Selling Point Descriptions - Hitachi DS 9DVF Technical Data And Service Manual

4-1. Selling Point Descriptions

4-1-1. 22-Position Adjustable Torque Setting
The torque can be set finely thanks to the adoption of the 22 clutch positions to improve the operability.
Torque (N
Clutch position
4-1-2. Motor with Cooling Fan
The cooling fan incorporated in the motor and the air vents provided in its outer frame greatly enhance the cooling
effect, ensuring improved durability in continuous operation.
4-1-3. 10 mm (3/8") Keyless Chuck
The keyless chuck facilitates fast and easy replacement of driver bits. Replacement can be carried out simply by
holding the ring with one hand, while turning the sleeve with the other hand.
4-1-4. Variable Speed Switch with Braking Function
The braking function allows the driver unit to stop rotation immediately when the trigger switch is released, which
is a convenient feature during actual working. Also, the feedback system ensures a sufficiently large torque even
in the variable speed range.
m) (kgf cm)
• •
5.9 60
5.4 55
4.9 50
4.4 45
3.9 40
3.4 35
2.9 30
2.5 25
2.0 20
1.5 15
1.0 10
1 3 5
• •
Fig. 1 Clutch torque
Ring
Adjustable torque is about 0.2 N
at each click within the torque range
of 1.0 --- 5.9 N m.
•
7 9 11 13 15
• • • • •
Tighten
Loosen
Sleeve
Fig. 2
--- 2 ---
m
•
17 19 22
• • • •
Driver bit