Air cylinder offers alternative to hydraulics
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Jato Precision product story
Edited by the Engineeringtalk editorial team
Oct 6, 2006
New from Jato Precision is the JAC932-DM open-centre air cylinder (collet closer).
New from Jato Precision is the JAC932-DM open-centre air cylinder (collet closer).
The JAC932-DM provides 11.5kN pulling force and high speed up to 5000rev/min.
The JAC932-DM is designed to be direct-mounted onto the spindle without any adapter.
Compared with hydraulic cylinders which are now frequently used in the industry, air cylinders are much more clean, and able to provide higher speed and performance.
Using an air cylinder can also save users more money because they do not have to purchase any oil pump, tank and oil cooler.
However, with the advantages mentioned above, the air cylinders are still not so popular in today's market, since most of the manufacturers could not overcome the major problem - air leakage between the rotary and stationary part of the cylinder - when designing an air cylinder.
Air leakage makes it impossible for the air chamber of the cylinder to contain enough air pressure for the piston to actuate, and the air leakage problem will get worse as the radial position of the clearance increases.
That is why 90% of air cylinders in the market are close-centre design (without through hole).
It is much easier to build a closed-centre air cylinder than to build an open-centre one.
The Jato JAC932-DM air cylinder (collet closer) overcomes the air leakage problem by using Jato's unique air containing construction and by minimising clearance down to 0.002in.
The air leakage of a JAC932-DM can be controlled to an extremely low value and the pulling force can be up to 11.5kN.
It also makes it possible for the JAC932-DM to have a large through hole up to 2in, making bar parts machining possible in an air cylinder application.
This air cylinder technology has also used in our other product lines, such as built-in cylinder diaphragm chucks and built-in cylinder collet chucks.
The JAC932-DM is our first product in Jato's air cylinder product line.
It is specially designed for bench lathes and auto lathe builders.
JAC932-DM has been proven to be a very reliable and high performance product, and has already taken about 10% of the small lathe cylinder market in China that is formerly occupied by hydraulic ones.
Jato's new series of CNC open-centre air cylinders that are with single or double piston, larger pulling force and larger acting stroke will be available in 2007 to further strengthen Jato's air cylinder product line.
And in terms of installation, they will be designed to be identical with CNC hydraulic cylinders now are in the market.
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