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Tool holder
The tool holder is described below with reference to Fig. 8. As shown, three saddle keys are received in the
three respective elongated holes equidistantly located at the front cover. The cross sectional view A-A
illustrates the mode in which an end attachment tool is held in position. With the grip turned in direction A, the
saddle keys are shifted out of the holes to unlock the attachment tool from the tool body.
When fitting the attachment tool, turn the grip fully in the A direction, insert the tool shank deeply until it hits
against the hole end. Then, turning the grip fully in B direction causes the attachment tool to be securely held
in position. In contrast to the previous knob-retaining structure, the DH 45SA uses three saddle keys locked by
turning the grip, which are able to securely hold the tool with a minimized deflection of the drill bit or other
attachment tool.
Front cover
Section A - A
Saddle key holder
A
Tool
Grip
B
Front cover
Saddle key
Tool
Saddle key holder
Grip
Saddle key
Fig. 8
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