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T ECHNICAL INFORMATION
Models No. 8414D/ 8434D/ 8444D
PRODUCT
P1/9
L
Description Cordless Percussion-Driver Drills 12V/ 14.4V/ 18V
CONCEPT AND MAIN APPLICATIONS
The above products have been developed as successor models
of the current 8443D series models and as the highest grade H
series models among Makita Cordless Percussion-Driver Drills.
Their brief advantages are;
*Powerful motor provides high operation efficiency.
*Mechanical 3-speed;
3rd speed: higher than the predecessors for finishing W
light duty jobs with extremely high efficiency
Dimensions: mm (")
1st speed: lower than the predecessors for extra-heavy
Model No. 8414D 8434D 8444D
duty applications
*Easy operation mode change Length (L) 259 (10-1/4)
*All the great advantages as Model 8443D series models Width (W) 94 (3-11/16) 94 (3-11/16) 95 (3-3/4)
Height (H) 243 (9-9/16) 247 (9-3/4) 252 (9-7/8)
These new products are available in the following variations:
8414D
Battery Battery cover
Model No. (quantity) Charger Flash light
type Quantity
8414DWAE 1222 (Ni-Cd 2.0Ah) 2 2
w/o light
8414DWAE3 1222 (Ni-Cd 2.0Ah) 3 3
8414DWALE 1222 (Ni-Cd 2.0Ah) 2 2 ML120
8414DWDE 1234 (Ni-MH 2.6Ah) 2 2
DC1414 w/o light
8414DWDE3 1234 (Ni-MH 2.6Ah) 3 3
8414DWDLE 1234 (Ni-MH 2.6Ah) 2 2 ML120
8414DWFE 1235 (Ni-MH 3.0Ah) 2 2
w/o light
8414DWFE3 1235 (Ni-MH 3.0Ah) 3 3
8434D
Battery Battery cover
Model No. type Quantity Charger Flash light
(quantity)
8434DWAE 1422 (Ni-Cd 2.0Ah) 2 2
w/o light
8434DWAE3 1422 (Ni-Cd 2.0Ah) 3 3
8434DWALE 1422 (Ni-Cd 2.0Ah) 2 2 ML140
8434DWDE 1434 (Ni-MH 2.6Ah) 2 2
DC1414 w/o light
8434DWDE3 1434 (Ni-MH 2.6Ah) 3 3
8434DWDLE 1434 (Ni-MH 2.6Ah) 2 2 ML140
8434DWFE 1435 (Ni-MH 3.0Ah) 2 2
w/o light
8434DWFE3 1435 (Ni-MH 3.0Ah) 3 3
8444D
Battery Battery cover
Model No. type (quantity) Charger Flash light
Quantity
8444DWAE 1822 (Ni-Cd 2.0Ah) 2 2
w/o light
8444DWAE3 1822 (Ni-Cd 2.0Ah) 3 3
8444DWALE 1822 (Ni-Cd 2.0Ah) 2 2 ML180
8444DWDE 1834 (Ni-MH 2.6Ah 2 2
DC1804 w/o light
8444DWDE3 1834 (Ni-MH 2.6Ah) 3 3
8444DWDLE 1834 (Ni-MH 2.6Ah) 2 2 ML180
8444DWFE 1835 (Ni-MH 3.0Ah) 2 2
w/o light
8444DWFE3 1835 (Ni-MH 3.0Ah) 3 3
P2/9
Specification
Model No. 8414D 8434D 8444D
Voltage: V 12V 14.4V 18V
Battery
2.0/ Ni-Cd 2.0/ Ni-Cd 2.0/ Ni-Cd
Capacity: Ah/ Cell 2.6/ Ni-MH 2.6/ Ni-MH 2.6/ Ni-MH
3.0/ Ni-MH 3.0/ Ni-MH 3.0/ Ni-MH
Max. out put: W 210 250 310
3rd (Heighest) 0 - 1,600 0 - 1,700
No load speed:
2nd (High) 0 - 550 0 - 600
min.-1=rpm
1st (Low) 0 - 300 0 - 300
3rd (Heighest) 0 - 24,000 0 - 25,500
Blows per minute:
2nd (High) 0 - 8,250 0 - 9,000
min.-1=bpm
1st (Low) 0 - 4,500 0 - 4,500
Fastening torque: Hard joint 65 (47.9) 70 (51.6) 80 (59.0)
N.m (ft.lbs) Soft joint 31 (22.8) 32 (23.6) 40 (25.7)
Capacity: mm (") 1.5 -13 (1/16 - 1/2)
Drill chuck
Type Keyless, Single sleeve
Steel 13 (1/2) 13 (1/2) 13 (1/2)
