KNDA/KNSA Series Scotch Yoke Pneumatic Actuator
Conditions
1. Temperature: From 0℃ ~ ＋80℃ ;
Indry air from -20℃ ~ ＋80℃ (Special model:High temperature: from -20℃ ~＋150℃ , Low temperature: from - 40 ℃ ~＋ 80 ℃ )
2. Air pressure: 4-6bar，maximum working pressure 10bar；
3. Air supply:filtered and dried compressed air,without lubrication;
4. Inwet conditions, use detergent free oil or oil suitable for NBR.
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Parameter
- Connection standad: UNI EN ISO 5211 ;
- F03-F04-F05-F07-F10-F12-F14-F16-F25 ;
- Conform to the standard of UNIEN 15714-3: 2009 ;
- Auxiliary connection:NAMUR；
- Angle: 90° ；
- Torque:Directly proportional to control pressure (see attached table)
Summary
- Open and close torque, more suitable for butterfly valve, ball valve controls
One of the movement characteristics of butterfly valve and ball valve is the starting point and closing point need the largest torque, the same, fork type pneumatic actuator operation, lose the output torque can change wth the Angle and when the valve is opened or closed the position provides the maximum torque value, which corresponds exactly to the torque required by the valve match, open and close the valve more smoothly.
- Small size, lightweight, easy to install
Due to its unique scotch type large torque structure, it is lighter than the rack type pneumatic actuator under the same output torque condition, and its volume and weight can be reduced by 30%.
- Operation faster
Compared with the same torque pinion and rack type pneumatic actuators, the cylinder is smaller and the switching speed is increased by 40%, especially suitable for high frequency fast and other harsh working conditions.
- Small gas consumption, energy saving and environmental protection
Compared with rack and pinion type, reduce the consumption of air (double action reduces 40%. single action reduces 20%) reduce the amount of wrk of the compressor, save electricity, you can choose smaller specifications of compressor.
- Longer service life
KNDA/KNSA scotch yoke actuators transform traditional sliding friction into rolling friction, aluminum alloy piston and steel shaft is not directly connected, which greatly reduce the wear of transmission parts: Smooth wear-resislant bushing and multi-point guide sealing make that the sealing performance is improved at the same time to support and solid, also can make the piston and scotch in the process of motion more stable, so that the service life can reach more than 1000000 times.
- Higher adjustment accuracy
Scotch, transmission parts such as ball have strict machining accuracy, and the comprehensive transmission matching accuracy is controlled below 0.1mm, which is suitable for high adjustment conditions.
