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

Wood screw

 

3.5 -

9.5 mm (1/8" - 3/8")

 

driving

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

165 Nm

(1380 kgf-cm, 1190 in-lbs.)

(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)

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Panasonic EY7271, EY7270 VI. Accessories, VII. Specifications, Maximum Recommended Capacities, Main Unit