Drilling capacity: 45 (1-3/4) 50 (2) 65 (2-9/16 )
Wood
mm (")
Concrete 13 (1/2) 14 (9/16) 16 (5/8)
Electric brake Yes
Torque adjustment Yes
Variable speed control Yes
Reverse switch Yes
Net weight: kg (lbs)
2.4 (5.3) 2.5 (5.5) 2.7 (6.0)
[includes battery]
Standard equipment
(for all variations listed in page 1)
Philips bit 2-45 .................................. 2
Grip assembly .................................. 1
Depth gauge ..................................... 1
Battery cover ..................................... For quantity, see the variation list in page 1.
Note: The standard equipment for the tool shown above may differ from country to country.
Optional accessories
For all models For 8414D For 8434D For 8444D
*Assorted drill bits for Battery 1220 Battery 1420 Battery 1822
wood and steel Battery 1222 Battery 1422 Battery 1834
*Assorted driver bits Battery 1234 Battery 1434 Battery 1835
Battery 1235 Battery 1435 Battery 1835F
Battery 1235A Battery 1435F Charger DC1804
Battery 1235F Charger DC1414 Automotive Charger DC1822
Charger DC1414 Charger DC1439
Charger DC1439 Charger DC1804
Charger DC1804 Automotive Charger DC1422
Automotive Charger DC1422 Automotive Charger DC1822
Automotive Charger DC1822
P3/9
Features and benefits
Mechanical 3-Speed Raised Logo of MXT
Provides high operation efficiency
(Metal eXtreme Technology)
Easy Operation Mode Change and a wide range of applications. This easy-to-remember nickname is
(See the graph below for details.) pad-printed, emphasizing extra-high
With merely one slide action, operation transmission durability ensured by
mode can be changed for drilling/fastening/ all metal gear construction.
percussion-drilling.
Single Sleeve Keyless Chuck Powerful Motor for High
Allows fast and easy one-hand Operation Efficiency
bit installation.
Although using the same ND31
motor as 6347D series models,
higher power has been achieved
Robust Aluminum Gear Housing by employment of rare earth
magnet.
Rubberized Soft Grip
Provides comfortable operation
Side Grip of New design with better control.
For heavy duty applications
Compact Design with an Overall Length
of Only 259mm (10-1/4")
5mm (3/16") smaller than the competitor A's series models.
Note: Set plate type batteries are not available.
Mechanical 3 speed for more efficiency and a wider range of applications.
(min.-1)
8414D* *Model 8414D
8434D 3rd = 1,600 min-1
2,000 2nd = 550 min-1
8444D
1st = 300 min-1
8443D 3rd speed (highest speed):
Rotational speed
Series 1,700 Optimum for faster drilling in light duty applications
1,500
1,400
1,000
2nd speed (high speed):
600 Optimum for more efficient drilling in heavy duty applications
500
1st speed (low speed)
450 For heavy duty applications; for example, able to drill through holes in
300
38mm thick SPF with 3" Selfeed bit while impossible with the rival
model of the competitor A and Makita 6347D.
