Discover the engineering facts behind your Bosch 18V hammer drill's sudden torque failure.
Bosch drills use a spring-loaded ball-detent system that triggers when chuck resistance exceeds spring pressure.
The familiar clicking sound occurs when detent balls are pushed out of their seats prematurely.
Over time, grease separates and migrates, reducing necessary friction and ruining your torque settings accuracy.
Hardened steel balls can create flat spots or wear down housing pockets, necessitating a rebuild.
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