Machine Description
The Bellow I/O Sizing Machine is a precision
special-purpose machine designed to calibrate
both the inner and outer diameters of metallic
bellows, ensuring tight dimensional tolerances
and perfect roundness before welding or final
assembly. This machine enhances fitment
accuracy between the bellow and its mating
components (such as end caps, pipes, or
flanges), ensuring leak-proof and structurally
sound assemblies. Ideal for automotive exhaust
bellows, EGR connectors, and expansion
joints, the system provides consistent,
repeatable results across production batches.
Features
• Simultaneous inner and outer diameter sizing for bellows
• Ensures perfect roundness, tight tolerances, and proper fitment
• Hydraulic or pneumatic force for controlled expansion/compression
• Compatible with SS304, SS316, SS321, Inconel, and more
• Quick-change sizing dies for different bellow sizes
• Rigid machine frame minimizes vibration during operation
• Available in manual, semi-automatic, or PLC-controlled variants
• Ideal for pre-welding or post-forming calibration
Technical Details
| Parameter |
Specification |
| Bellow Diameter Range |
40mm to 150mm (customizable) |
| Sizing Type |
Inner (ID) and Outer (OD) Sizing |
| Material Compatibility |
SS304, SS316, SS321, Inconel, MS |
| Actuation System |
Hydraulic / Pneumatic |
| Tooling |
Interchangeable Sizing Dies (Hardened Steel) |
| Cycle Time |
10–25 seconds per unit (depending on size) |
| Operation Mode |
Semi-Automatic / Manual / PLC Control |
| Power Supply |
3-Phase AC + Pneumatic Line (if applicable) |
| Safety Features |
Emergency Stop, Guarded Press Area |
Application
• Automotive exhaust bellow and EGR tube preparation
• Expansion joint and flexible connector manufacturing
• Dimensional calibration for leak-proof welding
• Tube-to-bellow joint fitment and sealing accuracy
• Standardization of bellows for modular assembly.
