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T ECHNICAL INFORMATION
Models No.
BTD042, BTD062,
BTW072
PRODUCT
P 1 / 10
Description Cordless Impact Drivers,
Cordless Impact Wrench
CONCEPTION AND MAIN APPLICATIONS L
L
BTD042, BTD062
These models are the advanced type of W1 CH W1
CH
the existing model BTD040 and BTD060.
They are equipped with Automatic Blow-Stop
System, with which you can prevent an over-tightening.
H H
And the indication lamp featuring these
models shows you the complete or incomplete
fastening of bolts or screws.
BTW072 W2 W2
This model is the 9.5mm(3/8") version of the
existing model BTW062. BTD042, BTD062 BTW072
Of course, it is equipped with Automatic
Dimensions : mm ( " )
Blow-Stop System and indication lamp showing
complete and incomplete fastening like as BTD042 TD042Z
TD062Z TW072Z
and BTD062.
Width 1 (W1) 55 (2-3/16)
Width 2 (W2) 66 (2-5/8)
Center
25 (1)
Height (CH)
Height (H) 236 (9-5/16)
Length (L) 164 (6-7/16) 166 (6-1/2)
Note: Width 1 = Width of motor section
Specification Width 2 = Width of battery
Model No. BTD042 BTD062 BTW072
Voltage (V) 9.6 9.6 9.6
No load speed (min-1=rpm) 0 - 2,500 0 - 2,500 0 - 2,500
Impact per minute (min-1=bpm) 0 - 3,500 0 - 3,000 0 - 3,000
Driving shank : mm ( " ) 6.35 (1/4) Hex 6.35 (1/4) Hex 9.5 (3/8) square
Machine screw M4 - M8 M4 - M8
Capacities (5/32" - 5/16") (5/32" - 5/16")
M5 - M10 M5 - M12 M5 - M12
Standard bolt
(3/16" - 3/8") (3/16" - 1/2") (3/16" - 1/2")
M5 - M8 M5 - M10 M5 - M10
High Tensile bolt
(3/16" - 5/16") (3/16" - 3/8") (3/16" - 3/8")
40N.m 65N.m 65N.m
Max. fastening torque (408Kgf.cm) (663Kgf.cm) (663Kgf.cm)
( 354in.lbs) (575in.lbs) (575in.lbs)
Electric brake Yes Yes Yes
Reverse switch Yes Yes Yes
* Net weight: kg (lbs) 1.06 (2.4) 1.09 (2.5) 1.09 (2.5)
* Net weight : including battery B9017A
Standard equipment Optional accessories
Battery B9017A .................. 1 pc. * Battery B9017A for Mod.BTD042, BTD062 and BTW072
* Protector for Mod.BTD042, BTD062 and BTW072
< Note > The standard equipment for the tool shown * Fast charger DC14SA
may differ from country to country. for Mod.BTD042, BTD062 and BTW072
* Refresh adaptor Model ADP02
for Mod.BTD042, BTD062 and BTW072
Features and benefits P 2 / 10
BTD042 , BTD062
Light and compact body
Model No. Overall length Net weight
Automatic Blow-Stop System for prevention
BTD042 1.06 Kg
of over tightening 164mm
BTD062 1.09 Kg
The machine is to be stopped automatically
in accordance with the pre-set blowing
time.
Newly developed D-28 type motor
The required fastening torque (N.m) can not be making a feature of
set with this system. * Externally accessible carbon brush
* Replaceable armature
Magnesium alloyed hammer case * High efficiency in cooling
* BTD042Z/ black, * Yoke unit (field) made of rare earth
* BTD062Z BTW072Z/ silver)
Indication lamp shows you the complete
or incomplete fastening of bolts or screws.
* Green lamp : complete fastening
* Red lamp : incomplete fastening
Push button type
reverse switch
Bit sleeve is covered with
Slim shaped grip makes it
rubber to protect work piece
easy to grip even with gloved
from accidental scratches
hand, and small bosses are
molded on it for nonslip
operation
Easily operatable
variable speed control Assembled with machine
switch screws for easy removing
and repairing.
