FA-1722RB (3+5P) Coreless Brushless DC Motor
The FA-1722RB (3+5P) is a medium-power 5W coreless brushless DC motor with 17mm outer diameter and extended 22mm body. It adopts oil-impregnated sleeve bearings and exclusive split mixed 3+5Pin terminal design: independent 3Pin 2.0mm pin header for three-phase windings, separated 5Pin MOLEX 1.25mm connector for hall sensor signals. This separation effectively isolates power circuits and signal lines to reduce electromagnetic crosstalk. Four winding versions cover 5V, 7.4V, 12V and 24V wide voltage range to match various power supply standards. Custom planetary gearbox and encoder are available for high-torque closed-loop miniature drive systems.
• Dimension: Φ17mm × Length 22mm
• Rated Power: 5W
• Voltage Options: 5V(09A) / 7.4V(06A) / 12V(27A) / 24V(23A)
• Oil-impregnated sleeve bearings + built-in 3-channel hall sensor
• Split mixed 3+5Pin dual connector; Optional gearbox & encoder
Mechanical Dimensions
Dimensions are in mm. Please refer to the datasheet for tolerances and mounting details.
Performance Parameters
| Motor specifications | 27A | 23A | 09A | 06A | |
|---|---|---|---|---|---|
| Nominal voltage | V | 5 | 7.4 | 12 | 24 |
| No load speed | rpm | 25200 | 30000 | 24200 | 22000 |
| No load current | mA | 130 | 230 | 100 | 80 |
| Nominal speed | rpm | 21900 | 26220 | 21100 | 19250 |
| Nominal torque | mNm | 3.5 | 4.19 | 3.86 | 3.85 |
| Nominal current | A | 1.97 | 1.98 | 0.9 | 0.44 |
| Stall torque | mNm | 26.4 | 33.5 | 30.9 | 30.8 |
| Stall current | A | 14.3 | 15.23 | 6.5 | 2.96 |
| Terminal resistance | Ω | 0.35 | 0.52 | 1.84 | 8.11 |
| Torque constant | mNm/A | 1.86 | 2.31 | 4.64 | 10.2 |
| Speed constant | rpm/V | 5040 | 4051 | 2016 | 916 |
| Mechanical time constant | ms | 3.06 | 2.94 | 2.58 | 2.35 |
| Rotor inertia | gcm² | 0.33 | 0.33 | 0.33 | 0.33 |
Optical Gearbox
| N/A | |
|---|---|
Optional encoder
| N/A | |
|---|---|
Terminal data
| Terminal data | |||
|---|---|---|---|
| Teminal model : | Pin 1 ~ Pin 3 单排针间距2.0mm 3Pin | Pin 4 ~ Pin 8 | MOLEX51021-0500端子间距1.25mm 5Pin |
| Pin 1 电机绕组 Motor winding 2 | Pin 2 电机绕组 Motor winding 3 | Pin 3 电机绕组 Motor winding 1 | Pin 4 霍尔传感器 Hall Vcc 3.3~5V |
| Pin 5 霍尔传感器 Hall GND | Pin 6 霍尔传感器 Hall sensor 3 | Pin 7 霍尔传感器 Hall sensor 1 | Pin 8 霍尔传感器 Hall sensor 2 |
Other Specifications
| Other specifications | |||
|---|---|---|---|
| Operating temperature range | -20…+80℃ | Bearing type | Sleeve bearings |
| Number of pole pairs | 1 | Weight of motor | 27g |
| Number of phases | 3 |
Engineering Overview
FA-1722RB (3+5P) long-body coreless brushless DC motor abandons mechanical brush friction, eliminating abrasion loss and reducing electromagnetic interference for long-term stable continuous operation. Ultra-low consistent rotor inertia delivers fast dynamic response and completely cogging-free smooth rotation under variable loads. It covers ultra-wide voltage from low 5V portable devices to industrial 24V equipment, fully matching multi-scenario power supply demands. The split dual-terminal structure separates power and signal circuits to simplify wiring layout and improve control signal stability. Matched gearbox amplifies output torque, while hall sensor feedback supports high-precision closed-loop speed and position control for medium-load miniature automation equipment.
Typical Applications:
• Medium-load portable medical & beauty instruments
• Mini robot joint micro actuators
• Small industrial automated transmission modules
• Battery-powered precision laboratory testing equipment
Need wide voltage or split 3+5Pin terminal customization?
FA-1722RB (3+5P) 5W long-body brushless coreless motor offers 5V/7.4V/12V/24V multi performance versions with independent power-signal split connectors. We can optimize coil parameters and match gearbox & encoder based on your load and installation requirements.