FA-1518RB Coreless Brushless DC Motor
The FA-1518RB is a compact 3.5W coreless brushless DC motor with 15mm outer diameter and 18mm body length. It adopts oil-impregnated sleeve bearings and built-in 3-channel hall sensors for closed-loop speed feedback. This model provides two 7.4V and two 12V winding variants with different speed-torque characteristics, equipped with standard 8Pin pin header terminal layout. Optional gearbox and encoder are available to realize micro precision drive control.
• Dimension: Φ15mm × Length 18mm
• Rated Power: 3.5W
• Voltage Options: 7.4V(02A/04C) / 12V(01A/05C)
• Sleeve bearings + 3-phase built-in hall sensor
• 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 | 02A | 04C | 01A | 05C | |
|---|---|---|---|---|---|
| Nominal voltage | V | 7.4 | 7.4 | 12 | 12 |
| No load speed | rpm | 37500 | 32000 | 31500 | 36500 |
| No load current | mA | 270 | 180 | 150 | 160 |
| Nominal speed | rpm | 32600 | 27800 | 27400 | 31700 |
| Nominal torque | mNm | 1.76 | 1.85 | 1.64 | 1.95 |
| Nominal current | A | 1.17 | 0.99 | 0.58 | 0.76 |
| Stall torque | mNm | 13.5 | 14.2 | 12.6 | 15 |
| Stall current | A | 7.18 | 6.43 | 3.47 | 4.78 |
| Terminal resistance | Ω | 1.03 | 1.15 | 3.46 | 2.51 |
| Torque constant | mNm/A | 1.84 | 2.16 | 3.56 | 3.07 |
| Speed constant | rpm/V | 5067 | 4324 | 2625 | 3041 |
| Mechanical time constant | ms | 6.56 | 5.33 | 5.91 | 5.76 |
| Rotor inertia | gcm² | 0.24 | 0.24 | 0.24 | 0.24 |
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 GND | Pin 3 霍尔传感器 Hall sensor 1 | Pin 4 霍尔传感器 Hall sensor 3 |
| 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 2 | Pin 8 电机绕组 Motor winding 3 |
Other Specifications
| Other specifications | |||
|---|---|---|---|
| Operating temperature range | -20…+80℃ | Bearing type | Sleeve bearings |
| Number of pole pairs | 1 | Weight of motor | 16g |
| Number of phases | 3 |
Engineering Overview
FA-1518RB medium-length coreless brushless DC motor removes mechanical brush friction to extend service life and reduce electromagnetic interference. Uniform low rotor inertia brings smooth cogging-free rotation and fast response across all four winding versions. Dual 7.4V and dual 12V options offer flexible speed-torque matching for battery-powered mini devices. Built-in hall sensors support real-time speed feedback, and matched gearbox can boost output torque for compact positioning equipment.
Typical Applications:
• Portable beauty and medical handheld devices
• Mini robot micro actuators
• Compact battery-powered precision testing instruments
• Small intelligent wearable modules