Pascal discovered the principle. We put it to work.

The scientist Blaise Pascal formulated the principle of pressure propagation in liquids many years ago:
"A liquid confined in a vessel which is subjected to pressure distributes the pressure uniformly upon the walls of the vessel."
ETP has explored the many positive qualities in this principle, developed it further and applied it to hub-shaft connections and tool-holders.


The hydraulic ETP principle:

All products consist of a double-walled hardened steel sleeve, filled with a pressure medium. In the flange there are one or more screws and a piston with seals for the pressure setting. All work according to the hydraulic principle: when tightening the screw an even and moderately high surface pressure is created against shaft and hub. Mounting and dismantling is done in less than 10 seconds. The hydraulic principle gives advantages important for today´s modern machines. With increased requirements for compact designs, better concentricity/balance at increased machine speeds, shorter downtime for service and increased precision, the ETP products are choosen for more and more designs.



The hydromechanical ETP Principle:

For high torques, radial loads and big shafts the hydromechanical ETP principle is suitable. The products are mounted quickly and easily with a hydraulic pump. The hydraulics makes the mounting simple and gives a good runout. When the connection is mounted it is mechanically locked without any hydraulic pressure.



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Calculate your performance data when using our hydraulic ETP Hub-Shaft connections.