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T ECHNICAL INFORMATION
Models No. BTD123F
NEW TOOL
P1/9
Description L
Cordless Impact Driver
CONCEPT AND MAIN APPLICATIONS
Model BTD123F has been added to the MAKSTAR series models.
The brief features of the new 12V impact driver are;
*Compact design with an overall length of only 163mm (6-3/8")
*Extra-lightweight with the newly designed, compact and light
12V batteries, BH1220C or BH1233C H
*Screw hole protrusions have been eliminated from hammer case
for increased maneuverability, allowing operator not to worry
about making scratches on workpiece with the tool.
This new product is available in the following variations.
Plastic W
Model No. Battery Charger carrying case
BTD123FZ No No No Dimensions: mm ( " )
Ni-MH w/ BH1220C w/ BH1233C
BTD123FSAE DC14SC Yes
BH1220C (2.0Ah)/ 2pcs Length ( L ) 163 (6-3/8)
Ni-MH Width ( W ) 82 (3-1/4)
BTD123FSJE DC14SC Yes
BH1233C (3.3Ah)/ 2pcs Height ( H ) 226 (8-7/8) 234 (9-1/4)
Specification
Voltage: V 12V
Battery Capacity: Ah 2.0 (battery BH1220C) / 3.3 (battery BH1233C)
Cell Ni-MH
2.0Ah battery approx. 30 with DC14SC
Charging time: min.
3.3Ah battery approx. 50 with DC14SC
Machine screw M4 - M8 (5/32 - 5/16")
Standard bolt M5 - M12 (3/16 - 15/32")
Capacities
High tensile bolt M5 - M10 (3/16 - 3/8")
Coarse thread screw 22 - 120mm (7/8 - 3-3/4")
Impacts per min.: min.-1=bpm. 0 - 3,200
No load speed: min.-1=rpm. 0 - 2,600
Max. fastening torque: N.m (kgf.cm/in.lbs) 125 (1,270/1,110)
Electric Brake Yes
Variable speed (electric) Yes
Reversing switch Yes
w/ 2.0 Ah battery 1.4 (3.1)
Net weight: kg (lbs)
w/ 3.3 Ah battery 1.6 (3.5)
Standard equipment
*Plastic carrying case .................................... 1 pc.
*Phillips bit 2-65............................................ 1 pc.
< Note > The standard equipment for the tool shown may differ from country to country.
Optional accessories
*Assorted Phillips bit, Socket bits and Drill chucks
*Bit piece
*Stopper assembly
*Batteries BH1220C, BH1233C, BH1220, BH1233
*Charger DC14SA, DC14SC, DC24SA
P2/9
Features and benefits
Compact Design with an Overall
Hammer Case Without Length of Only 163mm (6-3/8") High Performance
Screw Hole Protrusions D28 Type DC Motor
163mm
Allows operator not to worry *Rare earth magnet provides strong
(6-3/8")
about scratches to made by the power.
tool, increasing maneuverability. *Dual ball bearing construction for
extra-high durability
Phosphorescent *Motor life is extended by efficient
(glow-in-the-dark) Bumper cooling, replaceable armature, and
externally accessible carbon brush.
Enables operator to easily find this
tool even in dark locations. Rubberized Soft Grip
Is ergonomically contoured to fit
LED Job Light your palm perfectly for much more
comfortable and controlled operation.
For illuminated operation
in dark locations Optional hand strap can be attached.
Easy-to-Operate Large Trigger Switch
Slits for optional carry hook
for Variable Speed Control
Comes with a Plastic Carrying Case with
Newly Designed,
Built-in Accessory Storage Compartments.
Compact and Lightweight 12V Batteries,
BH1220C and BH1233C
Ensures comfortable operation with reduced fatigue.
