DC-Micromotors
3890A018CR
Graphite Commutation
Key data
- Nominal voltage:
- 18 ... 48 V
- Rated torque up to:
- 222 mNm
- No-load speed up to:
- 5540 min⁻¹
- Stall torque up to:
- 2.91 Nm
- Diameter:
- 38 mm
- Length:
- 90 mm
Advantages
- Best dynamic performance due to a low rotor inertia
- Shockproof all-steel housing with corrosion-resistant coating
- Powerful rare-earth magnet
- Extremely wide operating temperature range -30 °C to 125 °C (optionally -55 °C, winding up to 155 °C)
- Durable graphite commutation
- No cogging
- Highest power density
| Product category: | DC-Micromotors | |
|---|---|---|
| Product family: | FAULHABER CR | |
| Nominal voltage: | UN | 18 V |
| Terminal resistance: | R | 0.21 Ω |
| Efficiency motor, max.: | ηmax | 86 % |
| No-load speed up to: | n0 | 5440 min⁻¹ |
| No-load current: | I0 | 0.327 A |
| Rated torque up to: | MN | 139 mNm |
| Stall torque up to: | MH | 2640 mNm |
| Speed constant: | kn | 300 min⁻¹/V |
| Back-EMF constant: | kE | 3.332 mV/min⁻¹ |
| Torque constant: | kM | 31.8 mNm/A |
| Current constant: | kI | 0.031 A/mNm |
| Slope of n-M curve: | 1.98 min⁻¹/mNm | |
| Rotor inductance: | L | 60.6 µH |
| Mechanical time constant: | Tm | 3.4 ms |
| Rotor inertia: | J | 164 gcm² |
| Angular acceleration: | αmax. | 161 ·10³rad/s² |
| Thermal resistance Rth1: | Rth1 | 2.1 K/W |
| Thermal resistance Rth2: | Rth2 | 6.6 K/W |
| Thermal resistance (external plastic flange): | Rth2 p | 6 K/W |
| Thermal resistance (external metal flange): | Rth2 m | 1.6 K/W |
| Thermal time constant (winding): | τw1 | 66 s |
| Thermal time constant (housing): | τw2 | 1427.6 s |
| Thermal time constant (external plastic flange): | τw2 p | 1300 s |
| Thermal time constant (external metal flange): | τw2 m | 350 s |
| Housing material: | steel, nickel plated | |
| Operating temperature, min.: | -30 °C | |
| Operating temperature, max.: | 125 °C | |
| Winding temperature, max.: | 155 °C | |
| Mass: | 550 g | |
| Speed up to: | nmax. | 6000 min⁻¹ |
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3D-CAD Files
Datasheet
Technical Information