Automatic machining of the stem column. Automatic execution of the following operations:

• Tube loading.
• Positioning of the tube.
• Single and/or double reducing/tapering of one extremity of the tube by one or two working stations.
• Possible cutting at different degree of one extremity.
• Possible cutting at different degree of the second extremity.
• Safety marking.
• Calibration of one extremity.
• Possible calibration of the second extremity.
• Automatic piece unloading.

Automatic loader to combine/connect to the machine complete with hopper containing tubes with feeder to select and transport the same to the position of  machine loading.