Maintenance, Tightening torque, Factors affecting tightening torque – Panasonic EY7541 User Manual

Page 12

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[Information on Disposal in other Countries outside the European

Union]

These symbols are only valid in the European Union. If you wish to discard these items,

please contact your local authorities or dealer and ask for the correct method of disposal.

Note for the battery symbol (bottom two symbol examples):

This symbol might be used in combination with a chemical symbol. In this case it complies

with the requirement set by the Directive for the chemical involved.

IV

.

MAINTENANCE

Use only a dry, soft cloth for wiping the unit. Do not use a damp cloth, thinner, benzine, or other

volatile solvents for cleaning.

V

.

TIGHTENING TORQUE

The power required for tightening a bolt will vary, according to bolt material and size, as well as

the material being bolted. Choose the length of tightening time accordingly.

Reference values are provided below.

(They may vary according to tightening conditions.)

Factors Affecting Tightening Torque

The tightening torque is affected by a wide variety of factors including the followings. After

tightening, always check the torque with a torque wrench.

1) Voltage

When the battery pack becomes nearly discharged, the voltage decreases and the tighten-

ing torque drops.

Bolt Tightening Conditions

M12

M14

M16

M10

0.0

0.5

1.0

1.5

2.0

2.5

3.0

196.0

(2000)

147.0

(1500)

98.0

(1000)

49.0

(500)

Tightening time (Sec.)

M10×35 mm M1, M14, M16×45 mm

Standard bolt

Tightening torque

N·m

(k

g

f-cm)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

M12

M10

M8

196.0

(2000)

147.0

(1500)

98.0

(1000)

49.0

(500)

Tightening time (Sec.)

M8, M10×35 mm M1×45 mm

High tensile bolt

Tightening torque

N·m

(k

g

f-cm)

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