Notice of Corporate Name Change - 

Adamant Namiki Precision Jewel Co., Ltd., changed its name to Orbray Co., Ltd., effective January 1, 2023.

A special website is available.

Brushed Motor

Coreless moving coil is light weight, superior in quick starting and stopping (high speed response).

ブラシレスモーター
Efficiency High efficiency and no iron loss
Responsiveness Very low inertia and able to start/stop quickly
Life Low inductance and long life
Control Linear characteristics
Cogging No magnetic cogging
Electromagnetic noise Low electromagnetic interference

Brushed coreless motor does not have an iron core, and consists of a cup-shaped core as rotor and a permanent magnet inside the rotor as stator. Brushed coreless motor features the following: Coreless motor features the following:

Features

  1. Cup-shaped rotor coil is very light weight and has a small moment of inertia, allowing the motor to start and stop quickly.
  2. Because there is no cogging due to stator-rotor positioning, it features smooth rotation, low noise and low vibration.
  3. Motor can be made in compact sizes because it is made only of rare earth magnet, coil and rotor.

For the reasons mentioned above, our brushed coreless motor is used in many applications that require high precision, high speed response, as well as compactness and high efficiency.

Issues & challenges in Brushed Motor

The primary factors affecting the lifespan of brushed motors are abrasion due to rotational contact of the brush and commutator, and electric corrosion during polarity switching. While precious metal contact material minimizes the electric corrosion, physical abrasion remains an issue. Changing the brush material to carbon-based can prevent the mechanical wearing, but at the same time, this can increase electric spark noise. In general, brushed motors are not suitable for power motors because they can't accept large flow of electric current.
Orbray presents brushed coreless motors that address these issues equally.

Brushed Motor Standard Model

Products Dia.
[mm]
Length
[mm]
Nomi
nal
Vol
tage
[V]
Nominal No-load Stall Mecha
nical
time
constant
[ms]
Max.
effici
ency
CAD
download
Torque
[mNm]
Speed
[rpm]
Current
[mA]
Output
Power
[W]
Speed
[rpm]
Current
[mA]
Torque
[mNm]
Current
[A]
Encoder
with no
CMS07-1707 7 17 3.7 0.14 17,100 104 0.5 20,200 19 0.94 0.57 6.8 67 2D
3D
2D
3D
CMS07-1726 7 17 7.4 0.14 18,600 54 0.5 22,100 10 0.84 0.28 7.5 65 2D
3D
2D
3D
CMS10-1306 10 13 3.7 0.14 17,900 103 0.5 21,100 18 0.92 0.59 11.3 68 2D
3D
2D
3D
CMS10-1321 10 13 7.4 0.14 20,900 61 0.6 24,500 10 0.96 0.35 11.8 68 2D
3D
2D
3D
CMS10-1346 10 13 12.0 0.14 24,500 45 0.7 28,700 8 1.0 0.26 12.3 69 2D
3D
2D
3D
CMS10-1805 10 18 3.7 0.27 10,400 116 0.6 12,200 19 1.89 0.69 7.0 69 2D
3D
2D
3D
CMS10-1818 10 18 7.4 0.27 12,500 70 0.7 14,600 12 1.91 0.42 7.3 69 2D
3D
2D
3D
CMS10-1834 10 18 12.0 0.29 15,500 56 1.0 18,000 9 2.16 0.36 7.5 71 2D
3D
2D
3D
CMS12-1506 12 15 7.4 0.44 21,900 186 2.2 25,100 27 3.40 1.26 15.4 73 2D
3D
2D
3D
CMS12-1514 12 12.0 0.43 23,700 123 2.4 27,200 18 3.36 0.83 15.9 73 2D
3D
2D
3D
CMS12-2004 12 20 7.4 0.44 20,400 150 3.2 22,200 13 5.48 1.74 8.9 83 2D
3D
2D
3D
CMS12-2010 12 20 12.0 0.45 20,400 99 3.5 23,000 8 5.77 1.17 8.8 82 2D
3D
2D
3D
CMS12-3005 12 30 7.4 0.79 11,800 162 2.9 13,000 16 8.55 1.61 5.5 81 2D
3D
2D
3D
CMS12-3010 12 30 12.0 0.83 13,700 121 3.7 15,000 12 9.40 1.25 5.6 82 2D
3D
2D
3D
CMS16-2304 16 23 7.4 0.89 13,000 209 3.3 14,500 24 8.78 1.85 9.3 79 2D
3D
2D
3D
CMS16-2309 16 23 12.0 0.94 14,000 145 3.9 15,500 16 9.67 1.34 9.3 80 2D
3D
2D
3D
CMS16-2337 16 23 24.0 0.89 14,900 73 3.8 16,600 8 8.66 0.64 9.5 79 2D
3D
2D
3D
CMS16-2805 16 28 7.4 1.03 8,100 146 2.6 8,900 15 11.05 1.42 5.9 81 2D
3D
2D
3D
CMS16-2812 16 28 12.0 1.08 8,400 97 2.9 9,200 10 12.14 0.99 6.0 81 2D
3D
2D
3D
CMS16-2852 16 28 24.0 1.02 8,700 48 2.7 9,600 5 10.85 0.47 6.1 80 2D
3D
2D
3D
CMS16-3302 16 33 7.4 1.63 9,500 250 6.9 10,100 17 26.13 3.76 4.4 87 2D
3D
2D
3D
CMS16-3306 16 33 12.0 1.58 9,300 147 6.4 9,900 10 24.66 2.15 4.4 87 2D
3D
2D
3D
CMS16-3317 16 33 24.0 1.69 10,900 92 8.5 11,600 6 28.09 1.43 4.4 88 2D
3D
2D
3D

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