Panasonic EY75A1X Owner's Manual page 17

EY75A1 18 V
M10 x 35 mm M12, M14, M16 x 45 mm
N m
(kgf-cm)
Tightening time (Sec.)
EY75A1 18 V
M8, M10 x 35 mm. M12 x 45 mm
N m
(kgf-cm)
Tightening time (Sec.)
EY75A2 18 V
M10 x 35 mm M12, M14, M16 x 45 mm
N m
(kgf-cm)
Tightening time (Sec.)
Standard bolt
High tensile bolt
Standard bolt
- 17 -
EY75A2 18 V
M8, M10 x 35 mm. M12 x 45 mm
N m
(kgf-cm)
Tightening time (Sec.)
Bolt
Nut
Tightening conditions
• The following bolts are used.
Standard bolts: Strength type 4.8
High tensile type 12.9
Explanation of the strength type
4.8
Bolt yield point
80
( % of tensile strength)
32 kgf/mm
Bolt tensile strength
40 kgf/mm
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).
High tensile bolt
Washer
Steel plate
thickness 10 mm (3/8")
Washer
Spring washer
2
(45000 psi)
2
(56000 psi)