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T ECHNICAL INFORMATION
Models No. 9741
Description Makita wheel type sanding machine
CONCEPTION AND MAIN APPLICATIONS
The product is the multi-purpose sanding machine
which can efficiently conduct the wood grain
texture revealing, rust or paint removing, and
polishing processes by using various wheels.
The model 9740 is supplied with a nylon brush
wheel 120-100 and a wooden box. The model 9741
is supplied with a slitted paper wheel 120-40 and steel box.
Voltage(V) Current(A) Frequency(Hz) Continuous Rated Max.
rating input(W) output(W) output(W)
100 11 50-60 1050 600 830
115 7.8 50-60 860 480 830
200 4.5 50-60 860 480 830
220 4.1 50-60 860 480 830
230 3.9 50-60 860 480 830
240 3.8 50-60 860 480 830
No load speed(/min.) 3,500/min
Wheel dimension 100mm x 120mm
Useable wheel dimension 70 to 100 mm in diameter and 120 mm in thickness
Rollers are installed in front and the rear of the roller and the
front roller is adjustable in the vertical direction.
Cord length(m) 5m
Joint (to connect a dust collector)
Hex. wrench 6 --- 2 pieces (to mount and dismount wheels.)
Nylon brush wheel 120-100 (for grain texture revealing, rough finishing, and rust removing processes)
Nylon brush wheel 120-240 (For grain texture revealing process)
Wire brush wheel 120 (for removing rust)
Slitted paper wheel 120-40 (For removing rust and paint)
Cotton buff wheel 120 (for polishing)
The standard equipment for the tools shown may differ form country to country
Features and benefits
1. The product can be used for variety of sanding jobs by changing the wheels, such as grain texture revealing, rust
removing, paint removing, and polishing, etc.
2. You can conduct the stable sanding works as works can be sanded with the constant force by properly adjusting
the front roller.
3. As the machine is well balanced laterally, you can conduct jobs more easily, and eliminate the one-sided wear of
4. The sanding machine can be connected to a dust collector #401, #402, or #403 or a home use vacuum cleaner with
the supplied joint for pleasant working condition.
5. The nylon brush and slitted paper wheel can fit the convex or concave contour to allow sanding the curved
Uses and performance
1. Main uses of the wheels
Grain texture revealing Rust Paint Polishing Concrete mold
Rough finish Finish removing removing cleaning
Nylon brush wheel
Nylon brush wheel
Slitted paper wheel
Wire brush wheel
Cotton buff wheel
a) Grain texture revealing process
The process is to stand out the hard part (wood ring hard part representing growth in winters) of the wood grain
texture by grinding off only the soft part. The grain texture is revealed in about 3 minutes for a ceiling board
with 30 cm in width and 2m in length by sanding it with the nylon brush wheel 120-100 (abrasive grain size
And the hard grain texture part becomes glossy by finishing the board with the nylon brush wheel 120-240
(abrasive grit 240) (for about 3 minutes) after sanding with the nylon brush wheel 120-100.
b) Rust and paint removing
The slitted paper wheel 120-40 (abrasive grit AA40) can uniformly contact with the sanding surface, is
less loaded with sanding dust, and can keep the cutting effect in the new condition for long.
This is suitable for jobs usually considered unsuitable for the disk type sanding machine (with the efficiency
about three times better than the model 9500H). It can also remove only painted coating or rust efficiently
without damaging the base surface.(Standard belt type sanding machines tend to cut into the base surface.)
The table below shows times (reference value) required to remove rust or paint off a steel plate of 1.62 m2 in
Rust removing Paint removing
Slitted paper wheel 120-40 6 minutes 45 seconds
19 minutes 3 seconds
Nylon brush wheel 120-100 6 minutes 58 seconds
Wire brush wheel 100 7 minutes 53 seconds
The cotton buff wheel can polish and also remove wax adhered to the painted surfaces after waxing the surface
which is difficult with the wool buff wheel.
d) Concrete mold cleaning
The wire brush wheel can remove concrete adhered to the molds without much damaging the mold surfaces.
1. Replacement of the armature 4
Disassembling sequence Gear Housing 5
(1) Dismantle the wheel.
(2) Remove the grip and carbon brush.
(3) Remove the pan head setting screws from
1 to 5 shown in the fig. on the right, gear
housing and then housing to dismantle the armature.
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