Hitachi DH50MB Instruction Manual - Page 15

How To Use The Core Bit - sds max

Page 15 highlights

English (1) Switching to "rotation + hammering" For switching to "rotation + hammering", follow the same procedures mentioned in [3. When drilling at "rotation + hammering"] in Page 12. (2) Attaching chuck adaptor to drill chuck (Fig. 14) (a) Attach the chuck adaptor to the drill Drill Chuck SDS max Shank Grip Chuck Adaptor chuck. Fig. 14 (b) The SDS max shank of the chuck adaptor is equivalent to the drill bit. Therefore, follow the same procedure as [6. How to install tool] in Page 10 for attaching and detaching. (3) Drilling (a) Even if you apply more-than-required pressure to the machine body, drilling can never be performed as quickly as you expect. Applying more force or pressure to the machine body than what is needed, on the contrary, damages the drill tip, resulting in the declined working efficiency and shortened life of this machine. (b) A drill can snap sometimes when drilling is almost finished. It is important to relax your thrusting pressure when drilling is nearing the end. HOW TO USE THE CORE BIT When boring penetrating large hole use the core bit. At that time use with the center pin and the core bit shank provided as optional accessories. 1. Mounting CAUTION: Be sure to turn power OFF and disconnect the plug from the receptacle. Core Bit (1) Mount the core bit to the core bit shank. (Fig. 15) Lubricate the thread of the core bit shank to facilitate disassembly. Core Bit Shank Fig. 15 15

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15
English
(1) Switching to “rotation + hammering”
For
switching
to
“rotation
+
hammering”,
follow
the
same
procedures mentioned in [3. When
drilling at “rotation + hammering”] in
Page 12.
(2) Attaching chuck adaptor to drill chuck
(Fig. 14)
(a)
Attach the chuck adaptor to the drill
chuck.
(b) The SDS max shank of the chuck
adaptor is equivalent to the drill bit.
Therefore,
follow
the
same
procedure as [6. How to install tool]
in Page 10 for attaching and
detaching.
(3) Drilling
(a)
Even if you apply more-than-required pressure to the machine body, drilling
can never be performed as quickly as you expect. Applying more force or
pressure to the machine body than what is needed, on the contrary, damages
the drill tip, resulting in the declined working efficiency and shortened life of
this machine.
(b) A drill can snap sometimes when drilling is almost finished. It is important to
relax your thrusting pressure when drilling is nearing the end.
HOW TO USE THE CORE BIT
When boring penetrating large hole use the core bit. At that time use with the center
pin and the core bit shank provided as optional accessories.
1. Mounting
CAUTION:
Be sure to turn power OFF and disconnect
the plug from the receptacle.
(1)
Mount the core bit to the core bit shank.
(Fig. 15)
Lubricate the thread of the core bit
shank to facilitate disassembly.
Drill
Chuck
Grip
Fig. 14
SDS max
Shank
Chuck
Adaptor
Fig. 15
Core Bit
Core Bit
Shank