Makita SJS Range of Metalworking Angle Grinders
2,293 views · Published 7 July 2009 · 3:08 · Indexed 28 September 2026
Channel: Toolstop (Now ITS.co.uk) · 2009 · Education
http://www.toolstop.co.uk Makita's Super Joint System. With the rotation of the armature the coil spring is extended, its tightening force increase the grasp of the coil on the armature spindle and shaft. At this point the gear and spindle start to rotate simultaneously. Against the shock of accidental spindle lock or overload, which surpasses the limited torque designed for the tool, the coil spring will override the armature shaft preventing damage to the armature and internal components.
