Brushless DC-Servomotors
0308H003B
2 Pole Technology, sensorless
Key data
- Nominal voltage:
- 3 V
- Rated torque up to:
- 0.013 mNm
- No-load speed up to:
- 61000 min⁻¹
- Stall torque up to:
- 0.026 mNm
- Diameter:
- 3 mm
- Length:
- 8.4 mm
Advantages
- Extremely compact design. Diameters ranging from 3 mm to 5 mm
- For applications where space is very limited
- 2-pole design with medium to high speeds
- Matching, highly compact gearheads available
- Matching speed controllers available
| Productcategory: | Brushless DC-Servomotors | |
|---|---|---|
| Productfamily: | FAULHABER B-Micro | |
| Nominal voltage: | UN | 3 V |
| Terminal resistance: | R | 34 Ω |
| Efficiency motor, max.: | ηmax | 20 % |
| No-load speed up to: | n0 | 61000 min⁻¹ |
| No-load current: | I0 | 0.027 A |
| Rated torque up to: | MN | 0.013 mNm |
| Stall torque up to: | MH | 0.026 mNm |
| Friction torque, static: | C0 | 0.00177 mNm |
| Friction torque, dynamic: | CV | 1.09 ·10⁻⁷ mNm/min⁻¹ |
| Speed constant: | kn | 29800 min⁻¹/V |
| Back-EMF constant: | kE | 0.033 mV/min⁻¹ |
| Torque constant: | kM | 0.32 mNm/A |
| Current constant: | kI | 3.12 A/mNm |
| Slope of n-M curve: | 3200000 min⁻¹/mNm | |
| Rotor inductance: | L | 60 µH |
| Mechanical time constant: | Tm | 7 ms |
| Rotor inertia: | J | 0.0002 gcm² |
| Angular acceleration: | αmax. | 1323 ·10³rad/s² |
| Thermal resistance Rth1: | Rth1 | 60 K/W |
| Thermal resistance Rth2: | Rth2 | 300 K/W |
| Thermal time constant (winding): | τw1 | 0.5 s |
| Thermal time constant (housing): | τw2 | 45 s |
| Housing material: | Nickel alloy | |
| Operating temperature, min.: | -30 °C | |
| Operating temperature, max.: | 60 °C | |
| Winding temperature, max.: | 60 °C | |
| Mass: | 0.35 g | |
| Speed up to: | nmax. | 96000 min⁻¹ |
Operating Area of motor
The diagram indicates the recommended speed in relation to the available torque at the output shaft for a given ambient temperature of 22°C.
The diagram shows the motor in a completely insulated as well as thermally coupled condition (Rth2 50% reduced).
The nominal voltage (UN) curve shows the operating point at nominal voltage in the insulated and thermally coupled condition. Any points of operation above the curve at nominal voltage will require a higher operating voltage. Any points below the nominal voltage curve will require less voltage.
Motor Characteristic curves
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Technical Information