Precious metal commutation, Sleeve bearing Brushed Motor.
CMS12-20 Specifications
| Brushed Motor CMS12-2004 | Brushed Motor CMS12-2010 | ||||
|---|---|---|---|---|---|
| 1 | Nomal voltage | 7.4 | 12.0 | V | |
| 2 | No load speed | 22200 | 23000 | rpm | |
| 3 | No load current | 13 | 8 | mA | |
| 4 | Stall torque | 5.48 | 5.77 | mNm | |
| 5 | Stall current | 1744 | 1173 | mA | |
| 6 | Output power | 3.2 | 3.5 | W | |
| 7 | Max efficiency | 83 | 84 | % | |
| 8 | Terminal resistance | 4.24 | 10.23 | Ω | |
| 9 | Rated torque | 0.435 | 0.447 | mNm | |
| 10 | Rated speed | 20410 | 21211 | rpm | |
| 11 | Rated current | 150 | 99 | mA | |
| 12 | Friction torque | 0.04 | 0.04 | mNm | |
| 13 | Back-EMF constant | 0.331 | 0.518 | mV/rpm | |
| 14 | Torque constant | 3.16 | 4.95 | mNm/A | |
| 15 | Slope of N-T curve | 4049 | 3989 | rpm/mNm | |
| 16 | Mechanical time constant | 8.9 | 8.8 | ms | |
| 17 | Rotor inertia | 0.21 | 0.21 | gcm2 | |
| 18 | Max torque | 1.83 | 1.92 | mNm | |
*CMS12-20 is a Brushed Motor with a diameter of 12 mm and length of 20 mm.
Mechanical data
| 19 | Shaft raddial play | 0.05 | mm |
| 20 | Shaft axial play | 0.03~0.2 | mm |
| 21 | Max shaft radial load | 0.5（5mm*） | N |
| 22 | Max shaft axial load | 0.15 | N |
| 23 | Max shaft axial load at standstill | 7.8 | N |
*measured at () mm from flange
Environmental data
| 24 | Operating temperature | -20~60 | ℃ |
| 25 | Max coil temperature | 80 | ℃ |
| 26 | Weight | 11.8 | g |
| 27 | Number of segments | 5 | |
| 28 | Bearing type | Sintered sleeve |
