Product category:
Tanks, pipework, nozzles, tube fittings
News Release from: Lee Products | Subject: Lee Minstac
Edited by the Processingtalk Editorial
Team on 15 March 2004
Minstac fittings help knee-brace take
the strain
Ability to handle high pressures, yet light and flexible for a knee brace: these were the requirements when sourcing for a high-tech knee brace, and Lee Minstac tubing and fittings were chosen
Ability to handle high pressures, yet light and flexible enough for a knee brace These were the essential requirements when the Penske company were sourcing components for their high-tech knee brace
This article was originally published on Processingtalk on 14 Aug 2008 at 8.00am (UK)
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Clearly, the physical demands placed upon the materials and components within such a product are unusual, if not unique.
The Lee Minstac system of tubing and fittings were chosen by Penske because of their ability to be flexible, yet strong enough to provide a leak-free performance, even under high pressure.
On one side of the knee brace is a cylinder, which acts as a reservoir for the hydraulic fluid, while on the other side of the brace is another cylinder which acts as a damper to control the rate of movement of the knee joint.
The basis of the Minstac tubing connection system is a collet-lock device which allows the end of the Teflon tubing to be chamfered and then threaded into a specially designed collet.
This assembly provides a leak-proof connection from the Teflon tubing to the wide range of Minstac components and fittings, all without the problems associated with Teflon cold flow characteristics.
The Penske knee brace features.156 Minstac fittings and Teflon tubing, which has an outside diameter of 3.96mm and uses a 0.25-28 UNF fitting end.
An internally threaded collet grips the outer diameter of the Teflon tubing end, preventing cold flow.
The chamfered end of the tubing is pressed against one end of the ferrule by the collet, while the other end is pressed against the sealing surface in the boss by a coupling screw.
Minstac tubing end connections are available in three standard outside diameter sizes, 1.57mm, 3.18mm and 3.96mm, with one or two fitting ends installed to satisfy most fluid handling requirements.
Special lengths and fitting assembly tool kits are also available. Request a free brochure from Lee Products ...
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