Download DH 22PG - hitachi

SELLING POINT DESCRIPTIONS
Most compact and lightweight in its class*
* Based on our own research
The Model DH 22PG is most compact and lightweight in its class thanks to the optimum striking
mechanism.
HITACHI
Maker
Model
DH 22PG
B
C
Overall
length
289 mm
342 mm
352 mm
Weight
1.9 kg
2.3 kg
2.3 kg
289 mm
Internal pressure adjustment mechanism
An air passage is provided as shown below to let out air inside the gear cover and let outside air in the gear
cover. This passage is sandwiched between felt packings to pass only air. Thus variations in the internal
pressure are minimized for stable hammering operation and prevention of grease leakage.
A-A
(Inside the Gear cover)
Air passage
(Outside the
gear cover)
Felt packing (B)
Valve
Felt packing (A)
Inner cover
Idle striking prevention mechanism
When the drill bit is lifted from the concrete surface, the reciprocating bearing that converts rotation into
reciprocating motion stops to prevent idle striking. Thanks to this mechanism, vibration and noise during
no-load operation are reduced.
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