Tri Tool 301E Tube Squaring Machine
The Tri Tool 301E is an electric tube squaring machine that holds straight tubing in an OD collet for weld-end preparation. The Model 301 specification covers 0.125–1.102 inches tube OD (3.2–28.0 mm), with walls up to 0.125 inch (3.2 mm). Justram can confirm the collets, motor and cutting bits for the supplied machine.
Collet-supported tube end preparation
The 301E faces tube ends before autogenous welding. An external collet supports and centres the tube, while a cam-operated feed handle advances the bit. Depending on the selected tooling, the head can perform squaring, beveling, J-beveling or ID deburring.
The OD mounting arrangement leaves the bore free of an internal mandrel. For electropolished or cleanliness-sensitive tubing, specify contact materials, lubrication and cleaning requirements with the machine package.
Model 301 specifications
| Specification | Listed value |
|---|---|
| Tube outside diameter | 0.125–1.102 in (3.2–28.0 mm), with suitable 100-series collets |
| Maximum listed wall thickness | 0.125 in (3.2 mm), subject to material and operation |
| Feed travel | 0.200 in (5.1 mm) |
| Mounting | OD collet nut; optional Quick Lock clamping system |
| 301E drive | Variable-speed electric; confirm voltage and motor configuration |
| Listed machine weight | 6.75 lb (approximately 3.1 kg); confirm the supplied motor/package |
These dimensions refer to the Model 301 collet machine. Match the technical document and collets to the exact unit; related saddle-mounted 301SP and STS tools have different ranges and mounting arrangements.
Clamping, drive and tool options
The Quick Lock option uses a single lever for clamping and can be reviewed for compatible collet-nut machines. A bench base is available for suitable shop setups. Confirm retrofit parts and the included collets before ordering.
The wider Model 301 family includes pneumatic and cordless versions. Legacy literature describes a 14.4 V cordless drive; confirm battery and charger support for the specific unit. This listing identifies the 301E electric configuration.
Provide the tube material and wall thickness when selecting bits. Carbon steel, stainless steel, copper-nickel and aluminium require appropriate cutting conditions; high-temperature alloys such as Inconel may need special procedures.
Request the right tube-squaring setup
Send Justram the actual tube OD, wall, material, end-preparation drawing and preferred power supply. Include the available straight clamping length and any cleanliness requirements. For a saddle-mounted alternative, compare the Tri Tool 300STS machines.
The manufacturer-authored Model 301 technical specification (January 2001, PDF) is a legacy reference; confirm applicability to the supplied unit.
