It performs cold heading (forging) to form bolt/nut heads and shanks, cutoff/shearing of blanks, and in-line tapping to produce threaded parts.

Production speed is model- and part-dependent. Typical ranges in the model lineup are approximately 40–300 pieces per minute; smaller parts and simpler heads reach higher speeds, while large/heavy-duty parts run at lower speeds.

Supported sizes depend on the specific model. Across the model range the normal bolt diameters run roughly from M3 up to about M40, with blank shank lengths from ~8 mm up to ~305 mm depending on model and tooling.

Models differ by forging force (from tens of kN to several hundred kN), main slider stroke, cutoff diameter and length, clutch torque, die sizes, main motor power and overall weight. Choose a model based on required part size, forming force and production speed.

Cold heading works best with ductile metals. Typical materials include low-carbon steel, certain grades of stainless steel, brass, copper and other malleable alloys. Material suitability depends on grade, temper and part geometry.

The product description indicates integrated tapping capability. Tapping parameters (thread size, depth, speed) will depend on the selected model and tooling. For special tapping requirements the supplier can advise or supply custom tapping heads.

Main motor power varies by model. Small models start at about 1–2 kW; mid-size machines commonly use tens of kW; heavy-duty models require several hundred kW. Exact power and electrical requirements will be specified per model and must be confirmed with the supplier.

Cut-off dies, punch dies and main forming dies are required and are sized per part. Some standard dies may be supplied, but custom dies for specific part geometries are typically quoted separately. Confirm which tooling is included in your order.

Regular maintenance includes machine lubrication, periodic inspection and replacement of dies and punches, checking clutch and hydraulic systems, motor and electrical inspections, and keeping the work area clean. Follow the manufacturer's maintenance schedule.

Foundation and installation depend on machine weight and dynamic forces. Models range from a few thousand kilograms to many tens of thousands; larger machines usually require reinforced concrete foundations, anchoring, and professional installation by the supplier or certified installer.

Yes. Machines can be adapted with custom tooling, feeders, automation interfaces, part handling and safety features to fit specific part geometries or production line requirements. Discuss customization needs with the supplier for feasibility and lead time.

Tolerance capability depends on part design, material, tooling precision and process control. Typical cold-headed parts can achieve close dimensional tolerances (often in the hundredths of a millimeter) when using precision dies and proper controls. Final tolerances should be validated with sample runs.

Standard safety features usually include mechanical guards, emergency stop(s), interlocks and operator controls. Additional guarding, light curtains or enclosures can be supplied or retrofitted to meet specific local safety standards (e.g., CE, ISO) if required.

Spare parts (dies, punches, wear items, electrical and hydraulic components) and after-sales service are typically provided by the manufacturer or authorized dealers. Availability and lead times vary by region—confirm stock, warranty and service agreements with your supplier.

Lead time depends on model, customization level and tooling requirements. Standard models may ship faster, while custom tooling and heavy-duty models take longer. Contact the supplier with part drawings and required annual volumes for a detailed quote, MOQ and lead-time estimate.