Maktec MT240 Technical Information

Models No.

Description

PRODUCT

T

ECHNICAL INFORMATION

CONCEPTION AND MAIN APPLICATIONS

Specification

Standard equipment

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

P 1 / 9

MT240
Portable Cut-Off 355mm (14")

The above product has been added to MAKTEC series tool.
Its features are as follows.
* Less expensive but service life is as long as existing
MAKITA models.
* Easy-to-repair construction

Dimensions : mm ( " )

Width ( W )

Height ( H )

Length ( L )

500 (19-3/4)
620 (24-3/8)
280 (11)

W

L

H

355 (14)

25.4 (1)

15.9 (35.1) including abrasive cut off wheel

3,800

0°

45°

D

H

W

W : 194 (7-5/8) H : 102 (4)
W : 233 (9-1/8) H : 70 (2-3/4)

S : 137 (5-3/8) T : 10 (3/8) S : 100 (3-15/16) T : 10 (3/8)

L : 119 (4-11/16) L : 106 (4-3/16)

H : 115 (4-1/2) W : 103 (4-1/16)

L

L

S S

Cord length : m (ft )

No load speed : min-1= rpm.
Wheel size

: mm ( " )

Diameter
Arbor

Thickness

Capacity : mm ( " )

Miter Angle

Net weight : Kg ( lbs )

Form of
materials

T

3 (1/8)

2.0 (6.6) for Australia

2.5 (8.2) for other countries

115 (4-1/2) 115 (4-1/2)

Continuous Rating (W)

Voltage (V) Cycle (Hz)

Input Output

Max. Output(W)

110

220
230
240

Current (A)

50 / 60

50 / 60
50 / 60

50 / 60

15.0

120

15.0

9.6

9.2

8.8

1,650 2,500900

2,500900

2,000 1,400 3,000
2,000 1,400 3,000
2,000 1,400 3,000

60

* Socket wrench 17 ....................................... 1 pc.

* Switch button for spare ............................... 1 pc. (for the countries which require "Lock off switch"

* Abrasive cut off wheel ............................... 1 pc.

Comparison of products

Features and benefits

P 2 / 9

MT240

Distinctive orange color
for MAKTEC series model

Quick release vise

Shaft lock for easy replacing
abrasive cut off wheel

Pivot portion of blade case is
assembled with screw and hex
nut for easy disassembling

Body, assembled with machine screw
for easy repairing.

< Note >
Tapping screws are used for European
countries because of recycling regulation.

Adjustable guide plate
45

° right and left at 3 locations

Carry handle for easy
transportation

The combinations of safety guard with switch are as follows, which differ from country to country.

Model No.

Specifications

Power input : W
Rated amperage for N. America

Shaft lock

Dimensions

Quick release vise

Cord length : m (ft)
Net weight w/ wheel : kg (lbs)

Protection from electric shock

355 (14)

2,000
15 A 15 A
3,800

25.4 (1)

Wheel size
: mm ( " )

Diameter
Arbor

Thickness

3 (1/8)

No load speed : min-1= rpm.

Capacity
: mm ( " )

D

H

W

Length : mm
( " )

Height : mm
( " )

Width : mm
( " )

MT240

194 (7-5/8)
102 (4)
233 (9-1/8)
70 (2-3/4)

115

(4-1/2)

double insulation double insulation grounding grounding grounding

Yes
Yes

2.5 (8.2)

15.9 (35.1)

355 (14)

2,000

3,800

2,300

3,500

25.4 (1)
3 (1/8)

355 (14)

25.4 (1)
3 (1/8)

2414NB

194 (7-5/8)
102 (4)
233 (9-1/8)
70 (2-3/4)

115

(4-1/2)

120

(4-3/4)

120 (4-3/4) 120 (4-3/4)

120 (4-3/4) 130 (5-1/8)

105 (4-1/8)

105 (4-1/8)

Yes
Yes

Yes
Yes

2.5 (8.2)

16.2 (35.7)

2.0 (6.6) 2.0 (6.6)

