ATOM DC Series
The specific design construction of a coreless DC motor provides several advantages over traditional, iron-core, technology. A first added value is given from the rotor’s lower mass and inertia, so very rapid acceleration and deceleration rates are possible. Furthermore, the lack of iron reduces “iron losses” to provide higher efficiencies (up to 90 percent) than traditional DC motors. Last, but not least, the coreless design reduces winding inductance, so sparking between the brushes and commutator is reduced, increasing motor life and reducing electromagnetic interference (EMI).
Servotecnica’s Coreless DC Motors are available in a wide range of sizes and have high flexibility on mechanical custom requirements.
Technical Specifications
- From 12 to 40mm in diameter
- Powers up to 200W
- High efficiency
- Can be coupled with Reducers and Encoders
- Low Noise
Attributes
Coreless
Customizable
High efficiency
Low inertia
Low noise
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| Values | Unit | 1230-06.. | 1230-12.. | 1230-15.. | 1230-24.. |
|---|---|---|---|---|---|
| Nominal voltage | V | 6 | 12 | 15 | 24 |
| No-load speed | rpm | 13500 | 11400 | 13500 | 15000 |
| No-load current | mA | 22.0 | 16.0 | 15.0 | 8.0 |
| Nominal speed | rpm | 10800 | 9120 | 10800 | 12000 |
| Nominal torque | mNm | 1.4 | 1.5 | 1.8 | 2.7 |
| Nominal current | A | 0.4 | 0.2 | 0.2 | 0.2 |
| Stall torque | mNm | 7.0 | 7.6 | 9.2 | 13.4 |
| Stall current | A | 1.69 | 0.78 | 0.89 | 0.90 |
| Max. efficiency | % | 78.5 | 77.7 | 79.9 | 80.0 |
| Terminal resistance | Ω | 3.55 | 15.38 | 16.85 | 26.67 |
| Terminal inductance | mH | 0.25 | 0.59 | 0.65 | 0.98 |
| Torque constant | mNm/A | 4.19 | 9.91 | 10.49 | 15.11 |
| Speed constant | rpm/V | 2250.0 | 950.0 | 900.0 | 625.0 |
| Speed/torque gradient | rpm/mNm | 1932.1 | 1495.9 | 1462.3 | 1115.5 |
| Mechanical time constant | ms | 5.7 | 4.3 | 4.5 | 3.2 |
| Rotor inertia | gcm2 | 0.28 | 0.27 | 0.29 | 0.27 |
| Thermal resistance housing-ambient | K/W | 33 | 33 | 33 | 33 |
| Thermal time constant winding | s | 7.0 | 7.0 | 7.0 | 7.0 |
| Thermal resistance winding-housing | s | 4.88 | 4.88 | 4.88 | 4.88 |
| Thermal time constant motor | °C | 229 | 229 | 229 | 229 |
| Ambient temperature | °C | -20…+85 | -20…+85 | -20…+85 | -20…+85 |
| Max. permissible winding temperature | rpm | +100 | +100 | +100 | +100 |
| Max. permissible speed | N | 15000 | 15000 | 15000 | 15000 |
| Max. axial load (dynamic) | N | 0,1 | 0,1 | 0,1 | 0,1 |
| Max.force for press fits (static) | N | 20 | 20 | 20 | 20 |
| Max. radial loading, 5mm from flange | 5 | 5 | 5 | 5 | |
| Number of poles | 2 | 2 | 2 | 2 | |
| Weight | g | 17 | 17 | 17 | 17 |