Rubber protector (optional accessory) Battery power warning lamp on B90117A
can be installed for protecting work piece This lamp informs of the battery power remaining
from the accidental scratch. as per the diagram mentioned below.
And the machine is to be stopped automatically,
when the power remainder decreases to 20%.
Thus, the incomplete fastening is avoided.
The auto stop system functions.
(Rubber protector)
Voltage
The condition of
power display lamp
100 80 60 40 20 0
Mod. ADP02 Refresh Adaptor
Because of the auto stop system, approx. 20%
of battery power always remains in battery cells,
which can be cause of battery's inactivity.
In order to avoid such trouble, the battery has
to be refreshed with refresh adaptor ADP02
every week.
Features and benefits P 3 / 10
BTD072
Light and compact body
Automatic Blow-Stop System for prevention Model No. Overall length Net weight
of over tightening 1.09 Kg
BTD072 162mm
The machine is to be stopped automatically
in accordance with the pre-set blowing
time.
Newly developed D-28 type motor
The required fastening torque (N.m) can not be making a feature of
set with this system. * Externally accessible carbon brush
* Replaceable armature
* High efficiency in cooling
* Yoke unit (field) made of rare earth
Magnesium alloyed hammer case
Indication lamp shows you the complete
or incomplete fastening of bolts or screws.
* Green lamp : complete fastening
* Red lamp : incomplete fastening
Push button type
reverse switch
Slim shaped grip makes it
easy to grip even with gloved
hand, and small bosses are
molded on it for nonslip
operation
Easily operatable
variable speed control
switch
Assembled with machine
screws for easy removing
and repairing.
Battery power warning lamp on B90117A
Rubber protector (optional accessory) This lamp informs of the battery power remaining
can be installed for protecting work piece as per the diagram mentioned below.
from the accidental scratch. And the machine is to be stopped automatically,
when the power remainder decreases to 20%.
Thus, the incomplete fastening is avoided.
The auto stop system functions.
(Rubber protector)
Voltage
The condition of
power display lamp
100 80 60 40 20 0
Mod. ADP02 Refresh Adaptor
Because of the auto stop system, approx. 20%
of battery power always remains in battery cells,
which can be cause of battery's inactivity.
In order to avoid such trouble, the battery has
to be refreshed with refresh adaptor ADP02
every week.
P 4 / 10
Automatic Blow-Stop System and How to Pre-set the Number of Blows
(1) What Is the Automatic Blow-Stop System
These three models have a new function that protects screws or bolts from over-tightening.
This practical function is the automatic blow stop system:
You can pre-set the number of blows to the optimum one for your application before starting operation.
And, immediately after the number of blows has reached to the pre-set one, the blow action can be
automatically and instantly stopped, preventing you from over-tightening a screw or a bolt.
(2) How to Pre-set the Number of Hammer-blows
Follow the steps 1 to 8 listed below to pre-set the number of hammer-blows.
There is an LED on the back of the machine, and its two lights (green and red) can help you to confirm completion of
each step.
See
Step What to do State of the LED
Fig.
While pulling the switch trigger to the full, install the battery
on the machine. After the lights blink ten times, they
1 Note: Fig.1
come to be on continuously.
You must keep on pulling the switch trigger to the full until the
2nd step is completed.
2 Softly hit the foot of the machine only once with a driver. etc. The lights turn off. Fig.2
After the lights come to be on for Fig.3
3 Release the switch trigger.
0.5sec., they turn off.
While pulling the switch trigger to the full, set the second digit
of desired number of blows by hitting the machine
as many times as the number of the second digit. (Do not hit the On hitting the machine, the green light
4 Fig.2
machine if the second digit is zero.) turns on.
eg: If you set the number of blows to 12, hit the
machine once.
5 Release the switch trigger. The lights turn off. Fig.3
While pulling the switch trigger to the full, set the first digit
of desired number of blows by hitting the machine
as many times as the number of the first digit. (Do not hit the On hitting the machine, the red light
6 Fig.2
machine if the second digit is zero.) turns on.
eg: If you set the number of blows to 12, hit the
machine twice.
