230 V AC, 115 V AC, 24 V DC (further electrical currents on request)
Wide torque range
Wide range of positioning times
Constant positioning times under fluctuating loads
Up to four auxiliary position switches possible
Wide selection of output shafts
Custom shafts possible
Solid metal housing
Operates in any position
The NK series of compact part-turn actuators is designed to control smaller and smooth-running valves utilized in industrial applications. The robust construction and metal housing made of a die-cast zinc alloy that offers protection class IP65 as well as the extremely compact design ensure these actuators are both suitable for harsh operating environments and installation in confined spaces.
When fitted with optional indicators and TUV-approved potentiometers for electronic fuel/air ratio control systems these compact actuators are ideally suited for use in industrial furnace installations and combustion plants.
Single-phase AC synchronous motor with permanent magnet, reversible
230 V ± 10%, 50/60 Hz ± 5%
ON time 100% duty cycle on request
Short start/stop times
Insulation class B to VDE 0530
Synchronous motors maintain speed and constant positioning times irrespective of the load
Spur gearing with straight-toothed steel gears
Permanently lubricated gears
Self-lubricating sintered bronze bearing
Encapsulated version, operates in any position
Ø 10 mm, form D
Alternative diameters and forms to customer requirements on request
Depending on the version it is possible to retrofit between one to four additional auxiliary position switches
Additional potential-free switching contacts
Electronic position controller ESR-NK (integrated in actuator)
Potentiometer 200 ? … 10 k?
-15 °C to +60 °C
0 °C to +60 °C when utilizing electronic position controller ESR-NK
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