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shear pin

   Also found in: Encyclopedia, Wikipedia 0.02 sec.
shear pin
n
(Engineering / Mechanical Engineering) an easily replaceable pin inserted in a machine at a critical point and designed to shear and stop the machine if the load becomes too great


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The locking arrangement has a shear pin which in case of forced opening can make the handle free spin and keep the locking mechanism safe.
One swift kick to the stick, and you can roll the automatic roller detent decoupler (ARDD) on the D model or break a shear pin on the A model.
Failures cause downtime, add expense and endanger the environment Co and can be caused by a number of factors including downhole temperatures, inconsistent shear pin mounting holes, various wear factors and corrosion.
 
 
 
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