0
P4/9
Comparison of products
[1] Specification Comparison
1) Main Specifications
Model No. Makita A B
Specifications 8414D 8413D B1
Capacity: Ah 2.6/ 3.0 2.6/ 3.0 2.4
Battery
Cell Ni-MH Ni-MH Ni-Cd
3rd 0- 1,600
No load speed:
2nd/ High 0- 550 0- 1,300 0 - 1,700
min.-1=rpm
1st/ Low 0- 300 0- 400 0 - 500
3rd 0- 24,000
No load speed:
2nd/ High 0- 8,250 0- 19,500 0 - 21,000
min.-1=rpm
1st/ Low 0- 4,500 0- 6,000 0 - 6,000
Locking torque (USA): in.lbs 400 320 N/A
12V
Max fastening Hard joint 65 35 60
torque: N.m Soft joint 31 18 22
Capacity: mm (") 13 (1/2) 13 (1/2) 13 (1/2)
Keyless chuck
Sleeve type Single Single Single
Steel 13 (1/2) 13 (1/2) 13 (1/2)
Drilling capacity: Wood 45 (1-3/4) 30 (1-3/16) 30 (1-3/16)
mm (")
Concrete 13 (1/2) 13 (1/2) 10 (3/8)
Length 259 (10-1/4) 267 (10-1/2) 272 (10-3/4)
Dimensions: mm (") Width 94 (3-11/16) 94 (3-11/16) --
Height 243 (9-9/16) 240 (9-1/2) 260 (10-1/4)
Net weight: kg (lbs) Catalog 2.4 (5.3) 2.3 (5.1) 2.4 (5.3)
[includes battery] Measured 2.43 (5.4) 2.31 (5.1) 2.31 (5.1)
Model No. Makita A B
Specifications 8434D 8433D A1 A2 B2
Capacity: Ah 2.6/ 3.0 2.6/ 3.0 (1.7) 2.4
Battery
Cell Ni-MH Ni-MH Ni-Cd Ni-Cd
3rd 0 - 1,700 0 - 1,800
No load speed:
min.-1=rpm 2nd/ High 0 - 600 0 - 1,300 0 - 1,400 0 - 1,700
1st/ Low 0 - 300 0 - 400 0 - 450 0 - 500
3rd 0- 25,500 0- 30,600
No load speed:
2nd/ High 0- 9,000 0- 19,500 0- 23,800 0 - 21,000
min.-1=rpm
1st/ Low 0- 4,500 0- 6,000 0- 7,650 0 - 6,000
Locking torque (USA): in.lbs 450 358 400 N/A
14.4V
Max fastening Hard joint 70 40 (63) 65
torque: N.m Soft joint 32 21 (28) 24
Capacity: mm (") 13 (1/2) 13 (1/2) 13 (1/2) 13 (1/2)
Keyless chuck
Sleeve type Single Single Single Single
Steel 13 (1/2) 13 (1/2) 13 (1/2) 13 (1/2)
Drilling capacity: Wood 50 (2) 36 (1-7/16) 44 (1-3/4) 32 (1-1/4)
mm (")
Concrete 14 (9/16) 14 (9/16) 6 (1/4) 12 (15/32)
Length 259 (10-1/4) 267 (10-1/2) 264 (10-3/8) 272 (10-3/4)
Dimensions: mm (") Width 94 (3-11/16) 94 (3-11/16) 76 (3) N/A --
Height 247 (9-3/4) 244 (9-5/8) 241 (9-1/2) 260 (10-1/4)
Net weight: kg (lbs) Catalog 2.5 (5.5) 2.4 (5.3) 2.4 (5.3) 2.5 (5.5)
[includes battery] Measured 2.50 (5.5) 2.43 (5.3) 2.47 (5.4) N/A 2.7 (6.0)
P5/9
Comparison of products
[1] Specification Comparison (cont.)
