- Creates secure, leak-proof joints between ductile tubular products and fittings.
- Mechanically joined joints will not leak, pull apart, or vibrate loose due to temperature change or pressure.
- Superior to a welded, brazed, or crimped joint.
Roll to a torque or diameter spec
- Rolling to a torque ensures consistent results regardless of tolerance and variations of the tube OD, wall thickness, and component ID.
- Rolling to a diameter guarantees a consistent ID of the tube. This makes it possible to “iron out”and round up the ID of the tube.
- Practically every tubing material except plastic can be mechanically joined, providing the tube is annealed or is ductile.
- Annealed and ductile materials include: steel, stainless steel, aluminum, titanium, copper, cupronickel, iconel, etc.
- Limited training required to operate
- Used on manual electric rolling motors, special machines and in rare cases on CNC machines.
1) 0% Expansion
The tube is inserted into the flange and the mechanical joining tool is inserted into the tube.
1) 25% Expansion
When the tube has been rolled to roughly 25% of the total expansion required, the tube will make metal-to-metal contact with the flange.
3) 50% Expansion
At this point the tube metal has begun to flow into the grooved serrations of the flange.
4) 100% Expansion
Grooved serrations are now completely filled and the tube metal has flowed to the point of least resistance beyond the flange resulting in a mechanically formed joint that will not leak, vibrate loose or pull apart.
Technical Reference and Downloads
View the Mechanical Joining Tool in action: