FA-3270RB Coreless Brushless DC Motor
FA-3270RB is a flagship 80W high-power coreless brushless DC motor with 32mm outer diameter and 70mm ultra-long housing. Equipped with heavy-duty double ball bearings and built-in 3-channel hall sensor, it delivers stable closed-loop speed control under extreme heavy loads. It adopts independent split wiring design: XHP-3 power terminal and separate JST PHR-5P signal connector to eliminate signal interference. Four winding variants cover 21V, 24V, 36V and 48V wide industrial voltages. Optional GPA32 planetary gearbox and EM22 series incremental/absolute encoders support heavy-duty micro drive systems.
• Dimension: Φ32mm × Length 70mm
• Rated Power: 80W
• Voltage Options: 21V(10A) / 24V(15A) / 36V(06A) / 48V(02A)
• Heavy-duty double ball bearings + integrated 3CH hall sensor (3.3~5V VCC)
• Split dual wiring (XHP-3 power + JST PHR-5P signal); Optional GPA32 gearbox & EM22 encoders
Mechanical Dimensions
Dimensions are in mm. Please refer to the datasheet for tolerances and mounting details.
Performance Parameters
| Motor specifications | 10A | 15A | 06A | 02A | |
|---|---|---|---|---|---|
| Nominal voltage | V | 21 | 24 | 36 | 48 |
| No load speed | rpm | 16500 | 16500 | 15000 | 16500 |
| No load current | mA | 360 | 400 | 210 | 190 |
| Nominal speed | rpm | 15100 | 15100 | 13800 | 17200 |
| Nominal torque | mNm | 81.68 | 76.2 | 60.1 | 87.29 |
| Nominal current | A | 7.05 | 5.85 | 2.81 | 3.7 |
| Stall torque | mNm | 1021 | 952.5 | 750.1 | 1091.2 |
| Stall current | A | 84 | 68.57 | 32.73 | 44.04 |
| Terminal resistance | Ω | 0.25 | 0.35 | 1.1 | 1.09 |
| Torque constant | mNm/A | 11.91 | 13.61 | 22.46 | 27.22 |
| Speed constant | rpm/V | 785 | 687 | 416 | 343 |
| Mechanical time constant | ms | 2.64 | 2.83 | 3.26 | 2.77 |
| Rotor inertia | gcm² | 16.31 | 16.31 | 16.31 | 16.31 |
Optical Gearbox
| Optional gearbox | |
|---|---|
| GPA32 | |
Optional encoder
| Optional encoder | |
|---|---|
| EM22 | 增量式(Incremental) 1~16384ppr 1~3通道(channel) |
| EM22 | 绝对式(Absolute) 21 bit single turn |
Terminal data
| Terminal data | ||
|---|---|---|
| Teminal model : Pin 1 ~ Pin 3 XHP-3 XH2.5 AWG22 PE | Pin 4 ~ Pin 8 JST PHR-5P PH2.0 AWG26 PE | |
| Pin 1 电机绕组Motor winding 1 黑色Black | Pin 2 电机绕组Motor winding 2 黄色Yellow | Pin 3 电机绕组Motor winding 3 红色Red |
| Pin 4 霍尔传感器Hall GND 黄色Yellow | Pin 5 霍尔传感器Hall sensor 2 蓝色Blue | Pin 6 霍尔传感器Hall sensor 3 白色White |
| Pin 7 霍尔传感器Hall sensor 1 黑色Black | Pin 8 霍尔传感器Hall Vcc 3.3~5V 红色Red |
Other Specifications
| Other specifications | |||
|---|---|---|---|
| Operating temperature range | -20…+80℃ | Bearing type | Ball bearings |
| Number of pole pairs | 1 | Weight of motor | 243g |
| Number of phases | 3 |
Engineering Overview
FA-3270RB coreless BLDC eliminates cogging torque and brush friction for ultra-smooth, low-noise continuous heavy-duty operation. Oversized rotor delivers industry-leading stall torque; split power/signal wiring avoids electromagnetic interference. Reinforced double ball bearings resist severe vibration and impact. Wide 21~48V voltage coverage fits lithium power tools and industrial equipment. Matched GPA32 gearbox and high-res EM22 encoders realize precise torque & position closed-loop control.
Typical Applications:
• Heavy-duty metal/jade industrial carving & grinding power tools
• Large load miniature robot main joint actuators
• High-power professional medical & beauty equipment
• Industrial heavy-load automated transmission modules