-
14
-
Torque is greatly reduced when the bolt
and nut start turning together.
5) Socket play
Torque is lowered as the six-sided configu-
ration 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 depressed.
7) Effect of Connecting Adaptor
The tightening torque will be lowered
through the use of a universal joint or a
connecting adaptor.
VIII. ACCESSORIES
Use only suitable size of bit.
Panasonic original Optional Quick change chuck (EY9HX110E).
Chuck Size: 6.35 mm (1/4”) hex
IX. APPENDIX

MAXIMUM RECOMMENDED CAPACITIES

Model EY7546 EY7547 EY7550 EY7551
Screw driving Wood screw 3.5 mm - 9.5 mm
Self-drilling screw 3.5 mm - 6 mm
Bolt fastening Standard bolt:M6-M16
High tensile bolt
: M6 - M12
X. SPECIFICATIONS

MAIN UNIT

Model EY7546 EY7547 EY7550 EY7551
Motor voltage 14.4 V 18 V
No load speed soft mode 0 - 1000 min-1 (rpm)
medium mode 0 - 1400 min-1 (rpm)
hard mode
0 - 2500 min-1 (rpm) 0 - 2300 min-1 (rpm) 0 - 2500 min-1 (rpm) 0 - 2300 min-1 (rpm)
Maximum torque
150 N·m (1330 in.Ibs) 200 N·m (1770 in.Ibs) 155 N·m (1370 in.Ibs) 205 N·m (1815 in.Ibs)
Impact per minute soft mode 0 - 2000 min-1 (rpm)
medium mode 0 - 2800 min-1 (rpm)
hard mode
0 - 3000 min-1 (rpm) 0 - 3500 min-1 (rpm) 0 - 3300 min-1 (rpm) 0 - 3500 min-1 (rpm)
Overall length
143 mm (5-5/8˝) 155 mm (6-1/8˝) 143 mm (5-5/8˝) 155 mm (6-1/8˝)
Weight (with battery pack EY9L44)
1.5 kg (3.3Ibs)
1.55 kg (3.4Ibs)
— —
Weight (with battery pack EY9L50)
— —
1.6 kg (3.5Ibs)
1.65 kg (3.6Ibs)

BATTERY PACK

Model EY9L41 EY9L42 EY9L44 EY9L50
Storage battery Li-ion
Battery voltage 14.4 V DC
(3.6 V x 4 cells) 14.4 V DC
(3.6 V x 8 cells) 18 V DC
(3.6 V x 10 cells)