Rebar Roll Thread Machine | CDRG 45 Threading Machine | Roll Thread Machine | Construction Threading

Описание: #rebar #threading #machine #rebarrollthreadmachine #construction #mitroindustries #rebarcoupler #threadingmachine #mitro #mechanicalsplicing #rollthreadcoupler

The CDRG-45 is a rebar roll threading machine (sometimes called a bar threading machine or rebar thread rolling machine) designed to form screw-type threads on the ends of steel reinforcing bars (rebars). Instead of cutting away material, it rolls or forms threads by cold forging, which preserves the strength of the bar and produces a strong mechanical joint.

This machine is essential where threaded splices, couplers, or mechanical connections replace traditional lapping and welding methods, helping build safer and more reliable reinforced concrete structures.

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Key Features & Specifications
Cdrg 45 Rebar Threading Machine, CDRG45 Rebar Threading Machine or similar models typically have the following

Technical Specs
• Threading Capacity (Diameter) : 16–40 mm rebar size range
• Thread Pitch : ~2.5 mm–3 mm (standard pitch for mechanical couplers)
• Maximum Thread Length : Up to ~80 mm in a single operation
• Motor Power : ~5.5 kW (≈7.37 HP) three-phase electric motor
• Shaft Speed : ~60-80 rpm for consistent, smooth thread forming
• Voltage : ~415 V, 3 phase supply
• Weight & Size : Roughly 350–450 kg; compact footprint for workshop or site use
• Operation : Semi-automatic — operator loads the bar and the machine forms the thread with roller dies.


How It Works
• Preparation : The end of the rebar is positioned and clamped in the machine.

• Rib Peeling : Any surface ribs (on TMT bars) are first peeled to create a smooth cylindrical section.

• Thread Rolling : Hardened rollers press against the bar and force the material to plastically deform, forming precise, continuous threads.

• Completion : A threaded rebar end is produced in a single clamping cycle, ready to engage couplers or connectors.

This rolling process doesn’t remove material (unlike cutting), maintaining or even improving the bar’s mechanical integrity.


Applications
The CDRG-45 is widely used in

• Building Construction : Threaded rebars for columns, beams, slabs.

• Infrastructure Projects : Bridges, highways, tunnels requiring reliable rebar splicing.

• Industrial Structures : Factories and warehouses where mechanical joints speed up assembly.

• Precast & Fabrication Yards : Preparing threaded bars before on-site installation.

Replacing traditional lap splicing or welding with mechanical couplers improves structural strength, speed of construction, and quality control.


Advantages
🔹 Stronger Joints : Rolling threads preserves material strength, giving stronger mechanical connections than cut threads.

🔹 Faster & Efficient : Produces threaded ends quickly with minimal operator effort.

🔹 Consistent Precision : Thread pitch and dimensions are repeatable, ensuring good fitment with couplers.

🔹 Durable & Low-Maintenance: Heavy-duty construction suited for long service life.

🔹 Versatile: Handles a wide range of rebar sizes and is suitable for on-site or workshop use.


Who Uses It?
✔ Construction contractors
✔ Rebar fabricators
✔ Precast concrete manufacturers
✔ Infrastructure builders
✔ Civil and structural engineering firms