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Applications:
Part turn actuators are used fot
the automation of
valves, which are controlling the flow of different medias (fluid, gas)
or granulated material.
External seviceable travel stops for open and close position
allow a fine adjust- ment of ± 4°. This special feature eliminates alignment
problems due to a clearance of connections between the stem of the valve adaptor
and the shaft of the actuator.
Due to a triple bearing of the piston all actuators have a constant
torque, even
under high load. Beside the guides on the outside of the piston there is an additional
guide inside which absorbs the cross load through the integrated support at the drive
shaft.
The drive shaft is held in position by two bearings, one at the top of the
pinion,
one at the bottom. These guarantee less friction and abrasion-free
operation. Due
to the special design of the bearings at the shoulders of the piston, the drive shaft
is blowout proof and fulfills the hard US-standards for product
liability.
The drive shaft has a 25-30 µm electroless nickel coating (Protection E ->
Stainless steel).
The bearings are temperature resistant to 155°C. Because of an internal retaining
shoulder the bearings are blowout safe.
The maintainance free springs allow a safe and simple assembly and
disassemb- ly. The
adaptation of the AT - actuators to your working conditions with the recommended
pneumatic pressure can so be arranged. The conversion of a double acting to a spring
return actuator can be easily managed. Only the necessary springs have to be
mounted.
This advantage of AT - actuators reduces stocking costs
significantly.
Silicon free:
All actuators are silicon free according to the automobile industry
recommen- dations.
Serial inspection:
Each actuator has to pass a comprehensive serial inspection with e.g. a tightness
/ density check and a torque check. After passing the inspection the actuator is
given a serial number according to ISO 9001.
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