Specifications

ManualsBrandsMakita ManualsDo-It-Yourself toolsBTP140RFE

Tightening bolts

The proper fastening torque may differ depending upon the kind or size of the

screw/bolt, the material of the workpiece to be fastened, etc. The relation

between fastening torque and fastening time is shown in the figures.

NOTE:

• Use the proper bit for the head of the screw/bolt that you wish to use.

• When fastening screw M8 or smaller, carefully adjust pressure on the

switch trigger so that the screw is not damaged.

• 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.

CAUTION:

• 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 factors including the fol-

lowing. 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 reduc-

tion 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.

• 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.

5. Operating the tool at low speed will cause a reduction in the fastening

torque.

Hammer drilling operation

CAUTION:

• There is a tremendous and sudden twisting force exerted on the tool/bit

at the time of hole break-through, when the hole becomes clogged with

chips and particles, or when striking reinforcing rods embedded in the

concrete.

To drill in the concrete or tiles, first, turn the action mode changing lever so that

the arrow on the lever points to the mark on the tool body. The adjusting

ring can be aligned in any torque levels for this operation.

Be sure to use a tungsten-carbide tipped bit.

Position the bit at the desired location for the hole, then pull the switch trigger.

Do not force the tool. Light pressure gives best results. Keep the tool in posi-

tion and prevent it from slipping away from the hole.

Do not apply more pressure when the hole becomes clogged with chips or

particles. Instead, run the tool at an idle, then remove the bit partially from the

hole. By repeating this several times, the hole will be cleaned out and normal

drilling may be resumed.

120

100

Standard bolt

N m

Fastening torque

Fastening time

Proper fastening torque

(kgf cm)

(1224)

(1020)

(816)

(612)

(408)

(204)

(

1.0 2.0

3.0

(M14)

(M12)

(M10)

(M8)

M14

M12

M10

007318

120

100

High tensile bolt

N m