Product category:
Pneumatic Actuators, Motors, Accessories
News Release from: Jato Precision | Subject: JAC932-DM
Edited by the Engineeringtalk Editorial
Team on 06 October 2006
Air cylinder offers alternative to
hydraulics
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
This article was originally published on Engineeringtalk on 29 Sep 2006 at 8.00am (UK)
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Collet chuck cuts out hydraulics
The Jato JAP200 cylinder-integrated collet chuck is specially designed to provide customers with unmatchable convenience to set up their collet chuck systems.
Diaphragm chuck comes with its own cylinder
With its built-in air cylinder and repeatability of 0.001mm, Jato Precision reckons the JAP100 cylinder-integrated diaphragm chuck stands out among other chucks in the workholding market.
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.
Further reading
Collet chuck suits B42 collets
Jato Precision's JAP207-B42 collet chuck has a built-in air cylinder, removing the need to purchase and install a hydraulic system.
Higher torque from AC servo actuator
The TPMA high-torque AC servo actuator is a higher-torque version of the successful TPM servo actuator from Alpha Gear Drives.
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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