FA-1518RD Two-Pole Coreless Brushless DC Motor
FA-1518RD is a compact 5W two-pole miniature coreless brushless DC motor with Φ15 outer diameter and 18mm body length. Adopts two-pole magnetic design for ultra-low rotor inertia and ultra-fast dynamic response. Equipped with durable sleeve oil bearings and built-in 3-channel hall sensor for stable closed-loop speed control. Three winding variants cover 7.4V lithium battery and 12V low industrial voltage, providing high-speed and medium-torque options. Custom micro planetary gearbox and miniature encoders are available for ultra-small portable equipment.
• Dimension: Φ15mm × Length 18mm
• Rated Power: 5W
• Voltage Options: 7.4V(01A) / 12V(02A/03A)
• Two-pole magnetic structure + sleeve oil bearings + 3CH hall sensor
• Standard 8Pin pin header; Optional micro gearbox & miniature encoders
Mechanical Dimensions
Dimensions are in mm. Please refer to the datasheet for tolerances and mounting details.
Performance Parameters
| Motor specifications | 01A | 02A | 03A | |
|---|---|---|---|---|
| Nominal voltage | V | 7.4 | 12 | 12 |
| No load speed | rpm | 31000 | 32800 | 22400 |
| No load current | mA | 170 | 130 | 100 |
| Nominal speed | rpm | 27900 | 29520 | 20160 |
| Nominal torque | mNm | 1.98 | 2.48 | 1.54 |
| Nominal current | A | 1.02 | 0.83 | 0.39 |
| Stall torque | mNm | 19.8 | 24.8 | 15.4 |
| Stall current | A | 8.71 | 7.1 | 3.01 |
| Terminal resistance | Ω | 0.85 | 1.69 | 3.99 |
| Torque constant | mNm/A | 2.27 | 3.49 | 5.11 |
| Speed constant | rpm/V | 4189.2 | 2733.3 | 1866.6 |
| Mechanical time constant | ms | 4.42 | 3.74 | 4.12 |
| Rotor inertia | gcm² | 0.28 | 0.28 | 0.28 |
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 3 | Pin 2 霍尔传感器 Hall GND | Pin 3 霍尔传感器 Hall sensor 2 | Pin 4 霍尔传感器 Hall sensor 1 |
| Pin 5 电机绕组 Motor winding 2 | Pin 6 霍尔传感器 Hall Vcc 3.3~5V | Pin 7 霍尔传感器 Hall sensor 3 | 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 | 2 | Weight of motor | 16g |
| Number of phases | 3 |
Engineering Overview
The FA-BR-1215 motor features a coreless ironless rotor structure that minimizes inertia and enables fast acceleration and smooth speed control. Its compact form factor makes it suitable for space-constrained medical and professional handheld devices where consistent output and low vibration are critical.