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   Part-turn Gearboxes GS, WSG/WGD,GHE  
     
 

AUMA part-turn gearboxes are used wherever a 90° swivel movement is required for the operation of a valve or damper. If the torque range of the part-turn actuators is no longer sufficient, a combination of multi-turn actuator SA ... and worm gearbox GS may be the solution. Torques of up to 675,000 Nm can be achieved.

  
     
 
   
 
     
 
Worm Gearboxes GS 50.3 - GS 630.3 and GS 315 - GS 500

Valve position indicator WSG 90.1 / WGD 90.1

 
 
 
 

AUMA worm gearboxes are used for the operation of part-turn valves  (e.g. butterfly valves, ball valves).

·         Type of duty:
Short-time duty S2 - 15 min (Open-close duty)
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)

·         Gearbox is prepared for mounting an actuator flange

·         Clockwise rotation at the input shaft results in clockwise rotation at the output drive  

Design features:

·         Torques up to 675,000 Nm

·         Reduction ratios from  39:1 to 3328:1

·         Swing angles up to 100°

·         Adjustable end stops (option)

·         Output drive according to ISO standard

Ambient conditions:

·         High enclosure protection

·         High quality corrosion protection

·         Wide ambient temperature range 

Options:

·         Swing angle > 100 ° or multi-turn (without end stops)

·         Worm wheel made of bronze for modulating applications

·         Clockwise rotation at the input shaft results in counterclockwise rotation at the output drive

 

 

 

 
 
 
 

If the valve position is transmitted via several stages to the limit switching in the multi-turn actuator, the accumulation of the backlashes can result in a hysteresis. 

The valve position indicator WSG can be used to avoid this effect. When directly connected to the worm wheel of the gearing, a precise position feedback with low backlash can be achieved

WSG 90.1 is used for swing angles up to 180°, WGD 90.1 for swing angles exceeding 180°.

The valve position indicator is designed for mounting to AUMA worm gearboxes GS 50.3 - 125.3/GS 160 - GS 500.

Design features:

·         Direct connection to the worm wheel (hardly any backlash)

·         Contactless end position sensors (Hall sensors)

·         Modular design - can easily be adapted to different gearbox sizes 

·         Can be positioned at every 90°

Ambient conditions:

·         High enclosure protection

·         High quality corrosion protection

·         Wide ambient temperature ranges

Functions:

·         Continuous mechanical position indication

·         Generation of a end position signal for swivel movements between 80° and 100° 
for transmission to the control room 

·         Continuous direct travel monitoring for transmission to the control room (option)

 
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