19.3 (42.6)

3.7 (12.2)

17.0 (37.5) 17.0 (37.5)

500

(19-3/4)

620

(24-3/8)

280
(11)

500

(19-3/4)

600

(23-5/8)

280

(11)

500

(19-3/4)

640

(25-1/4)

260

(10-1/4)

450

(17-3/4)

650

(25-1/2)

250

(9-7/8)

470

(18-1/2)

660
(26)

280
(11)

MAKTEC MAKITA

Competitor A Competitor B Competitor C

Model A Model C

2,300

3,900

Yes
Yes

Yes
Yes

355 (14)

25.4 (1)
3 (1/8)

120

(4-3/4)

2,000

3,800

355 (14)

25.4 (1)
3 (1/8)

120

(4-3/4)

Model B

w/o safety guard

+

Lock-ON switch

For Other

countries

w/ single safety

guard

+

Lock-OFF switch

For North

America

w/ single safety

guard

+

Lock-ON switch

For Malaysia,

Singapore

w/ double safety

guard

+

Lock-OFF switch

For Australia,

Europe

Comparison of products

P 3 / 9

Numbers in chart below are relative values when setting BOSCH GCO14D's capacity as 100.

Comparison of cutting speed

MAKTEC
MT240

Keyang
NHC14D

BOSCH
GCO14-2

Form and size of material for test

Form and size of material for test

S S

T

S : 50mm (2")
T : 5mm (3/16")

W : 100mm (3-15/16")
H : 50mm (2")
T : 3.2mm (1/8")

W

H

T

0 50 100 150

100

110

130

MAKTEC
MT240

Keyang
NHC14D

BOSCH
GCO14-2

0 50 100 150

90

100

110

Repair

P 4 / 9

< 1 > Lubrication
Apply MAKITA grease N. No.1 to the following portions marked with black triangle to protect
parts and product from unusual abrasion. See Fig. 1.

Fig. 1

Fig. 2

Fig. 3

20. Helical gear 49

57. Gear room of gear housing : approx 25g (0.9 oz.)

77. Pipe 20-128 : approx. 0.1g (0.01 oz.)

57

20

77

Gear housing

< 2 > Replacing armature

Pan Hd.Screw
M4x25 (4 pcs.)

Pan Hd.Screw
M5x40 (3 pcs.)

Pan Hd.Screw
M5x40 (4 pcs.)

Handle L

Motor housing

Armature

( 1 ) Remove carbon brushes. Remove handle L by unscrewing 3 pcs. of pan head screws M4x25 and
4 pcs. of pan head screws M5x40. See Fig. 2.
( 2 ) Remove motor housing by unscrewing 4 pcs. of pan head screws M5x40. Then, armature can be removed.
See Fig. 3.

( 3 ) After mounting new armature to gear housing, secure motor housing with 4 pcs. of pan head screws M5x40 as
illustrated in Fig. 3.
( 4 ) Secure handle L with 4 pcs. of pan head screws M4x25 and 3 pcs. of pan head screws M5x40. And mount
carbon brush. See Fig. 2.

Carbon brush

Repair

P 5 / 9

< 3 > Disassembling gear section
( 1 ) Take off hex bolt M10x25, outer flange 90, abrasive cut off wheel, O ring 14, ring 17 and inner flange 90 from
spindle. See Fig. 4.

( 2 ) Unscrew 4 pcs. of pan head screws M5x20. Then, safety cover and gear section can be removed from
the machine. See Fig. 5.

Fig. 4

Fig. 5

Fig. 7

Hex bolt M10x25

Outer flange 90

Inner flange 90

Abrasive cut off
wheel

O ring 14

Ring 17

Pan head
screws M5x20
( 4 pcs.)

Safety cover

Gear section

( 3 ) Remove ball bearing 6000ZZ with No.1R269 "Bearing extractor" as illustrated in Fig. 6.
( 4 ) Press spindle with arbor press. Then, helical gear 49 can be removed. See Fig. 7.

