Panasonic EY6506 User Manual

- 9 - 

 

M6, M8, M10, M12 x 25 mm (1") Standard bolt

M10 x 25

mm

High tensile bolt

(Bolt size : Millimeters)

Tightening time (Sec.)

Tightening

torque

M10 x 25 High tensile bolt

100

(87)

200

(174)

300

(260)

400

(347)

500

(434)

600

(521)

700

(608)

800

(695)

900

(782)

0

M12

M10

M8

M6

0.1 0.25 0.5 1.0 2.0 3.0 4.0

k f-cm

(in-lbs)

 2) Tightening time

  Longer tightening time results in 

increased tightening torque. Excessive 

tightening, how ever, adds no value and 

reduces the life of the tool.

 3) Different bolt diameters

  The size of the bolt diameter affects 

the tight ening torque.

  Generally, as the bolt diameter 

increases, tightening torque rises

 4) Tightening conditions

 Tightening torque will vary, even 

with the same bolt, according to 

grade, length, and torque coefficient 

(the fixed coefficient indi cated by the 

manufacturer upon produc tion).

 Tightening torque will vary , even 

with the same bolting material (e.g. 

steel), accord ing to the surface fin-

ish.

 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 pulled out.

 7) Effect of Connecting Adaptor

  The tightening torque will be lowered 

through the use of a universal joint or 

a connecting adaptor.

 

 

   

 

       

     

   
     

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