Regular maintenance
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Email: cncengineer@minnuo.com
Max. rolling O.D.: φ45mm，Max. rolling length: 60mm，Max. rolling pressure: 7 tons
The R7NC is a high-precision, in-feed type CNC thread rolling machine built for compact, stable, and high-output production environments. Engineered to handle rolling diameters up to φ45mm, the machine delivers a rolling pressure of 7 tons, enabling clean, burr-free threads in tough materials like alloy steel, stainless steel, and titanium.
R7NC Series
Spare parts supply
On-site installation service
Customized design
Why Choose Our CNC Solutions
Key Features
- ● In-feed type configuration for short, high-precision thread rolling
- ● Rolling diameter capability up to φ45mm and length up to 60mm
- ● 7-ton rolling pressure delivers strong, consistent threads
- ● Compatible with internal, external, and through-feed rolling techniques
- ● Compact footprint optimized for small batch or production line use
- ● Rigid frame structure minimizes vibration and improves surface finish
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Recommended Configurations
- ● Roll die set: Matched pairs for common thread sizes (e.g., M8, M10, UNF).
- ● Adjustable guide rail: Ensures workpiece alignment during rolling.
- ● Cooling and lubrication system: Reduces die wear and prevents heat deformation.
- ● Digital position sensor: Provides feedback for rolling depth control.
- ● Anti-burr edge finisher: Ensures clean entry and exit profiles post-rolling.
- ● Automatic loading arm: Enhances efficiency in mass production setups.
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Application Case
- ● Client: Automotive Shaft Manufacturer – South Korea.
- ● Use Case: High-precision external thread rolling on drive shaft components.
- ● Setup: R7NC with custom roll dies, guide rails, and mist lubrication system.
- ● Results: Thread tolerance achieved: Class 6g with zero chipping, tool life per die set: Increased to 20,000 cycles, surface finish (Ra): ≤ 1.2 μm, client feedback: “The R7NC outperforms traditional cutting with faster throughput and better fatigue resistance on threaded sections.”
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Product Specifications
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Catalog
Frequently Asked Questions
Minnuo’s thread rolling machines can form metric threads, inch threads, trapezoidal threads, knurling, splines, and custom straight/diagonal patterns, suitable for a wide range of fasteners and shafts.
Thread rolling works best on mild steel, carbon steel, stainless steel, copper, aluminum, and titanium alloys. It is ideal for materials with good plasticity and cold-forming properties.
Thread rolling provides stronger threads, faster production, better surface finish, and no chip waste. It also improves fatigue resistance and dimensional consistency.
Yes! Just send us your product drawings or basic specifications (thread type, material, diameter, length), and we’ll recommend the right thread rolling machine model within 10 minutes.
Absolutely. We offer customization for thread pitch range, roller type, rolling force, control system (manual, hydraulic, CNC), and automatic feeding systems to suit your production needs.
We use hardened and ground guideways, servo or hydraulic pressure control, and calibration through sample test rolling, with dimensional inspection reports provided before delivery.
Standard models are delivered in 10–15 working days. Custom-built or automated models typically require 20–30 working days, depending on complexity.
Minnuo provides a one-year warranty, 24/7 technical support, video training, on-site assistance, and lifetime spare parts support.
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Have any questions? For answers or additional information about ourmachines, please contact us here.
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