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8-7. Tool Retainer
The tool retainer is structured as shown in Fig. 12. The tip of the tool retainer is covered with the front cap (made
of rubber) to prevent dust and chips from getting inside. The steel ball falls into the round groove of the bit to
prevent the tool from coming off and the two key rails transmit the rotation torque.
To mount the bit, push the bit in the tool retainer as far as it will go. Pushing lightly, turn the bit until it is caught.
At this position, slide the grip backward to the full. Release the grip. The grip is then returned to the original
position and the bit is fixed. Pull the bit to check whether it is securely fixed or not. To remove the bit, slide the grip
backward to the full and remove the bit.
Fig. 12
Washer (D)
Grip
Steel ball
Retainer spring
Front cap
Ball holder
Stopper ring
Key rail
Retainer sleeve
