Spindle device for power tool, e.g. hammer drill, includes adjustment part for altering spring in safety connection

摘要

An adjustment part (7) is provided for altering the spring profile of the spring (6) for the safety connection (3) for protecting the output shaft (2) against excessive torque. The device comprises an output shaft and an adjustable safety connection which is disconnected when a given torque force is exceeded. The safety connection comprises two cooperating coupling parts (4, 5) held together by a spring used to set the torque force limit.