FA-3670RB Coreless Brushless DC Motor
FA-3670RB is a flagship 100W super high-torque coreless brushless DC motor with 36mm outer diameter and 70mm ultra-long housing. It adopts reinforced double ball bearings, built-in 3-channel hall sensor and integrated NTC temperature sensor for real-time overheat monitoring and stable closed-loop control under extreme heavy loads. It uses independent split wiring: VHR-3N power connector + JST A2001H-6P signal connector. Four winding variants cover 24V, 40V and 48V wide industrial lithium voltages. Optional GPA35 planetary gearbox and EM22 series incremental/absolute encoders for heavy power tools and industrial heavy-load actuators.
• Dimension: Φ36mm × Length 70mm
• Rated Power: 100W
• Voltage Options: 24V(02A/06XA) / 40V(04XA) / 48V(08A)
• Double heavy-duty ball bearings + Hall + NTC thermal sensor
• Split dual wiring (VHR-3N power + JST 6P signal); Optional GPA35 gearbox & EM22 encoders
Mechanical Dimensions
Dimensions are in mm. Please refer to the datasheet for tolerances and mounting details.
Performance Parameters
| Motor specifications | 02A | 06XA | 04XA | 08A | |
|---|---|---|---|---|---|
| Nominal voltage | V | 24 | 24 | 40 | 48 |
| No load speed | rpm | 7000 | 16500 | 15500 | 17500 |
| No load current | mA | 160 | 450 | 260 | 320 |
| Nominal speed | rpm | 6300 | 15100 | 14260 | 16100 |
| Nominal torque | mNm | 69.77 | 140.37 | 187.77 | 159.66 |
| Nominal current | A | 2.28 | 10.52 | 7.86 | 6.39 |
| Stall torque | mNm | 734.4 | 1754.6 | 2347.2 | 1995.8 |
| Stall current | A | 22.43 | 126.32 | 95.24 | 76.19 |
| Terminal resistance | Ω | 1.07 | 0.91 | 0.42 | 0.63 |
| Torque constant | mNm/A | 32.08 | 13.61 | 24.15 | 25.67 |
| Speed constant | rpm/V | 291 | 687 | 387 | 364 |
| Mechanical time constant | ms | 2.87 | 2.83 | 1.99 | 2.64 |
| Rotor inertia | gcm² | 30.8 | 30.8 | 30.8 | 30.8 |
Optical Gearbox
| Optional gearbox | |
|---|---|
| GPA35 | |
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 VHR-3N PH3.96 UL1430 AWG20 PVC | Pin 4 ~ Pin 9 JST A2001H-6P PH2.0 UL1332 PTEF AWG24 | |
| Pin 1 电机绕组Motor winding 3 白色White | Pin 2 电机绕组Motor winding 2 黑色Black | Pin 3 电机绕组Motor winding 1 蓝色Blue |
| Pin 4 霍尔传感器Hall GND 黑色Black | Pin 5 霍尔传感器Hall sensor 3 黑色Black | Pin 6 霍尔传感器Hall sensor 2黑色Black |
| 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 黑色Black | Pin 9 温控传感器NTC 黑色Black |
Other Specifications
| Other specifications | |||
|---|---|---|---|
| Operating temperature range | -20…+80℃ | Bearing type | Ball bearings |
| Number of pole pairs | 1 | Weight of motor | 325g |
| Number of phases | 3 |
Engineering Overview
FA-3670RB coreless BLDC eliminates cogging torque and brush wear for ultra-smooth heavy cutting operation. Oversized rotor delivers extreme stall torque; built-in NTC sensor prevents overheating during long-hour continuous work. Split power/signal wiring eliminates electromagnetic interference, reinforced bearings resist severe vibration & impact. Wide 24~48V voltage range matches high-power lithium tools and industrial heavy-load equipment. Matched GPA35 gearbox amplifies torque for low-speed precision machining, EM22 encoders realize high-precision closed-loop positioning.
Typical Applications:
• Heavy-duty metal/jade/stone industrial carving & cutting power tools
• Large-load industrial robot main joint actuators
• High-power professional medical & beauty handheld equipment
• Heavy-load automated industrial transmission modules