Fig. 6

Ball bearing 6000ZZ

Ball bearing 6203ZZ

Spindle

Helical gear 49

Bearing box

Repair

P 6 / 9

< 4 > Assembling gear section
( 1 ) Put helical gear 49 on the bearing setting plate and mount spindle to the helical gear 49 by pressing
with arbor press. See Fig. 8.

< 5 > Removing vise section
( 1 ) Unscrew 2 pcs. of pan head screws M8x30. Then, screw guide can slide on base. See Fig. 10.
( 2 ) Slide the vise section in the direction of arrow. Align the shoulder pin with the assembling hole of base.
See Fig. 11.
( 3 ) Remove vise section from the assembling hole. See Fig. 12.

< 6 > Removing Motor unit from base
( 1 ) Secure the motor unit with chain as illustrated in Fig. 13.
( 2 ) Remove spark guard from base, and unscrew hex socket head bolt M6x12 and hex nut M6. See Fig. 14.

Aligning this flat portion
of spindle with the
flat portion of helical
gear 49, press the spindle
with arbor press.

Flat portion of helical
gear 49

Bearing
setting plate

Bearing
setting plate

Helical gear 49

Spindle

Ball bearing
6000ZZ

Fig. 8

Fig. 9

( 2 ) Put bearing box on the bearing setting plate and mount the helical gear 49 to the bearing box by pressing
with arbor press. And then, mount ball bearing 6000ZZ to spindle. See Fig. 9.

Bearing box

Fig. 10

Fig. 11 Fig. 12

Vise plate

Shoulder
pin

Vise screw

Assembling
hole

Assembling
hole

Screw guide

Pan head screw M8x30

Base

Secure the motor
unit with chain.

Fig. 13

Gear housing

Base

Hex socket
head bolt M6x12

Hex nut M6

Fig. 14

Spark guard

Pan head
screw M6x10

Repair

P 7 / 9

( 3 ) Lay the product. Remove chain with which you secured the motor unit in Fig. 13, from hanger of handle.
See Fig. 15.
( 4 ) Bring the motor unit to the area in which torsion spring does not influence the motor unit any more. See Fig. 15.
( 5 ) Unscrew Hex nut M10-17 and remove spring washer 10, flat washer 10, hex bolt M10-140 and another flat
washer 10. See Fig. 15.

Fig. 16

Fig. 15

Remove chain from
hanger of handle.

Bring the motor unit to the area in which torsion spring does not influence
the motor unit any more.

Hex nut M10-17
Spring washer 10

Flat washer 10

Flat washer 10

Hex bolt M10-140

( 6 ) Remove pipe 20-128 by striking with hammer slightly. Then the motor unit can be separated from base.
See Fig. 16.

No.1R246
Round bar for arbor

Pipe 20-128

Torsion spring 24

Circuit diagram

P 8 / 9

Color index of lead wires

Black
White

Blue
Brown

Switch

Noise
suppressor

1
2

(if any)

Switch

2

1

Field

Terminal block

Insulated
terminal

Field

Line filter

(if any)

brown or black

blue or white

The product to be supplied to the countries where terminal block is required.

The product to be supplied to the countries where terminal block is not required.

Brush holder A

Switch

Switch

Brush holder A

Brush holder B

Brush holder B

Wiring diagram

P 9 / 9

Wiring in motor housing

Wiring in handle R

Field

Field lead wire (white)
to be connected with
switch

Field lead wire (black)
to be connected with
terminal block or
insulated terminal

Motor housing

Lead
holders

Field lead wires
(black and white) have to be
hold with lead holders as
illustrated left.

Be careful, not to slack
the lead wires in this area.

Switch

Noise suppressor

Put noise suppressor
in the place as illustrated,
if any.

Line filter

Put line filter in the place
as illustrated, if any.

Rib A of handle R

Rib B of handle R

Field lead wire

(white)
Field lead wire
(Black)

Pass field lead wires (black and
white) between rib A and rib B.

A

B

Terminal block

Put terminal block position A
or position B, if any.