Guide-bar device for a single spindle lathe

A guide bar device for a single spindle lathe, comprising:

• a guiding means for rotatably supporting a length of bar stock, said guiding means comprising a fixed tube and a free tube disposed inside said fixed tube, said free tube being adapted to rotatably receive a length of bar stock herein;
• a sectional carrier means for supporting said guiding means, said sectional carrier means being removably secured to said guiding means;
• a push-piston means, at least partially disposed in said guiding means, for controlling advancement of the bar stock;
• an injection means, hydraulically coupled to said push-piston means, for distributing fluid, said injection means comprising:
• a first means for supplying pressurized fluid to said free tube and said fixed tube whereby a first hydrodynamic bearing is created between said bar stock and said free tube and a second hydrodynamic bearing is created between said free tube and said fixed tube, said first means comprising:
• a second means for supplying pressurized fluid to a first end of said push-piston means;
• and
• a distribution channel means, formed in said sectional carrier means, for distributing pressurized fluid to said guiding means;
• and
• a return channel means for returning fluid from said guiding means to said injection means.