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Torque transmission

The torque produced by a mechanical seal's power consumption has to be transmitted from the shaft to the seal face and stationary seat, and the equivalent counter-torque has to be absorbed by the adjacent parts of the housing.

This torque transmission is performed by

  • form-locked transmission elements
  • friction-locked transmission elements
Form-locked transmission elements  :


Set screw with cone point,
DIN 914


Hexagon socket head screw and spigot


Set screw with cup point,
DIN 916


Set screw in the shaft


Straight
(parallel) pin


Kinked end of spring


Spring-loaded ball


Spring-loaded pin
(snap catch)


Claw


Drive key


Bead


Friction-locked transmission elements  :


Counter ring with single elastic bearing
(torque absorption by way of elastic O-ring compression)


Counter ring with  double elastic bearing
(torque absorption by way of elastic O-ring compression)


Clamping between flat gaskets


Self-clamping conical spring


Clamping collar


Shrink disk


Clamping set