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A linkage is a group of rigid links or levers connected together to create a range of movement. Linkages are used to change the type, direction and/or force of a motion.

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Bell crank linkages

  • A bell crank linkage changes the direction of motion through 90°.
  • It can be used to change a side to side (horizontal) motion to an up and down (vertical) motion.
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Push/pull linkages

  • The push/pull linkage keeps the direction of motion the same for the input and the output.
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Reverse motion linkages

  • The reverse motion linkage reverses the motion of the input and giving an opposite output motion.

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