Rebar Threading Machine

The Rebar Threading Machine by National Cutting Tools is an indispensable construction equipment tool engineered for cutting parallel metric threads on reinforcing steel bars (TMT rebars) for mechanical coupler connections. In modern infrastructure and high-rise construction, mechanical splicing replaces lap splicing to eliminate steel waste, reduce rebar congestion, and ensure joint strength exceeds the ultimate tensile strength of the parent rebar.

Built for rugged site and fabrication yard conditions, this machine features a powerful electric drive, a self-centering heavy rebar vise, and an adjustable tangential chaser head. It cuts standard metric threads on rebar diameters from 16 mm to 40 mm in mild steel, Fe 500, Fe 550, and Fe 600 grades within 30 to 40 seconds per bar end, delivering threads that thread smoothly into factory rebar couplers without binding.

Key Features

• Rib-Hardened Rebar Threading: Specially treated cutting chasers cut clean threads through outer rebar ribs and hard surface layers without tooth chipping.
• Parallel Thread Profile: Cuts uniform metric threads matching international coupler standards (IS 16172, BS 8110, ACI 318).
• Heavy-Duty Self-Centering Clamp: Hardened serrated jaws lock irregular rebar profiles on dead center, preventing bar spin during heavy cuts.
• Micro-Adjustable Thread Length Stop: Ensures exact thread depth matching coupler specifications, preventing thread runout.
• Compact & Portable Footprint: Designed for easy transport between rebar yards and job sites with integrated lifting eyes and rugged frame.
• Flood Coolant Circulation: Keeps cutters cool and flushes swarf into an easily cleaned swarf tray, maximizing chaser life.

Applications

• Flyover, highway viaduct, and metro rail rebar splicing
• High-rise building columns, shear walls, and foundation raft rebar
• Diaphragm wall and deep pile foundation rebar cage assembly
• Cut-and-bend steel service centers and precast concrete plants

Manufactured at the National Cutting Tools works in Ludhiana, Punjab. Every machine is calibrated and tested on high-tensile TMT rebar with thread gauges and tensile coupler test bars before dispatch.