Hitachi WH 14DMR Technical Data And Service Manual page 11

Models WH 18DMR/WR 18DMR
Model
Item
Capacity
Tightening torque
Tip condition
Type of motor
Enclosure
Type of switch
Handle configuration
No-load rotational speed
Impact rate
Main body
Weight
Battery
Overall length x height
Center height
Battery
(Type EB 1820L)
Battery
(Type EB 1826HL/
EB 1830HL)
Charger
(UC 24YFA)
Cordless impact driver
WH 18DMR
Small screw M4 --- M10 (5/32" --- 3/8")*
Ordinary bolt M6 --- M14 (1/4" --- 9/16")
High-strength bolt M6 --- M12 (1/4" --- 15/32")
150 N m (1530 kgf cm, 1330 in-lbs.)*
• •
6.35 mm (1/4") Bit holder
Fan cooled rare-earth magnet motor
Main body: Polyamide resin + elastomer
Aluminum alloy die casting
Elastomer
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Storage battery: Polyamide resin (black)
Charger: ABS resin (black)
Trigger switch with forward/reverse changeover pushing button (with brake)
T-type
0 --- 2,600 /min
0 --- 3,200 /min
2.0 kg (4.4 lbs.) (Includes battery)*
1.04 kg (2.2 lbs.)
162 mm (6-3/8") x 236 mm (9-19/64")
27 mm (1-1/16")
Sealed cylindrical nickel-cadmium batteries
Nominal voltage: DC 18 V
Nominal life: Charging/discharging approximately 300 cycles
(in the case of the Model UC 18YG)
Nominal capacity: 2.0 Ah
Sealed cylindrical nickel-metal hydride batteries
Nominal voltage: DC 18 V
Nominal life: Charging/discharging approximately 500 cycles
(in the case of the Model UC 24YFA)
Nominal capacity: 2.6 Ah/3.0 Ah
Overcharge protection system:
(1) Battery voltage detection (
Mi-MH battery temperature detection (dT/dt system) for Ni-MH battery
(2) Battery surface temperature detection (thermostat or thermistor)
(3) 120-minute timer
Power input: 90 W
Charging time: Approx. 50 minutes [for type EB 1820L battery at 20ûC (68ûF)]
Approx. 60 minutes [for type EB 1826HL battery at 20ûC (68ûF)]
Approx. 70 minutes [for type EB 1830HL battery at 20ûC (68ûF)]
Operable ambient temperature range: 0ûC --- 40ûC (32ûF --- 104ûF)
The maximum allowable temperature of the EB 1820L battery is 60ûC (140ûF) and
the type EB 1826HL or EB 1830HL battery is 45ûC (113ûF).
1 Ordinary bolt M10 --- M16 (3/8" --- 5/8")
High-strength bolt M8 --- M14 (5/16" --- 9/16")
2
220 N
12.7 mm (1/2") Square drive
Housing
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Hammer case
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Protector
4
167 mm (6-37/64") x 236 mm (9-19/64")
2 V system) for Ni-Cd battery
--- 8 ---
Cordless impact wrench
WR 18DMR
m (2245 kgf cm, 1950 in-lbs.)*
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3