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Technology |
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The Dantorque actuator is based on the standard hydraulic drive
mechanism and standard disc spring packages (for spring-return actuators
only). It is a highly engineered product with interfaces and accessories
typically customized for each project.
The Dantorque range of actuators includes
double-acting and spring return actuators with torque outputs ranging
from max. 320 Nm (2800 in lb) to 406000 Nm (3595000 in lb).
For spring-return actuators spring end
output torques ranging from 110 Nm (970 in lbs) to 182500 Nm (1615125 in
lb).
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Output Hub |
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Helix Piston |
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Bottom Member |
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The output hub with its adapter interfaces with the valve stem. |
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The helix piston converts the Actautor linear action into a 90 degree
rotary movement. |
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The Bottom Member guides the output hub in
the main housing including bearings. Also the bottom member provides
sealing surfaces for internal and external seals.
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Main Housing |
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Turcon Variseal |
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The main housing contains the main operating
components of the hydraulic assembly. |
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Dantorque use the Turcon Variseal for all dynamic seals. This provides
good sealing efficiency in demanding applications. |
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Indicator Shaft |
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Spring Hub |
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The indicator shaft enables direct position indication. |
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The spring hub provides location for the floating spring package. |
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Connector Flange |
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Spring Package |
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The connector flange provides location for the spring housing. |
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The spring package stores and generates the force required to provide
the torque for the fail safe stroke of the actuator.Ball bearings
located in grooves between the Belleville disc springs keep the discs in
place and ensures smooth operation.
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Spring Housing |
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Spring Return Actuator |
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The spring housing contains the spring package. |
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Finally the hydraulic assembly is placed on the centre of the spring
assembly.The springs are compressed and a lock-ring put in place.
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