Makita 6918FD Instruction Manual page 6

For Model 6934FD
Standard bolt
.
N m
140
.
(1428)
(kgf cm)
120
(1224)
100
(1020)
80
(816)
60
(612)
M10
40
(408)
20
(204)
0 1.0 2.0
Fastening time
For Model 6918FD
High tensile bolt
.
N m
.
(ft lbs)
120
(87)
100
(72)
M10
80
(3/8")
(58)
60
M8
(43)
(5/16")
40
(28)
20
(14)
3.0 4.0
0 1.0 2.0
Fastening time
004373
M16
M16
M14
M12
M14
M12
M10
3.0
(S)
002360
M12 (1/2")
M12
(1/2")
M10
(3/8")
M8
(5/16")
5.0
(S)
For Model 6934FD
High tensile bolt
.
N m
.
(kgf cm)
140
(1428)
120
(1224)
100
(1020)
M10
80
(816)
60
(612)
M8
40
(408)
20
(204)
3.0 4.0 5.0 (S)
0 1.0 2.0
Fastening time
Hold the tool firmly and place the socket over the bolt or
nut. Turn the tool on and fasten for the proper fastening
time.
NOTE:
• When fastening screw M8 (5/16") or smaller, care-
fully adjust pressure on the switch trigger so that
the screw is not damaged.
• Hold the tool pointed straight at the bolt or nut.
• Excessive fastening torque may damage the bolt/
nut or socket. Before starting your job, always per-
form a test operation to determine the proper fas-
tening time for your bolt or nut. Especially for the
bolt smaller than M8 (5/16"), perform the above test
operation to prevent the trouble on socket or bolt,
etc.
• If the tool is operated continuously until the battery
cartridge has discharged, allow the tool to rest for
15 minutes before proceeding with a fresh battery.
The fastening torque is affected by a wide variety of fac-
tors 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. Socket
• Failure to use the correct size socket will cause
a reduction in the fastening torque.
• A worn socket ( wear on the hex end or square
end ) 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 fastening
torque will differ according to the diameter of
bolt.
6
004374
M12
M12
M10
M8