CH-320 CN1 and CNC: Fully Hydraulic CNC Tube Benders

CH-320 CN1 and CNC
CNC Tube Bender | Up to 320 mm OD | 1–2 Axes
Engineered for oversized applications, the CH-320 delivers precision and repeatability for the heaviest tubing challenges.

• Tube capacity: up to 320 mm OD
• 1–2 automatic axes
• Tailored for process piping and industrial power systems

Heavy-duty bending at industrial scale.






AMOB CH Series – CNC Pipe Bending Power for Large-Diameter and High-Strength Tubes
From 4 mm up to 420 mm OD | Full CNC Available | Built for Heavy Industry

The CH Series by AMOB is a robust and highly adaptable range of tube and pipe bending machines engineered to meet the toughest industrial demands. From small diameter precision work to heavy-duty pipe bending up to 420 mm OD, the CH Series offers single-stack CNC performance, with options for custom configurations and full integration into complex production environments.

Unrivalled Power, Flexibility and Control for Demanding Applications
The AMOB CH Series has been developed to meet the ever-increasing demands of precision tube bending across a broad range of industries. With the capability to bend tubes from Ø4mm up to Ø420mm OD, this range offers robust solutions for everything from high-strength materials to large-diameter or thin-walled tubes.
Designed for absolute rigidity, accuracy, and process reliability, CH Series machines thrive even in harsh environments including high humidity and temperature extremes. Available in fully CNC-controlled versions with automatic three-axis operation, they also support advanced custom configurations to suit specific application requirements.
Whether for heavy-duty industrial projects or high-specification boiler work, the CH Series combines power, adaptability, and advanced automation to deliver high-performance bending with minimal deformation.



Key Features
• Wide Tube Capacity: Capable of processing tubes from Ø4mm to Ø420mm OD.
• Fully CNC Control: Automatic control of all three axes in a single-stack bending configuration.
• 3D Simulation & Anti-Collision: Built-in component feasibility checks eliminate the need for prototyping and material waste.
• Spring-Back Compensation: Achieves consistent, accurate bends with minimal setup adjustment.
• Robust in Harsh Conditions: Maintains stability and precision under challenging workshop or environmental conditions.
• Versatile Setup Options: Available with front/rear tube loading, motorised tool adjustment, and automatic cutting systems.



Advanced Bending Capabilities
• Tight Radii & High Precision
The CH Series can bend to centreline radius (CLR) ratios below 0.8D, while maintaining low ovality and minimal wall thinning, even with difficult materials or no mandrel assistance.
• Custom Configurations Available
Machines can be customised with extended or shortened lengths, additional axes, larger CLR tooling, or integrated punching units on request.
• Integrated Production Enhancements
Combine with split die tooling, cutting systems, and laser reference technology to reduce downstream processes such as welding, inspection or testing.


AMOB 3D Software – Precision Without Complexity
AMOB’s 3D Software offers market-leading simplicity and intelligence for tube bending automation. Developed in-house, the platform enables:
• 3D File Import (e.g. .STP)
Seamless integration with CAD workflows for instant production validation.
• Direct Programming in XYZ or LRA
Multiple programming methods to suit operator preferences.
• Spring-Back Compensation & Tooling Storage
Stores full configuration and compensates automatically for material behaviour.
• Multi-User Access & Traceability
Includes production logs, error/event history, and optional integration with databases or OPC servers.
• Anti-Collision Simulation
Visual feasibility checks protect tooling and ensure safe operation.
The software also supports automatic backups and user-level access control – all optimised for speed, accuracy, and operator confidence.



Optional: CH Series Booster System
For ultra-precise, high-pressure bending applications – such as boilers, heat exchangers, or superheating coils – the CH Series Booster upgrade delivers enhanced results in critical dimensions.
• Integrated Booster Cylinder
Installed within the pressure die head, aligned with the workpiece for full control.
• Dynamic Booster Control
Adjust booster pressure throughout the bend (0°–192°) via the machine interface.
• Secondary Clamp for Grip
Ensures secure material handling during boost-assisted bends.
This system enables