BH1220C: 120g(0.26lbs) lighter than BH1220 Built-in accessory
BH1233C: 110g(0.24lbs) lighter than BH1233 storage compartments
Comparison of products
Model No. Makita A
Specifications BTD123F 6980FD BTD120 A
Voltage: V 12V 12V 12V 12V
Battery Capacity: Ah 2.0/ 3.3 2.6 2.0/ 3.3 1.7
Cell Ni-MH Ni-MH Ni-MH Ni-Cd
Charging time 2.0Ah battery 30 with DC14SC 30 with DC14SA
60 with DC1414 45
(approx.): min. 3.3Ah battery 50 with DC14SC 50 with DC14SA
Max. fastening torque: N.m (in.lbs) 125 (1,110) 125 (1,110) 100 (887) 115 (1,000)
No load speed: min.-1=rpm. 0 - 2,600 0 - 2,600 0 - 2,300 0 - 2,400
Blows per min.: min.-1=bpm. 0 - 3,200 0 - 3,200 0 - 3,000 0 - 3,000
LED job light Yes Yes No No
Carry hook (option) Yes No No No
External accessible carbon brush Yes Yes Yes No
Soft grip Yes Yes Yes Yes
Dimensions
Length (L): mm (") 163 (6-3/8) 163 (6-3/8) 168 (6-5/8) 167 (6-9/16)
Width (W): mm (") 82 (3-1/4) 94 (3-11/16) 75 (2-15/16) 82 (3-1/4)
Height (H): 2.0Ah battery 226 (8-7/8) 251 (9-7/8)
235 (9-1/4) 235 (9-1/4)
mm (") 3.3Ah battery 234 (9-1/4) 276 (10-7/8)
Net weight: w/ 2.0 Ah battery 1.4 (3.1) 1.5 (3.3) 1.7 (3.7)
1.7 (3.7)
kg (lbs) w/ 3.3 Ah battery 1.6 (3.5) 1.7 (3.7)
Plastic carrying
case with built-in Plastic carrying case Plastic carrying case Plastic carrying case
Standard equipment
accessory storage
compartments
P3/9
Comparison of products
Comparison of Work Speed and Work Volume
Numbers in chart below are relative values when the capacities of Model A of the competitor A are indexed at 100.
Note: The test results depend on the kind of wood to a great extent.
[Work Speed] [Work Volume]
Test conditions;
Tightened 41mm coarse thread
screw into spruce. slow fast few many
Makita BTD123F (2.0Ah) 110 0.6 sec. 145 550 screws
Makita BTD120 (2.0Ah) 100 140
A Model A (1.7Ah) 100 100
0 20 40 60 80 100 120 0 50 100 150
Test conditions;
Tightened 90mm coarse thread
screw into melapi. slow fast few many
Makita BTD123F (2.0Ah) 105 4.7 sec. 140 65 screws
Makita BTD120 (2.0Ah) 100 130
A Model A (1.7Ah) 100 100
0 20 40 60 80 100 120 0 50 100 150
Test conditions;
Tightened 1/4" Lag bolt
into spruce. slow fast few many
Makita BTD123F (2.0Ah) 110 5.5 sec. 135 50 bolts
Makita BTD120 (2.0Ah) 100 135
A Model A (1.7Ah) 100 100
0 20 40 60 80 100 120 0 50 100 150
Test conditions;
Drilled in spruce
with 1" auger bit slow fast few many
Makita BTD123F (2.0Ah) 105 6.5 sec. 145 45 holes
Makita BTD120 (2.0Ah) 100 140
A Model A (1.7Ah) 100 100
0 20 40 60 80 100 120 0 50 100 150
P4/9
Repair
DISASSEMBLING
[1] Disassembling Sleeve Section (Fig. 1)
(1) Remove Ring spring from the groove on Anvil with retaining pliers or the like.
(2) Now Flat washer, Compression spring 13, Sleeve and Steel ball 3.5 (2pcs) can be removed from Anvil.
(3) Remove Anvil from Hammer case.
Fig. 1
Compression spring 13 Steel ball 3.5 (2pcs)
Ring spring groove
Apply Makita grease N.No.2 to the
Flat washer Sleeve Anvil
cylindrical portion of anvil before mounting.
[2] Removing Hammer Case Complete
(1) Pull LED circuit out of housing by removing PT3x10 Tapping screw. ( Fig. 2)
(2) Remove stopper by removing PT3x16 Tapping screw. (Fig. 2)
Fig. 2
Stopper
Tapping screw
PT3 x 16
Tapping screw LED circuit
PT3x10
(3) Remove bumper from hammer case. (Fig.3) Fig. 3
(4) Fit socket 30-78 (Part No.134847-1) over the hex
portion of hammer case.
And then remove hammer case from housing by
turning the socket clockwise as illustrated in Fig. 4.
Bumper
Fig. 4
Hammer case
Socket 30-78
(134847-1)
Hex portion
of hammer case
P5/9
Repair
[3] Disassembling Housing
(1) After removing Brush holder caps and Carbon brushes, remove Hammer section, Ring 41 and Internal gear 51
from Housing. (Fig. 5)
(2) Separate Internal gear case from Housing by removing four M4x12 Pan head screws. (Fig. 6)
(3) Remove eight PT3x16 Tapping screws. Now Housing (R) can be separated from Housing (L).
Fig. 5 Fig. 6
Internal gear 51 Hammer section Internal gear case Pan head screw M4x12
Ring 41
Carbon brush
Brush holder cap Housing
[4] Disassembling Hammer and Spindle Section Fig. 7
(1) Press down Hammer using Large gear extractor (1R045)
to align the opening for Steel ball insertion with the top Spindle Steel ball 5.6
of cam groove on Spindle. And then remove Steel ball
5.6 (2pcs) from Spindle. (Fig. 7)
(2) Hold Hammer section as illustrated in Fig. 8, and release
it from the gear extractor.
