FA-1722RD Two-Pole Coreless Brushless DC Motor
FA-1722RD is a high-performance 10W two-pole miniature coreless brushless DC motor, sized Φ17mm outer diameter × 22mm extended body. Adopts two-pole slotless magnetic design with ultra-low rotor inertia for ultra-fast start-stop response. Equipped with durable sleeve oil bearings and built-in 3-channel hall sensor to realize stable closed-loop speed regulation. Four winding versions cover 7.4V lithium, 12V/16V/24V industrial low voltage to match various portable device power supplies. Custom micro planetary gearbox and miniature incremental encoders are available for compact precision drive equipment.
• Dimension: Φ17mm × Length 22mm
• Rated Power: 10W
• 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 | 23300 | 23300 | 26000 | 25400 |
| No load current | mA | 200 | 140 | 170 | 90 |
| Nominal speed | rpm | 20970 | 20970 | 23400 | 22860 |
| Nominal torque | mNm | 4.58 | 4.27 | 5.19 | 4.84 |
| Nominal current | A | 1.69 | 1.0 | 1.04 | 0.62 |
| Stall torque | mNm | 45.8 | 42.7 | 51.9 | 48.4 |
| Stall current | A | 15.1 | 8.7 | 8.84 | 5.37 |
| Terminal resistance | Ω | 0.49 | 1.38 | 1.81 | 4.47 |
| Torque constant | mNm/A | 3.03 | 4.9 | 5.87 | 9.0 |
| Speed constant | rpm/V | 3148.6 | 1941.7 | 1625 | 1058.3 |
| Mechanical time constant | ms | 3.66 | 3.92 | 3.6 | 3.77 |
| Rotor inertia | gcm² | 0.72 | 0.72 | 0.72 | 0.72 |
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 | 26.3g |
| Number of phases | 3 |
Engineering Overview
FA-1722RD two-pole coreless BLDC eliminates cogging torque, realizing ultra-silent, low-vibration high-speed rotation. Two-pole low-inertia rotor delivers rapid acceleration & deceleration response. Longer 22mm body provides higher continuous torque than shorter 17 series models, while only 26.3g weight keeps handheld equipment lightweight. Sleeve oil bearings guarantee stable long-term low-load operation. Multi-voltage versions adapt lithium beauty instruments, portable medical testers and miniature automation modules. Matched micro gearbox converts high-speed output to low-speed high-torque drive for tiny precision mechanisms.
Typical Applications:
• Mini nail polishers, facial massage & handheld beauty care instruments
• Portable miniature medical sampling and testing equipment
• Tiny optical focusing and micro camera gimbal modules
• Small rechargeable personal care electronic appliances