AUMA worm gearboxes are used for the operation of part-turn valves and special valves (dampers, flue gas dampers, etc.).
Type of duty: Short-time duty S2 - 15 min (Open-close duty) and inching/positioning
Intermittent duty S4 - 25 % (Modulating duty only bronze)
They can either be operated in:
- manual operation directly via handwheel
- motor operation (electric multi-turn actuator)
Swing angle 0° to 190° or multi-turn without endstop
Design features
Torque range up to 675,000 Nm
Reduction ratios from 39:1 to 3328:1
Swing angles up to 190°
With or without primary reduction gearing
360° worm wheel
End stops with travelling nut principle in accordance with AWWA C504
Output drive according to ISO standard
adjustable end stops
All parts within the power drive have been subjected to thermal hardening
Ambient conditions
Enclosure protection IP68
High quality corrosion protection
–60 °C to +120 °C