1) Main Specifications
Model No. Makita A B
Specifications 8444D 8443D A3 A4 B3
Capacity: Ah 2.6/ 3.0 2.6/ 3.0 (2.4) 2.0
Battery
Cell Ni-MH Ni-MH Ni-Cd Ni-Cd
3rd 0 - 1,700 0 - 2,000
No load speed:
min.-1=rpm 2nd/ High 0 - 600 0 - 1,400 0 - 1,450 0 - 1,800
1st/ Low 0 - 300 0 - 450 0 - 450 0 - 500
3rd 0- 25,500 0- 34,000
No load speed:
2nd/ High 0- 9,000 0- 21,600 0- 24,650 0 - 21,000
min.-1=rpm
1st/ Low 0- 4,500 0- 6,750 0- 7,650 0 - 6,000
Locking torque (USA): in.lbs 560 404 450 N/A
18V
Max fastening Hard joint 80 50 (76) 70
torque: N.m Soft joint 40 25 (33) 28
Capacity: mm (") 13 (1/2) 13 (1/2) 13 (1/2) 13 (1/2)
Keyless chuck
Sleeve type Single Single Single Single
Steel 13 (1/2) 13 (1/2) 13 (1/2) 13 (1/2)
Drilling capacity: Wood 65 (2) 38 (1-1/2) 50 (2) 35 (1-3/8)
mm (")
Concrete 16 (5/8) 16 (5/8) 6 (1/4) 14 (9/16)
Length 259 (10-1/4) 267 (10-1/2) 264 (10-3/8) 272 (10-3/4)
Dimensions: mm (") Width 95 (3-3/4) 95 (3-3/4) 90 (3-1/2) N/A --
Height 252 (9-7/8) 249 (9-13/16) 241 (9-1/2) 260 (10-1/4)
Net weight: kg (lbs) Catalog 2.7 (6.0) 2.6 (5.7) 2.7 (5.9) 2.6 (5.7)
[includes battery] Measured 2.76 (6.1) 2.68 (5.8) 2.75 (6.1) N/A 2.95 (6.5)
2) Other Specifications
12V models 8414D 8413D B1
14.4V models 8434D 8433D A1 A2 B2
12V/ 14.4V/ 18V
18V models 8444D 8443D A3 A4 B3
Metal gear housing Yes Yes Yes Yes
Externally accessible brush Yes Yes No Yes
Side grip Yes Yes Yes Yes (option)
Soft grip Yes No Yes Yes
Holders for storing bit 2 2 1 1
Torque adjustment 16stages+ drill 16stages+ drill 22stages+ drill 15stages+ drill
P6/9
Comparison of product
[2] Performance Comparison
We carried out masonry drilling test on the new products and the competitions, and compared work speed and volume.
Test Conditions: Drilled holes in brick with dia. 8mm (5/16") TCT drill bit.
Note: 1. With 2.6Ah Ni-MH battery, Makita models were tested.
2. The test results depend to a great extent on the hardness of materials, etc.
3. The numbers in the bar graphs are relative values when the capacity of the predecessor model
(8414D/8433D/8443D) is indexed at 100.
4. The 3rd speed of the new models is designed for faster drilling/fastening with rotational speed higher
than that of the predecessor models. Therefore, in some applications, the energy consumption may
get higher, resulting in work volume smaller than the predecessor models.
12V 8414D [Work speed] [Work Volume]
(the time required to drill a hole) (on a single full battery charge)
Slow Fast Few Many
Makita 8414D 115 10.5 sec. 80 38 holes
(3rd speed)
Competitor B Mod. B1 115 80
(High speed)
Makita 8413D 100 100
(High speed)
0 50 100 150 0 50 100 150
14.4V 8434D
Slow Fast Few Many
Makita 8434D 150 100
(3rd speed) 65 holes
Competitor A Mod. A1
7.9 sec.
