Makita BTW151 Manual

Models No.

Description

PRODUCT

TECHNICAL INFORMATION

CONCEPTION AND MAIN APPLICATIONS

Specification

Standard equipment

Optional accessories

< Note > The standard equipment for the tool shown may differ from country to country.

P 1 / 8

BTW151

14.4V Cordless Impact Wrench

Because of the over-tightening, it was a problem to employ

impact wrench in the working field where the even controlled

fastening torque is required.

However, the above mentioned BTW151 has solved this problem

with the "BPM preselection system".

Of course, BTW151 is equipped with newly developed battery

system as Model BTW150.

Below listed standard type model is only available.

BTW151BSA Ni-MH

BH1420 / 14.4V / 2.0Ah

Model No. Battery Charger

DC14SA

Plastic

case

Yes

Dimensions : mm ( " )

Width ( W )

Height ( H )

Length ( L ) 193 (7-5/8)

*253 (10)

78 (3-1/16)

*253 (10) is the height with battery BH1420.

14.4

0 - 2,300

0 - 3,000

No load speed (min-1=rpm)

Max. fastening torque

Electric brake

Variable speed control switch

Reverse switch

Voltage (V)

Capacities

Impact per minute (min-1=bpm)

Driving shank : mm ( " )

Net weight: kg (lbs)

High Tensile bolt

Machine screw

Self drilling screw

Course thread

Standard bolt

Square 12.7 (1/2)

150N.m 1,530Kgf.cm 1,330in.lbs

Yes

1.9 (4.3) including battery BH1420

BTW151

Model No.

M10 - M16 (3/8 - 5/8)

M8 - M12 (5/16 - 1/2)

* Socket 19-38 ................................... 1 pc.

* Pin 4 ................................................ 1 pc.

* O ring 24 ......................................... 1 pc. (Except North American market)

* Plastic case ....................................... 1 pc. (only for Model BTW151BSA)

* Various socket

* Battery BH1420 (2.0Ah)

* Battery BH1433 (3.3Ah)

* Charger DC14SA

Features and benefits P 2 / 8

BPM. pre-selection system

The machine stops automatically, when the equipped

bpm. sensor perceives the pre-selected bpm.

And the over tightening can be avoided with

BPM. pre-selection system.

Consequently, Mod.BTW151 is suitable for fastening work

in the section where the fastening torque is directed in advance.

Bottom view of grip end

(View from terminal side)

193mm

Compact overall length : only 193 mm Only 1.9 Kg (4.3 lbs) including battery

BH1420

Newly developed 24V Ni-MH batteries

(BH1420 / 2.0 Ah and BH1433 / 3.3 Ah)

can be used for Mod.BTW151.

Long life DC motor with the

following features

* 2 ball bearings

* Replaceable armature

* Externally accessible brush

Sturdy Aluminum

hammer case

Palm fitly soft and slim grip with

ergonomically shape for comfortable

gripping

12.7mm (1/2") square drive

Push button for reversing

Variable speed control switch

How to pre-select BPM.

BPM. pre-select dial

The first digit

The second digit

(The alphabet means

working mode for

special employment.)

BPM. pre-select dial is located in the grip end

as illustrated above,

and it can be found easily, when the battery

is taken off.

BPM. can be set by turning the dial

with flat head screwdriver so that the dial's arrow

align with the numbers or alphabet indicated on the

machine's body.

The figures mean as illustrated in Fig.A - Fig.C.

See next page.

Bumper to protect the

surface of materials

from scratch

Model BTW151

Features and benefits P 3 / 8

If you want 196 bpm., align the pre-setting dial of the second

digit with 9 and the same of the first digit with 8 as illustrated

in Fig.A. Namely, 98 x 2 = 196 bpm.

The second digit The first digit

If you want more than 200 BPM., align the both

pre-setting dials with 9 as illustrated in Fig. C.

In this case, Mod.BTW151 is used as an normal

cordless impact driver with 0 - 3,000 bpm.

The second digit The first digit

If you want 104 bpm., align the pre-setting dial

of the second digit with 5 and the same of

the first digit with 2 as illustrated

in Fig.B. Namely, 52 x 2 = 104 bpm.

