Makita TD021D Manual De Instrucciones página 7

Standard bolt
N m
(ft lbs)
20
(15)
15
(11)
10
(7)
5
(4)
0 1.0
Fastening time S)
High tensile bolt
N m
(ft lbs)
20
(15)
15
(11)
10
(7)
5
(4)
0 1.0
Fastening time S)
M8(5/16")
(M8)
(5/16")
M6(1/4")
(M6)
(1/4")
2.0 3.0
(
M6(1/4")
(M6)
(1/4")
2.0 3.0
(
NOTE:
• Use the proper bit for the head of the screw/bolt
that you wish to use.
• Hold the tool pointed straight at the screw.
• If you tighten the screw for a time longer than
shown in the figures, the screw or the point of
the driver bit may be overstressed, stripped,
damaged, etc. Before starting your job, always
perform a test operation to determine the proper
fastening time for your screw.
The fastening torque is affected by a wide variety of
factors including the following. After fastening, always
check the torque with a torque wrench.
1. When the battery cartridge is discharged almost
completely, voltage will drop and the fastening
torque will be reduced.
2. Driver bit or socket bit
Failure to use the correct size driver bit or socket
bit will cause a reduction in the fastening torque.
3. Bolt
• Even though the torque coefficient and the
class of bolt are the same, the proper fasten-
ing torque will differ according to the diame-
ter of bolt.
• Even though the diameters of bolts are the
same, the proper fastening torque will differ
according to the torque coefficient, the class
of bolt and the bolt length.
4. The manner of holding the tool or the material
of driving position to be fastened will affect the
torque.
Using the tool as a hand screwdriver
Switch off the tool.
Move the lock lever to the locked position
Turn the tool.
NOTE:
• Use the tool with a fastening torque less than
12.5 Nm (9ft•lbs).
• This use is convenient for checking the
screwdriving.
• Do not use the tool for work requiring exces-
sive force, such as tightening bolt M10 or bolts
greater than M10 or removing rusted screws.
7 ENGLISH