(3rd speed) 105 60
Competitor B Mod. B2
(High speed) 135 70
Makita 8433D 100 100
(High speed)
0 50 100 150 0 50 100 150
18V 8444D
Slow Fast Few Many
Makita 8444D 145 5.3 120
(3rd speed) sec. 114 holes
Competitor A Mod. A3
(3rd speed) 150 115
Competitor B Mod. B3
(High speed) 145 95
Makita 8443D 100 100
(High speed)
0 50 100 150 0 50 100 150
P7/9
Repair
[1] DISASSEMBLY/ ASSEMBLY
[1] -1. Drill Chuck
REMOVAL
When replacing Gear assembly, remove Drill chuck first as described below.
(When replacing only Housing, you need not remove Drill chuck.)
1) After opening the chuck jaws to the full, remove the chuck screw (M6x22 (-) Flat head screw) by turning it clockwise.
Use impact driver drill if it is difficult to remove the screw.
2) Slide Speed change lever to the position of "1" (1st speed), and slide Action mode change lever to the drill mode
as illustrated in Fig. 1.
Secure the short arm of a hex wrench with the chuck jaws. Hold the machine firmly, and then remove Drill chuck
by hitting the long arm of the hex wrench using plastic hammer to turn Drill chuck counterclockwise. (Fig. 2)
Fig. 1 Fig. 2
Action mode Hex wrench
change lever
Speed change lever
Note: Fig. 3
This product has "Spindle Lock system".
After hex wrench is secured in Drill chuck, it is impossible to turn the wrench [WRONG]
in order to adjust the position of its long arm. (Fig. 3)
Therefore, make sure that the hex wrench is positioned as illustrated in Fig. 2
before securing it in drill chuck.
Caution:
Place the tool on a work table so that Drill chuck touches the surface of the work table as illustrated to left in Fig. 4.
Failure to follow this instruction can result in deformation of Spindle.
Fig. 4
[CORRECT] [WRONG]
Spindle can be deformed by the shock to
Drill chuck hex wrench.
Work table Hex wrench
P8/9
Repair
[1] -1. Drill Chuck (cont.)
INSTALLATION
1) Make sure that Flat washer 13 is mounted to Spindle before installing Drill chuck. (Fig. 5)
2) Slide Speed change lever to the position of "1" (1st speed), and slide Action mode change lever to the drill mode as
illustrated in Fig. 1. Push in F/R change lever for the forward rotation mode. (Fig. 6)
Secure the short arm of a hex wrench in the chuck jaws, and the long arm in vise. Hold the grip of the machine firmly
so that your hand cannot be pulled away by reaction torque. And then tighten Spindle into Drill chuck by pulling the
trigger of Switch until Spindle is locked. (Fig. 6)
Note: Release the trigger of Switch just after Spindle is locked. Do not keep on pulling the trigger for longer than
one second.
3) Fasten Drill chuck to Spindle with the chuck screw (M6x22 (-) Flat head screw) by turning it counterclockwise.
If you reuse a screw removed from Drill chuck, apply an appropriate amount of adhesive (ThreeBond 1321B/ 1342 or
Loctite 242) to the screw for secure fastening.
Fig. 5 Fig. 6
Hex wrench
Flat washer 13
Push in R/F
change lever
for the forward
rotation mode.
[1] -2. Installing Speed Change Lever
1) Before installing Speed change lever on Gear assembly, make sure that;
a. Two Leaf springs are installed to Speed change lever as illustrated to left in Fig. 7.
b. Two compression springs are installed to speed change lever as illustrated to right in Fig. 7.
2) Assemble Speed change lever to the projection on Gear assembly. (Fig. 8)
Fig. 7 Fig. 8
Change lever
Leaf spring
Projection for
Change lever speed change lever
installation
Compression spring
Gear assembly
P9/9
Circuit diagram
Color index of lead wires' sheath
Black
Red
Endbell complete
Receptacle
Switch
Holder
Spring terminal
Wiring diagram
Route lead wires
between rib B
and the inside wall
of Housing.
Rib B
Rib A
Route the connect lead wires
(red and black) of endbell complete Boss A
between rib A and boss A.
Do not put the lead wire (red)
on the boss A.