Instrumented electric nutrunner Cooper Tools Cleco
Stall-type nutrunners consist of an air motor
connected to the output spindle by planetary gearing
and angle heads. In operation, the tool runs down
the fastener until the torque resistance in the
fastener causes the tool to stall. When the tool stalls,
the throttle is released by the operator and the tool is
removed. Stall-type tools can produce accurate
torques, especially on applications with varying
torque rates
