FA-1718RD Two-Pole Coreless Brushless DC Motor
FA-1718RD is a high-power miniature two-pole coreless brushless DC motor with Φ17 outer diameter and 18mm body length, rated 9W. Adopting 2-pole magnetic slotless design brings 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 regulation. Four winding options cover 7.4V lithium, 12V/16V/24V industrial low voltage to match multiple power supply standards. Custom micro planetary gearbox and miniature incremental encoders are available for compact handheld precision equipment.
• Dimension: Φ17mm × Length 18mm
• Rated Power: 9W
• Voltage Options: 7.4V(04A) / 12V(02A) / 16V(03A) / 24V(01A)
• Two-pole slotless 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 | 04A | 02A | 03A | 01A | |
|---|---|---|---|---|---|
| Nominal voltage | V | 7.4 | 12 | 16 | 24 |
| No load speed | rpm | 25000 | 30000 | 30000 | 30000 |
| No load current | mA | 260 | 180 | 150 | 130 |
| Nominal speed | rpm | 22500 | 27000 | 27000 | 27000 |
| Nominal torque | mNm | 3.8 | 4.05 | 4.2 | 4.05 |
| Nominal current | A | 1.58 | 1.22 | 0.96 | 0.65 |
| Stall torque | mNm | 38.0 | 40.5 | 42.0 | 40.5 |
| Stall current | A | 13.45 | 10.62 | 8.25 | 5.3 |
| Terminal resistance | Ω | 0.55 | 1.13 | 1.94 | 4.53 |
| Torque constant | mNm/A | 2.82 | 3.81 | 5.09 | 7.64 |
| Speed constant | rpm/V | 3387.3 | 2500 | 1875 | 1250 |
| Mechanical time constant | ms | 4.4 | 4.95 | 4.78 | 4.96 |
| Rotor inertia | gcm² | 0.67 | 0.67 | 0.67 | 0.67 |
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 | 20.8g |
| Number of phases | 3 |
Engineering Overview
FA-1718RD two-pole coreless BLDC eliminates iron cogging torque to realize ultra-silent, low-vibration high-speed rotation. Two-pole slotless design features tiny rotor inertia, delivering ultra-fast start-stop and rapid speed response. Lightweight 20.8g mini body fits narrow internal layout of portable handheld equipment. Sleeve oil bearings guarantee stable long-term low-load operation. Multi-voltage options cover lithium beauty devices and 12/16/24V miniature automation systems. Matched micro gearbox reduces rotational speed and amplifies torque for tiny precision drive modules.
Typical Applications:
• Mini nail polishers, facial massage & handheld beauty care instruments
• Portable miniature medical sampling and testing equipment
• Tiny optical focusing & micro camera gimbal adjustment modules
• Small rechargeable personal care electronic appliances