The second digit The first digit

Fig.A

Fig.C

Fig.B

Indications and functions

0 - 9 1 - 8

Dial pre-selection Clockwise rotation Anti-clockwise rotation Purpose

The machine stops automatically,

when its sensor perceives the

pre-selected bpm which is

equivalent to double of the figures

selected with dial.

The machine starts or stops with

operation of the trigger switch.

The machine starts or stops with

operation of the trigger switch.

Mode of reverse switch

The fastening work

of bolts for which

the bpm. control is

required.

The fastening work

of bolts for which

more than 200 bpm.

is required, or

bpm. control is not

required.

The machine does not start

in spite of operation of switch

trigger.

The machine starts or stops with

operation of the trigger switch.

Fastening of bolts

The second

digit

The first

digit

The second

digit

The first

digit

The second

digit

The first

digit

Features and benefits P 4 / 8

Indications and functions

BSelect any of

0 - 9

Select any of

0 - 9

Select any of

0 - 9

Special purpose

Dial pre-selection Clockwise rotation Anti-clockwise rotation

Mode of reverse switch

If the dial of second digit is set on "A", the machine does not

start in spite of pulling trigger switch.

Purpose

The machine stops after the

first blow is perceived,

depending on the pre-selected

figures of the first digit.

For instance,

0 : Stop at one

1 : Stop 0.1 sec. later

2 : Stop 0.2 sec. later

9 : Stop 0.9 sec. later

The machine starts or stops

with operation of the trigger

switch.

Preliminary fastening

of bolts

The machine starts or stops

with operation of the trigger

switch.

Loosening of bolts

Depending on the pre-selected

figures of the first digit,

the machine stops when its blow

is not perceived.

For instance,

0 : Stop at one

1 : Stop 0.1 sec. later

2 : Stop 0.2 sec. later

9 : Stop 0.9 sec. later

The second

digit

The first

digit

The second

digit

The first

digit

The second

digit

The first

digit

Select any of

0 - 9

The second

digit

The first

digit

The second

digit

The first

digit

The machine does not start in

spite of pulling switch trigger,

but buzzers 2 sec. after pulling

switch trigger, depending on

the pre-selected figure of the

first digit.

For instance,

0 : one alarm of buzzer

1 : two alarms of buzzer

2 : three alarms of buzzer

9 : ten alarms of buzzer

Checking the functions

mentioned below.

For instance

* BPM. pre-select dial

* Stop of motor

* Buzzer

If the dial of second digit is set on "D", the machine does not

start in spite of pulling trigger switch.

The machine stops depending

on the pre-selected figure of

the first digit, after the the blow

is perceived.

For instance,

0 : stop with one blow

1 : stop with two blows

2 : stop with three blows

9 : stop with ten blows

Select any of

0 - 9

Features and benefits P 5 / 8

The relation between bpm. and fastening torque

Fastening standard bolt Fastening high tensile bolt

0 0

100

25 50 75

150

120

140

N.m

(Kgf.cm) N.m (Kgf.cm)

(204) 20 (204)

(408)

40 (408)

(612)

60 (612)

(816)

80 (816)

(1,020)

100 (1,020)

(1,224)

120 (1,224)

(1,428)

140 (1,428)

160 (1,632)

180 (1,836)

200 (2,040)

220 (2,244)

240 (2,448)

260 (2,652)

(bpm.)

(Dial pre-

selection) 25 50 75 98 99 99 (Dial pre-

selection)

1 2 3 1 2 3 4 5 6

(Time: sec.) (Time: sec.)

Standard fastening

torque for M 16

Standard fastening

torque for M 14

Standard fastening

torque for M 12

Standard fastening

torque for M 10

M12

M14

M16

100 150 196 250 300 (bpm.)