Caution: Do not hold gear extractor as illustrated in Fig. 7
when releasing Hammer section from the gear extractor. Top of
Failure to follow this instruction could cause Steel balls Cam groove
3.5 to get out of hammer. on Spindle
(3) Now Hammer section can be disassembled as illustrated Hammer
in Fig. 9
Opening for
(4) After removal of Flat washer 24, Steel balls 3.5 can be
Steel ball
removed from Hammer. (Fig. 10)
insertion
*See next page for lubrication of Spindle section.
Fig. 8 Fig. 9 Fig. 10
Spindle section
Flat washer 12
Pin 5
Hammer
Steel ball 3.5
Cup
(24 pcs.)
washer 14
Compression Flat washer 24
spring 25
Hammer Spindle Spur gear 22
P6/9
Repair
ASSEMBLING
[1] Tightening Tapping Screws
Tighten the following Tapping screws to each recommended torque (Fig. 11);
(1) PT3x16 (8 pcs) for fastening Housing halves together ...... 1.1 - 1.3 N.m (11 - 13 kgf.cm)
(2) PT3x16 for fastening Stopper to Housing .......................... 0.7 - 0.9 N.m (7.1 - 9.2 kgf.cm)
(3) PT3x10 for fastening LED circuit to to Housing ............... 0.7 - 0.9 N.m (7.1 - 9.2 kgf.cm)
(4) ST3x8 for fastening FET spacer to Yoke unit ..................... 1.1 - 1.5 N.m (11 - 15 kgf.cm)
Fig. 11
(3) Yoke unit
LED circuit
(1)
(2) FET spacer
Stopper
FET
Housing (R) (4) (Field effect
transistor)
Housing (L)
[2] Fastening Internal Gear Case to Housing (Fig. 12)
When fastening Internal gear case to Housing, be sure to Fig. 12
follow the instructions below.
Internal gear case Pan head screw M4x12
*Do not reinstall M4x12 Pan head screws removed from
Internal gear case because they are adhesive-coated screws.
Always use brand-new M4x12 pan head screws.
*Tighten four M4x12 pan head screws to the recommended
torque of 0.88 - 1.8 N.m (9.0 - 18 kgf.cm).
Note: Remember to use a criss-cross tightening pattern.
[3] Lubrication of Hammer Section
Before assembling, apply Makita grease N. No.2 to the Fig. 13
following parts (Fig. 13);
(1) Top of the Spindle where Anvil contacts ........ 0.5 g (2)
(2) Steel ball 5.6 (2 pcs) ....................................... 0.5 g
(3) Steel ball 3.5 (24 pcs) ..................................... 0.5 g
(4) Spur gear 22 (2 pcs) ........................................ 2.0 g (1)
(3)
(4)
P7/9
Repair
[4] Fastening Hammer Case to Internal Gear Case
Fit socket 30-78 (Part No.134847-1) over the hex Fig. 14
portion of Hammer case, and then tighten the socket
to the recommended torque of 25 - 30 N.m Hammer case
(260 - 310 kgf.cm). (Fig.14)
Caution:
Remember to install Anvil on Hammer case before
fastening Hammer case to Housing.
Anvil
Hex portion Socket 30-78
of hammer case (134847-1)
[5] Installing Stopper on Housing
Because Stopper is not reversible when installed on Housing, be sure to place it as illustrated in Fig. 15.
Fig. 15
Correct
Stopper
Stopper
Wrong
P8/9
Circuit diagram
Fig. 16
Color index of lead wires' sheath
Black
End bell complete Red
Orange
LED circuit
Switch
Connector
Terminal
(See next page for Wiring diagram.)
P9/9
Wiring diagram
Fig. 17
Before Installation of Internal Electrical Parts
Route the two lead wires (black and red) from LED circuit as illustrated below.
Make a loose portion of the lead wires here
by placing LED circuit as illustrated below.
Boss
LED circuit
Pin Hold the lead wires firmly with the lead wire holders.
Be sure to insert the lead wires till they reach the
bottom of each holder.
Caution: Be careful not to break the lead wires.
After Installation of Internal Electrical Parts
Route the following lead wires as illustrated below;
Connector Lead wires from End bell complete, Lead wires from Switch,
Lead wires from LED circuit
Motor
FET
End bell complete
Place the lead wire (black) from
End bell complete above this rib.
Lead wire (red) rib
from Switch Switch
Pin
Hold the lead wires from Switch
and LED circuit securely with
these lead wire holders. Assemble Insulated
terminals to Switch
so that they do not
touch the boss.
Connector
Terminal