7 Release the switch trigger. The lights turn on. Fig.3
Remove the battery from the machine, and pre-setting is success-
8 The lights turn off.
fully completed.
Fig.1 Fig.2 Fig.3
P 5 / 10
(3) How to Check the Pre-set Number of Blows
Release the switch trigger, install the battery on the machine, and then check how many times the green or the red
light of the LED blinks.
As mentioned in page I-3, the green light blinking indicates the second digit of the pre-set number of blows,
and the red light blinking indicates the first digit.
Therefore, when the pre-set number of blows is 12, you can see the following states on the LED:
First, the green light blinks once.
Second, the red light blinks twice.
Third, the lights turn off.
(4) Relation Between Pre-set Number of Blows and its function
Forward or
Reverse
On Forward Rotation On Reverse Rotation
Pre-set number
of blows
Automatic Blow-Stop System does not Automatic Blow-Stop System does not
00
work. work.
When you keep on pulling the trigger until Automatic Blow-Stop System does not
the blow action finish the pre-set number of work.
blows, the green light turns on to notify you
01 to 99 that the bolt has been completely tightened.
When you release the trigger before
the blow action finish the pre-set number of
blows, the red light turns on to notify you
that the bolt has been poorly tightened.
(5) Relation Between Preset Number of Blows and Time Required to Finish the Blows
The equation for this relation is:
Time required = ( Preset number of hammer blows X *2 ) X **20ms
Note* : "X2" means two blows per spindle rotation.
Consequently, when the preset number of hammer-blows is 10, the hammer actually blows 20 times.
Note**: ms = micro second
The following graph shows this relation.
4
3.5
Time required (sec.)
3
2.5
2
1.5
1
0.5
0
0 10 20 30 40 50 60 70 80 90 100
Preset number of hammer-blows
Features and benefits P 6 / 10
The Relation Between Fastening Torque and Fastening Time
When Fastening Standard Bolt M6 When Fastening High Tensile Bolt M6
15 [133] 25 [221]
Torque (N.m [in.lbs])
Torque (N.m [in.lbs])
BTD062 / BTW072 20 BTD062 /B TW072 [177]
10 [89]
15 [133]
10 [89]
5 BTD042 [44] BTD042
5 [44]
0 0
0 0.2 0.4 0.6 0.8 1 0 0.5 1 1.5 2
Time (sec.) Time (sec.)
When Fastening Standard Bolt M8 When Fastening High Tensile Bolt M8
25 [221] 60 [531]
BTD062 / BTW072 50 BTD062 / BTW072
20 [177] [443]
Torque (N.m [in.lbs])
Torque (N.m [in.lbs])
BTD042 40 [354]
15 [133]
30 [266]
10 [89] BTD042
20 [177]
5 [44] 10 [89]
0 0
0 0.5 1 1.5 2 2.5 3 0 1 2 3 4 5
Time (sec.) Time (sec.)
When Fastening Standard Bolt M10 When Fastening High Tensile Bolt M10
60 [531] 80 [708]
BTD062 / BTW072 [443] BTD062 / BTW072
50
Torque (N.m [in.lbs])
Torque (N.m [in.lbs])
60 [531]
40 [354]
30 [266] 40 [354]
20 BTD042 [177] BTD042
20 [177]
10 [89]
0 0
0 1 2 3 4 5 0 1 2 3 4 5
Time (sec.) Time (sec.)
Comparison of products P 7 / 10
Model No. Impact driver Impact wrench
MAKITA
Specifications BTD042 BTD062 BTW072
Voltage ( V ) 9.6
Capacity ( Ah ) 1.7
Battery
Energy ( Wh ) 16.3
Kind of cell Ni-MH
Charging time with DC14SA 30 minutes
No load speed (min-1=rpm) 0 - 2,500
Impact per minute (min-1=bpm) 0 - 3,500 0 - 3,000
40N.m 65N.m
Max. fastening torque (408Kgf.cm) (663Kgf.cm)
( 354in.lbs) (575in.lbs)
Length 164 (6-7/16) 162 (6-3/8)
Dimensions Width 66 (2-5/8) 66 (2-5/8)
: mm (")
Height 236 (9-5/16) 236 (9-5/16)
Net weight including
1.06 (2.4) 1.09 (2.5)
battery B9017A: kg (lbs)
Repair
<1> Disassembling housing R and L
Remove hammer case from housing by taking off
4 pan head screws M4x20, and disassemble
housing R and L as illustrated in Fig. 1.
