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The electric push-units of the heavy execution are integrated in the ARCA modular system and are applied where a robust design is required beside high control forces. The wide range of auxiliary equipments permits universal application in all industrial sectors.

The torque of the AC motor is transfered to a trapezoidal thread bushing by means of a gear. Inside the push-unit this torque is transformed into the valve stroke. Solid axial bearings take up the high forces of the actuating spindle.

The standard execution of the actuator is equipped with two torque switches and two limit switches. In case of disturbances the motor is switched off. Manual operations are possible during the control process.

The high protection class IP 67 guarantees a long duty life.
 
Techmical data
Torque
Pushing force
Stroke range
Kind of operation
Protection class

Ambient temperature
AC motor
isolation class F

Capacity
Frequency of switching
Min. impulse period
Standard execution
Auxiliaries		 30 - 250 Nm
10 - 50 kN
20 - 120 mm
S4/S5 - 25% ED acc. to VDE 0530
IP 67 acc. to DIN 40 050/IEC 529 resp. explosion-proof acc. to E Exed II CT 4
-20℃ - +60℃

380/415/500 V, 50 cycles
440/460 V, 60 cycles
0,025 - 0,75 kW
max. 1200 c/h
50 ms
2 torque switches, 2 limits switches, stroke indicator, hand adjustment
tandem switch, torque switch and limit switch, switch for intermediate position, potentioment, position transmitter (0) 4-20 mA, heating, compact design with integrated reversing contactors or thyristor control, run-out control, input 4-20 mA