Standard fastening

torque for M 12

Standard fastening

torque for M 10

Standard fastening

torque for M 8

M10

M12

Comparison of products

Specifications

Battery Voltage (V)

Current capacity (Ah)

Energy Capacity (Wh)

Cell

Type

Fastening torque:N.m (kgf.cm)

Net weight: kg (lbs) (including battery)

Model

BTW151

Makita

14.4

2.0 3.3

28.8 47.5

BH1420 BH1433

Ni-MH

0 - 2,300

0 - 3,000

150 (1,530)

1.9 (4.2) 2.2 (4.9)

No load speed (min-1=rpm)

Impacts per minute (min-1=ipm)

193 (7-5/8)

78 (3-1/16)

253 (10)

* 225(7-5/8)

* 60(3-1/16)

* 235(10)

225(8-3/16)

60(2-3/8)

235(9-1/4)

276 (10-7/8) 276 (10-7/8)

(including battery) (including battery)

BTW150 * 6931D

14.4 14.4

57.6

2.0 4.03.3

28.8 47.5

BH1420 * 1402BH1433

Ni-MH Ni-Cd

0 - 2,300

0 - 3,000

150 (1,530)

0 - 1,900

0 - 2,300

147 (1,500)

1.9 (4.2) 2.2 (4.9) 4.2 (9.3)

193 (7-5/8)

78 (3-1/16)

253 (10)

Dimensions

Length : mm ( " )

Height : mm ( " )

Width : mm ( " )

* 6931D : The power source is a shoulder slug type battery, to which Mod.6931D is connected with cable.

Repair P 6 / 8

< 1 > Disassembling housing R and L

Remove hammer case from housing R and L. So, housing R can be separated from housing L.

Anvil can be disassembled from hammer case.

< 2 > Disassembling hammer

(1) Press down hammer with 1R045: Large gear extractor

by turning the handle.

(2)Adjust the opening for steel ball inserting to the cam groove top of spindle.

(3)Take off 2 pcs. of steel balls 5.6 from spindle.

< Note > 25 steel balls 3.5 are installed in hammer.

Check the quantity when assembling.

< Note > When assembling anvil to hammer case, put 0.1g MAKITA grease N No.1 to the cylindric part of anvil.

Fig. 1

Spindle

Cam groove top

of spindle

Opening for steel

ball inserting

Steel ball 5.6 x 2

Steel ball 3.5 x 25

Hammer

1R045 Large gear extractor

(4) Apply grease to the position No. 1, 2, 3 and 4 as listed below, when assembling.

(1) to Spindle

(3) to Steel ball 5.6 x 2

(2) to Steel ball 3.5 x 25

Hammer

(4) to Spur gear 22

Fig. 3

MAKITA

grease N No.1

Molybdenum

di-sulphide lubricant

(1)

(2)

(3)

(4)

0.5g 0.2g

0.2g

0.5g

1.0g

0.6g

Ball bearing 6901LLB

< Note > Make sure that 25 pcs.of steel

balls 3.5 are assembled in hammer,

when assembling.

Repair P 7 / 8

< 4 > Removing ball bearing 6901LLB

Ball bearing 6901LLB is firmly assembled by pressing into internal gear case, and it is difficult to disassemble it

without any tool. For disassembling it, the following repairing tools are required.

(1) Bearing Puller

1R130~1R133 Initially, Slit is closed.

Hammer

Grip

Insert Bearing Puller (1)

into the inner wheel of Bearing (2).

Turn Shaft (3), it will go in,

then the Slit is opened,

and the Bearing Puller (1) catches Bearing (2).

(3) (2)

Hammer

Ball Bearing 6901LLB

Bearing Puller

Grip

Hit Grip strongly with Hammer,

the Bearing is pulled out by the shock.

Internal gear case

(3)

* Bearing pullers No. 1R130 - 133

* Bearing Extractor No.1R089

Bearing Extractor No.1R089

Circuit diagram

Color index of lead wires

Black

Red

Orange

Blue

Yellow

Lead wires of

end bell complete

Terminal

Switch

FET

White

Vinyl tube binding

5 yellow lead wires and

1 blue wire

Controller

Wiring diagram P 8 / 8

FET

Switch

Press FET lead wires and

the wires of end bell

complete into the bottom

of housing L.

Be careful, not to pinch

them with housing R.

Fix lead wires (red

and white) with lead

holder.

Controller

Place the tube protecting 6 lead wires

of controller, in the center of controller,

so that the tube and controller's lead

wires are not pinched by housing R.

Place the tube and controller's lead wires

on controller with bending them as illustrated below.

BPM. preselecting

dial plate

Tube and 6 lead wires

(6 yellow and 1 blue lead wires) bent

on controller

Controller

BPM. preselecting

dial plate

Pass lead wires connecting controller

and terminal, between the inner wall

of housing and boss for the controller

fastening screw.

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