FA-1218R Coreless Brushed DC Motor
The FA-1218R is a compact 0.75W coreless brushed DC motor with Φ12mm outer diameter and 18.6mm body length, built with iron-free coreless rotor and precious metal brushes for stable low-vibration precision running.
• Dimension: Φ12mm × Length18.6mm
• Rated Power: 0.75W
• Voltage Options:3.0V /5.0V /7.0V /12V
• Precious metal brush & oil-impregnated sleeve bearing
• Optional G12MF & G12XL gearbox plus matching encoder
Mechanical Dimensions
Dimensions are in mm. Please refer to the datasheet for tolerances and mounting details.
Performance Parameters
| Motor specifications | 06A | 01A | 21A | 78A | |
|---|---|---|---|---|---|
| Nominal voltage | V | 3.0 | 5.0 | 7.0 | 12 |
| No load speed | rpm | 10000 | 13000 | 17200 | 2000 |
| No load current | mA | 15 | 15 | 16 | 25 |
| Nominal speed | rpm | 7525 | 9782 | 12943 | 15050 |
| Nominal torque | mNm | 0.75 | 1.25 | 1.77 | 1.7 |
| Nominal current | A | 0.27 | 0.35 | 0.47 | 0.31 |
| Stall torque | mNm | 3.0 | 5.2 | 7.1 | 6.9 |
| Stall current | A | 1.05 | 2.07 | 1.84 | 1.2 |
| Terminal resistance | Ω | 2.85 | 3.63 | 3.81 | 10.03 |
| Torque constant | mNm/A | 2.8 | 3.59 | 2.45 | 5.61 |
| Speed constant | rpm/V | 3333 | 2600 | 2457 | 1666 |
| Mechanical time constant | ms | 9.6 | 7.5 | 8.2 | 8.6 |
| Rotor inertia | gcm² | 0.289 | 0.293 | 0.34 | 0.295 |
Optical Gearbox
| Optional gearbox | |
|---|---|
| G12MF | |
| G12XL |
Optional encoder
| N/A | |
|---|---|
Other Specifications
| Other specifications | |||
|---|---|---|---|
| Operating temperature range | -20…+80℃ | Bearing type | Sleeve bearings |
| Number of pole pairs | 1 | Brush type | Precious metal brushes |
| Number of phases | 5 | Weight of motor | 8.76g |
Engineering Overview
Adopting iron-free coreless rotor and 5-segment commutator paired with precious metal brushes, FA-1218R eliminates cogging torque to deliver smooth, low-noise and quick dynamic response. It supports two standard gearbox options (G12MF/G12XL) and optional encoders to boost output torque and realize closed-loop precision drive control.
Typical Applications:
• Portable handheld precision medical testing instruments
• Mini handheld beauty & cosmetic driving devices
• Micro liquid/air precision transfer pumps
• Compact miniature lab analytical equipment