FA-1215RD Two-Pole Coreless Brushless DC Motor
FA-1215RD is a compact two-pole miniature coreless brushless DC motor with tiny Φ12mm outer diameter and 15mm body length, rated 3W. Adopting two-pole magnetic structure brings ultra-fast acceleration and ultra-high max speed, paired with durable sleeve bearings and built-in 3-channel hall sensor for stable closed-loop speed control. Two winding versions support 7.4V lithium and 12V industrial low voltage, ultra-light 12g weight fits ultra-narrow housing space. Custom planetary gearbox and mini encoders are available for tiny portable equipment.
• Dimension: Φ12mm × Length 15mm
• Rated Power: 3W
• Voltage Options: 7.4V(01A) / 12V(02A)
• Two-pole design + sleeve bearings + integrated 3CH hall sensor
• Standard 8Pin pin header wiring; Optional micro gearbox & mini encoders
Mechanical Dimensions
Dimensions are in mm. Please refer to the datasheet for tolerances and mounting details.
Performance Parameters
| Motor specifications | 01A | 02A | |
|---|---|---|---|
| Nominal voltage | V | 7.4 | 12 |
| No load speed | rpm | 28900 | 29200 |
| No load current | mA | 120 | 80 |
| Nominal speed | rpm | 26010 | 26280 |
| Nominal torque | mNm | 1.0 | 1.03 |
| Nominal current | A | 0.52 | 0.34 |
| Stall torque | mNm | 10.0 | 10.3 |
| Stall current | A | 4.09 | 2.64 |
| Terminal resistance | Ω | 1.81 | 4.55 |
| Torque constant | mNm/A | 2.44 | 3.9 |
| Speed constant | rpm/V | 3905.4 | 2433.3 |
| Mechanical time constant | ms | 4.89 | 4.77 |
| Rotor inertia | gcm² | 0.17 | 0.17 |
Optical Gearbox
| N/A | |
|---|---|
Optional encoder
| N/A | |
|---|---|
Terminal data
| Terminal data | |||
|---|---|---|---|
| Teminal model : 8 Pin排针 | |||
| Pin 1 电机绕组 Motor winding 1 | Pin 2 霍尔传感器 Hall sensor 3 | Pin 3 霍尔传感器 Hall Vcc 3.3~5V | Pin 4 电机绕组 Motor winding 2 |
| Pin 5 霍尔传感器 Hall sensor 2 | Pin 6 霍尔传感器 Hall GND | Pin 7 电机绕组 Motor winding 3 | Pin 8 霍尔传感器 Hall sensor 1 |
Other Specifications
| Other specifications | |||
|---|---|---|---|
| Operating temperature range | -20…+80℃ | Bearing type | Sleeve bearings |
| Number of pole pairs | 2 | Weight of motor | 12g |
| Number of phases | 3 |
Engineering Overview
FA-1215RD two-pole coreless BLDC features ultra-low rotor inertia, ultra-fast start-stop response and ultra-high rotating speed. Two-pole structure realizes rapid dynamic response, no cogging torque, smooth silent operation. Lightweight 12g slim body adapts ultra-compact equipment internal layout; sleeve bearings ensure stable long-term low-load operation. 7.4V lithium & 12V low voltage versions match portable small electronic products. Matched micro gearbox reduces speed and amplifies torque for tiny precision drive units.
Typical Applications:
• Mini handheld beauty massage & nail polishing instruments
• Portable miniature medical sampling & testing equipment
• Tiny optical focusing & micro camera gimbal modules
• Small household beauty personal care appliances