Machine Description
The Tube Expanding SPM is a precision-
engineered machine used to expand the ends
or full length of metal tubes to meet specific
dimensional or assembly requirements. This
special-purpose machine is ideal for
applications such as automotive exhaust
systems, EGR tubes, heat exchangers, and
flexible metal hose assemblies, where
precise expansion ensures tight fitment,
improved sealing, or preparation for welding or
coupling. Designed for high accuracy and
repeatability, it operates using hydraulic or
servo-driven expanding mandrels and offers
quick tooling changes for different tube
sizes.
Features
• Designed for axial or radial expansion of metal tubes
• Compatible with SS304, SS316, SS321, Copper, MS, and Inconel
• Custom die and mandrel setup for precise expansion profiles
• Hydraulic or servo-driven expansion system
• Heavy-duty structure for high-repeatability and durability
• Suitable for single-end or dual-end expansion (customizable)
• Foot pedal or PLC-based control for semi-automatic operation
• Quick tool change mechanism for efficient batch production
Technical Details
| Parameter |
Specification |
| Tube Material |
SS304, SS316, SS321, MS, Copper, Inconel |
| Tube Diameter Range |
12mm to 100mm (customizable up to 150mm) |
| Expansion Length |
Up to 200mm (longer lengths on request) |
| Expansion Type |
Internal Mandrel / External Die |
| Drive Type |
Hydraulic / Servo Motor Driven |
| Operation Mode |
Semi-Automatic with Foot Switch / PLC Control |
| Power Supply |
3-Phase AC Industrial Power |
| Cycle Time |
10–30 seconds per tube (depending on size) |
| Safety Features |
Emergency Stop, Limit Switches, Overload Safety |
Application
• Automotive exhaust tube expansion
• Heat exchanger tube end expansion
• Flexible metal hose assembly preparation
• Expansion of EGR tubes and bellows before welding
