Makita DTW285Z - Инструкция по эксплуатации - Страница 9

9 ENGLISH

Model DTW284

Proper fastening torque for standard bolt

0

M20

M16

M16

M20

M12

M12

1

2

280
240
200

160
120

80

40

1

2

N•m

1.

 Fastening time (second) 

2.

 Fastening torque

Proper fastening torque for high tensile bolt

1

2

3

280

240

200

160
120

80

40

1

2

N•m

0

M12H

M14H

M16H

M12H

M14H

M16H

1.

 Fastening time (second) 

2.

 Fastening torque

Model DTW285

Proper fastening torque for standard bolt

0

M20

M16

M16

M20

M12

M12

1

2

280
240
200

160

120

80

40

1

2

N•m

1.

 Fastening time (second) 

2.

 Fastening torque

Proper fastening torque for high tensile bolt

0

160
120

80

40

200

2

3

1

M12H

280

240

M14H

M16H

M12H

M14H

M16H

1

2

N•m

1.

 Fastening time (second) 

2.

 Fastening torque

NOTE:

 Hold the tool pointed straight at the bolt or nut.

NOTE:

 Excessive fastening torque may damage the 

bolt/nut or impact socket. Before starting your job, 

always perform a test operation to determine the 

proper fastening time for your bolt or nut.

NOTE:

 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 

cartridge.

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. 

Impact socket

• 

Failure to use the correct size impact socket 

will cause a reduction in the fastening torque.

• 

A worn impact 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 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 use of the universal joint or the extension 

bar somewhat reduces the fastening force of the 

impact wrench. Compensate by fastening for a 

longer period of time.

5.  The manner of holding the tool or the material 

of driving position to be fastened will affect the 

torque.

6. 

Operating the tool at low speed will cause a reduc-

tion in the fastening torque.