Hitachi H 60MRV, Technical Data And Service Manual

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4-1. Selling Point Descriptions
4-1-1. High chipping and demolishing performance with low vibration and noise level
Demolition performance is 1.0 to 1.2 times higher than that of similar products thanks to the maximum 26.0 J
impact energy and efficient striking. The demolition performance is 1.0 to 1.2 times higher than that of similar
products. Even so, the Models H 60MR and H 60MRV produce equivalent or lower vibration and noise level than
that of similar products.
HITACHI
H 60MRV
HITACHI
H 60MR
Ratio of demolished weight %
Full-load vibration level dB (VL)
Full-load noise level dB (A)
No-load noise level dB (A)
100
121.5
91.5
83.0 81.0
Maker . Model
HITACHI
H 60MB
HITACHI
H 60MA
79
122.5
94.0
84.0 82.0
B C
98
122.5
94.0
83.0
85
123.0
94.5
80.0
4-1-2. Internal double-insulation construction with sturdy aluminium frame
The aluminum die-cast outer frame is very sturdy (highly rigid). In addition, a plastic internal stator holder is
adopted to realize double-insulation construction. Thus the housing has greater rigidity and the double-insulated
motor has greater durability. The Models H 60MR and H 60MRV are heavy-duty and the service life of the carbon
brushes is prolonged, minimizing disconnection of the armature, deviation of the core and grease leakage.
4-1-3. Soft-touch grip for easier handling
The double-layer molded handle consists of a nylon resin base covered with a soft plastic layer to ensure a soft
touch and firm, non-slip grip of the handles.
4-1-4. D-type side handle with adjustable mechanism for 360 û rotation plus positioning from front to rear
The D-type side handle can be adjusted by 360 û rotation and also allows convenient operation from front to rear.
This side handle has a two-layer plastic construction (integral molding) made of nylon resin as the base and soft
resin around it for a comfortable cushion grip.
4-1-5. Shock absorbing mechanism results in prolonged service life
At the instance of releasing the tool from the workpiece by moving the main body up, the cushion (damper (B))
between hammer holder (B) and the front cover absorbs the striking force of the second hammer. In addition, the
cushion (damper (C)) between the retainer sleeve and the front cover absorbs the striking force of the tool when it
pops up. Thus the Models H 60MR and H 60MRV have greater durability than the similar products.
4-1-6. Simply turning method, variable lock mechanism for easy working-angle adjustment of chisels, etc.
The tool swivel angle can be easily changed in 12 steps by pushing out grip (B) ahead and then turning grip (A).
4-1-7. Constant speed and variable speed control (Model H 60MRV only)
The Model H 60MRV is equipped with an electronic control circuit for stepless adjustment of striking speed. The
striking speed can be adjusted between 930 to 1,650 times per minute by turning the dial according to the
operation (chipping and demolishing) and the workpiece (Fig. 1). The constant speed control provides excellent
operability. The table below shows the striking speed per minute of each dial setting.