FA-1715RB (8P) Coreless Brushless DC Motor
The FA-1715RB (8P) is a compact 4W coreless brushless DC motor with 17mm outer diameter and 15mm body length. It adopts oil-impregnated sleeve bearings and standard 8Pin pin header integrated with 3-channel hall sensors for closed-loop speed feedback. This model provides two 7.4V and two 12V winding variants with different speed-torque curves. Optional planetary gearbox and encoder are available to build miniature precision drive systems for battery-powered compact devices.
• Dimension: Φ17mm × Length 15mm
• Rated Power: 4W
• Voltage Options: 7.4V(14C/43C) / 12V(56C/69C)
• Oil-impregnated sleeve bearings + built-in 3-phase 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 | 14C | 56C | 43C | 69C | |
|---|---|---|---|---|---|
| Nominal voltage | V | 7.4 | 7.4 | 12 | 12 |
| No load speed | rpm | 34000 | 27000 | 27000 | 35000 |
| No load current | mA | 200 | 180 | 130 | 100 |
| Nominal speed | rpm | 29500 | 23300 | 23300 | 30000 |
| Nominal torque | mNm | 2.94 | 2.54 | 2.6 | 2.91 |
| Nominal current | A | 1.59 | 1.13 | 0.73 | 0.98 |
| Stall torque | mNm | 22.6 | 18.8 | 19.3 | 21.6 |
| Stall current | A | 10.88 | 7.18 | 4.55 | 6.59 |
| Terminal resistance | Ω | 0.68 | 1.03 | 2.64 | 1.82 |
| Torque constant | mNm/A | 2.03 | 2.56 | 3.31 | 3.21 |
| Speed constant | rpm/V | 4594 | 3648 | 2250 | 2916 |
| Mechanical time constant | ms | 3.56 | 3.4 | 5.13 | 3.84 |
| 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 winding1 | 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 | 21g |
| Number of phases | 3 |
Engineering Overview
FA-1715RB (8P) compact coreless brushless DC motor eliminates brush friction to extend service life and reduce electromagnetic interference. Uniform low rotor inertia delivers smooth cogging-free rotation and quick dynamic response. Dual 7.4V lithium battery and dual 12V industrial winding options cover multiple power supply standards. Standard 8Pin integrated terminal simplifies wiring layout, and built-in hall sensors support real-time speed feedback. Matched gearbox can amplify output torque for miniature handheld and wearable precision equipment.
Typical Applications:
• Portable beauty & handheld medical instruments
• Mini wearable intelligent electronic modules
• Micro robot miniature actuators
• Compact battery-powered precision testing devices