Symbols of Couplings and Mechanical Controls

These symbols indicate controls and mechanical coupling links, actions, connections... static or dynamic devices mechanically operated manually or automatically.

Symbology of Couplings and Mechanical Controls

Symbol Description Symbol Description
Link / Connection symbol Link / Connection
Mechanical, optical, hydraulic or functional
Generic symbol
  Link / Connection symbol Link / Connection
Delayed action symbol Delayed action   Delayed action symbol Delayed action
Direction of force or movement symbol Direction of force or movement   Sense of the strength of the movement of the rotation symbol Sense of the strength of the movement of the rotation
Locking device symbol Locking device   Symbol of the activated locking device, with left movement block Activated locking device, with left movement block
Coupling device or retention symbol Coupling device or retention   Symbol of the activated coupling device or retention Activated coupling device or retention
Brake symbol Brake   Symbol of the coupling device retention or released Coupling device retention or released
Mechanical clutch symbol Mechanical clutch   Mechanical clutch, clutched symbol Mechanical clutch
clutched
Mechanical clutch disengaged symbol Mechanical clutch
disengaged
  Symbol of the mechanical interlock between two devices Mechanical interlock between two devices
Automatic return symbol Automatic return
The triangle indicates the direction of the return
  Embedded ratchet symbol Embedded ratchet
no automatic return
Ratchet symbol Ratchet
no automatic return
  Ratchet released symbol Ratchet released
Mechanical gear symbol Mechanical Gear      
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