Thread rolling machine R17NC-II

CNC

Overview
The R17NC-II (Through-feed) is a high-end CNC 3-axis thread rolling machine engineered for long-part uninterrupted thread forming. It is designed to deliver precision, durability and burr-free thread forms on extended components using plastic deformation (rolling) rather than cutting. The machine supports high-strength threads, splines, and knurled forms with minimal heat generation and no material loss.

Key Features

• Through-feed rolling capability up to 4,000 mm part length for uninterrupted operations.
• Max. rolling diameter reported up to φ45 mm (also referenced in one part of the page as φ75 mm for a variant).
• High rolling pressure up to 17 tons for forming threads and splines in tough materials.
• CNC 3-axis control for precise die positioning, pressure and feed management.
• Supports full automation and robotic integration for mass production.
• Suitable for metric, inch and trapezoidal threads, as well as knurling and splines.
• Minimal heat generation and no chip production due to cold-forming process; improved fatigue resistance and surface finish.

Recommended Configurations

• Servo-powered roller feeder to ensure steady feed of long bars (4 m capability).
• High-strength thread roll dies customized for metric, trapezoidal, or UNC threads.
• Integrated mist coolant system to enhance surface finish and reduce tool wear.
• Extended base with roller support to prevent deflection during long-part operation.
• Laser thread sensor for real-time monitoring of deviation and thread pitch control.
• Safety enclosure with light curtain for industrial-grade protection during continuous rolling.

Application Case (example)

• Client: Energy equipment manufacturer (case example).
• Use case: Rolling of 3.8 m anchor rods with trapezoidal threads for wind turbine base systems.
• Setup: R17NC-II with programmable 3-axis CNC, auto feeder and trapezoidal roll dies.
• Reported results: Thread pitch accuracy ≤ ±0.015 mm across full length; output 80+ rods per hour in continuous shift operation; surface finish Ra ≤ 1.0 μm with no secondary finishing required. Client feedback highlighted precision and stability over long parts.

Materials, Thread Types & Benefits

• Thread types: metric threads, inch threads, trapezoidal threads, knurling, splines and custom straight/diagonal patterns.
• Suitable materials: mild steel, carbon steel, stainless steel, copper, aluminum, and titanium alloys (materials with good plasticity and cold-forming properties).
• Benefits vs. thread cutting: stronger threads, faster production rates, superior surface finish, no chip waste, improved fatigue resistance and tighter dimensional consistency.

Caractéristiques / spécifications techniques

• Model / Series: R17NC-II (R17NC-II Series)
• Machine type: Through-feed CNC thread rolling machine, 3-axis control
• Max. rolling pressure: 17 tons
• Max. rolling diameter: φ45 mm (page also references φ75 mm in a separate model detail listing)
• Max. rolling length: 4,000 mm (page also contains a shorter-length entry: 150 mm in a different listing)
• Through-feed capability: continuous rolling for long parts (examples up to 4,000 mm)
• Control: CNC 3-axis (precise management of die position, pressure and feed)
• Automation: supports full automation and robotic integration
• Recommended accessories: servo-powered roller feeder, mist coolant system, extended roller-supported base, laser thread sensor, high-strength roll dies, safety enclosure with light curtain
• Typical applications: long anchor rods, fasteners, splines, high-strength threaded components requiring burr-free surfaces and high fatigue resistance