Portable grinder with quick-acting chucking device

A portable grinder including a motor-driven drive shaft and a chucking device for a brush-shaped grinding tool, said chucking device comprising

• a spindle arranged coaxially with said drive shaft and having an external free end being designed as a bayonet end,
• a spring for axially bracing said spindle against said drive shaft,
• a clamping lever for axially displacing said spindle relative to said drive shaft between a released position in which said bayonet end is extended and said spring is tensioned, and between a tightened position in which said bayonet end is retracted and said spring, is partly relaxed,
• an attachment collet being arranged on said brush-shaped grinding tool and having a bayonet opening for attaching said brush tool by engaging said bayonet end,
• wherein said brush-shaped grinding tool is removable from said bayonet end with said spindle being in said released position, wherein said brush-shaped grinding tool is joined to the drive shaft non-rotatably with said spindle being in said tightened position.