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4) Tightening conditions
Tightening torque will vary, even with
the same bolt, according to grade,
length, and torque coefficient (the
fixed coefficient indicated by the
manufacturer upon production).
Tightening torque will vary, even with
the same bolting material (e.g. steel),
according to the surface finish.
Torque is greatly reduced when the
bolt and nut start turning together.
5) Socket play
Torque is lowered as the six-sided
configuration of the socket of the wrong
size is used to tighten a bolt.
6) Switch (Variable speed control trigger)
Torque is lowered if the unit is used with
the switch not fully pulled out.
7) Effect of connecting adaptor
The tightening torque will be lowered
through the use of a universal joint or a
connecting adaptor.
VI
. ACCESSORIES
Use only bits suitable for size of drill’s chuck.
Use Panasonic original Optional Keyless drill chuck (EY9X003E) and Quick change chuck
(EY9HX110E) for maximum performance.
MAXIMUM RECOMMENDED CAPACITIES
Model
EY7270/7271
Screw
driving
Wood screw
3.5 - 9.5 mm (1/8" - 3/8")
Tech screw
3.5 - 6 mm (1/8" - 1/4")
Bolt fastening
EY7270 EY7271
Standard bolt: M6 - M12 M6 - M16
High-tensile bolt: M6 - M10 M6 - M12
VII
. SPECIFICATIONS
MAIN UNIT
Model EY7270 EY7271
Motor voltage 12 V DC
No load speed
Soft impact mode: 0 - 1000/min (rpm)
Medium impact mode: 0 - 1400/min (rpm)
Hard impact mode: 0 - 2300/min (rpm)
Maximum torque
135 Nm
(1380 kgf-cm, 1190 in-lbs.)
165 Nm
(1680 kgf-cm, 1460 in-lbs.)
Impact per minute
Soft impact mode: 0 - 2000 ipm in Impact Mode
Medium impact mode: 0 - 2500 ipm
Hard impact mode: 0 - 2800 ipm in Impact Mode
Overall length
169 mm 177 mm
Weight (with battery pack) 1.8 kg (4.0 lbs) 1.8 kg (4.1 lbs)
EY7270(EU).indb 12 2006/05/25 13:25:07