Pan head screws
M4x20
Hammer case
Housing
Fig. 1
<2> Disassembling bit holder section (anvil section)
Take off ring spring 10 from the groove on anvil. Steel ball 3
Then flat washer 11, compression spring 13 and sleeve
can be removed from anvil by pulling them in the
direction of the arrow in Fig.2.
Anvil can be separated from hammer case after
disassembling sleeve section. Sleeve
Anvil
Ring spring 10
Compression spring 13
Flat washer 11
Pull out in this direction Fig. 2
<3> Apply 0.5g of MAKITA grease N No.2 on the
cylindric part of anvil, when inserting it into Anvil
hammer case.
Apply MAKITA grease N No.2
Fig. 3
Repair P 8 / 10
< 4 > Removing 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.
(3A) Take 2 off steel balls 5.6 from spindle. (Mod.BTD062, BTW072) Spindle
(3B) Take 2 off steel balls 4.8 from spindle. (Mod.BTD042) Cam groove top
of spindle
< Note > 29 pcs. of steel balls 3 are installed in hammer.
Check the quantity when assembling.
Steel ball 4.8 x 2pcs. (BTD042)
Steel ball 5.6 x 2pcs. (BTD062, BTW072)
1R045 Large gear extractor
Hammer
Opening for steel
ball inserting
Steel ball 3 x 29 pcs.
L
(4) Spur gear 16
L= 85mm
L=105mm
L=130mm
W
W: The maximum opening width
is 170mm.
Fig. 4
(4) Apply MAKITA grease N No.2 to the position No. 1, 2,
3 and 4, when assembling.
(1) Spindle
(3A) Steel ball 5.6 x 2 (BTD062, BTW072)
(3B) Steel ball 4.8 x 2 (BTD042)
Hammer
(2) Steel ball 3 x 29 pcs.
(1) Spindle : 0.5g
(2) Steel ball 3 : 0.5g
(3A) Steel ball 5.6 (BTD062, BTW072) : 0.5g
(3B) Steel ball 4.8 (BTD042) : 0.5g
(4) Spur gear 16 : 2.0g
(4) Spur gear 16
Fig. 5
Repair P 9 / 10
< 5 > Removing ball bearing 6801LLB
Internal gear case
Ball bearing 6801LLB
Give a shock by knocking internal gear case Ball bearing 6801LLB can be removed
on the table. from internal gear case by the shock.
Fig. 6
< 6 > Fastening FET spacer with tapping screw ST 3x8
When assembling FET spacer, the fastening torque of tapping screw ST 3x8 is approx. 1.1 Nm - 1.5 Nm
(11Kgf.cm - 15 Kgf.cm).
FET spacer
Tapping screw ST 3x8
(The fastening torque
is approx. 1.1Nm -
1.5Nm.)
Fig. 7
< 7 > Hammer case has to be fastened diagonally as illustrated in in Fig.8.
Hammer case
Fig.8
Circuit diagram Color index of lead wires
P 10 / 10
Black
Red
White
Yellow
Terminal M1
Vinyl
tube Switch M2 M DC Motor
M2
FET
Shrink these tubes by heat.
LED
Controller
Wiring diagram
Fixing LED lead wires with lead
holder, pass them between pin and
endbell holding rib.
Pass lead wires between pin and
Endbell
endbell holding rib.
Ribs holding rib LED
Endbell complete Ribs
Pin
Pass FET lead wires (3 pcs) Lead holder
between endbell lead wires Pin
(red and black).
Switch Fixing lead wires (red, black,
white) with lead holder, pass
Pass endbell lead them on the left side of boss.
wire (red) between
ribs. Lead holder
Pass LED lead wires Controller
Boss along the groove under
Controller switch.