FA-1215RB Coreless Brushless DC Motor
The FA-1215RB is an ultra-miniature 2W coreless brushless DC motor with 12mm outer diameter and 15mm short body. It adopts 3-phase structure integrated with hall sensor and oil-impregnated sleeve bearings. Brushless structure erases brush wear for ultra-long continuous service life. Four winding options cover 7.4V and 12V high-speed grades, with standard 8-pin terminal layout. Optional gearbox and encoder support closed-loop precision control for tiny integrated equipment.
• Dimension: Φ12mm × Length 15mm
• Rated Power: 2W
• Voltage Options: 7.4V(01A/03A/10A) / 12V(02A)
• 3-phase design with built-in 3-channel hall sensor + oil-impregnated sleeve bearing
• Standard 8Pin pin header terminal; Optional gearbox & encoder
Mechanical Dimensions
Dimensions are in mm. Please refer to the datasheet for tolerances and mounting details.
Performance Parameters
| Motor specifications | 01A | 03A | 10A | 02A | |
|---|---|---|---|---|---|
| Nominal voltage | V | 7.4 | 7.4 | 7.4 | 12 |
| No load speed | rpm | 36000 | 30000 | 43000 | 31500 |
| No load current | mA | 140 | 90 | 200 | 100 |
| Nominal speed | rpm | 31000 | 26000 | 37400 | 27000 |
| Nominal torque | mNm | 0.99 | 0.7 | 1.11 | 0.81 |
| Nominal current | A | 0.63 | 0.37 | 0.85 | 0.31 |
| Stall torque | mNm | 7.6 | 5.4 | 8.6 | 6.2 |
| Stall current | A | 3.87 | 2.28 | 5.21 | 1.71 |
| Terminal resistance | Ω | 1.91 | 3.25 | 1.42 | 7.02 |
| Torque constant | mNm/A | 1.92 | 2.3 | 2.03 | 3.56 |
| Speed constant | rpm/V | 4864 | 4054 | 5810 | 2625 |
| Mechanical time constant | ms | 4.04 | 4.78 | 4.29 | 4.33 |
| Rotor inertia | gcm² | 0.09 | 0.09 | 0.09 | 0.09 |
Optical Gearbox
| N/A | |
|---|---|
Optional encoder
| N/A | |
|---|---|
Terminal data
| Terminal data | |||
|---|---|---|---|
| Teminal model : 8 Pin排针 | |||
| Pin 1 霍尔传感器 Hall sensor 1 | Pin 2 电机绕组 Motor winding 2 | Pin 3 霍尔传感器 Hall GND | Pin 4 霍尔传感器 Hall sensor 3 |
| Pin 5 电机绕组 Motor winding 3 | Pin 6 霍尔传感器 Hall Vcc 3.3~5V | Pin 7 霍尔传感器 Hall sensor 2 | Pin 8电机绕组 Motor winding 1 |
Other Specifications
| Other specifications | |||
|---|---|---|---|
| Operating temperature range | -20…+80℃ | Bearing type | Sleeve bearings |
| Number of pole pairs | 1 | Weight of motor | 7.8g |
| Number of phases | 3 |
Engineering Overview
FA-1215RB is our smallest coreless brushless DC motor, featuring ultra-mini lightweight structure. Brushless design eliminates brush friction to extend service life and cut electromagnetic interference. Built-in 3 hall sensors deliver real-time speed feedback for precise closed-loop control. Coreless rotor brings low inertia, ultra-high rotating speed up to 43000rpm and smooth cogging-free operation. Multiple high-speed winding versions suit battery-powered tiny devices, and matched gearbox amplifies torque for micro positioning tasks.
Typical Applications:
• Mini wearable intelligent equipment
• Tiny portable beauty & medical devices
• Micro robot miniature actuators
• Compact handheld precision instruments