FA-2866RB Coreless Brushless DC Motor
FA-2866RB is a flagship 65W ultra-high torque coreless brushless DC motor with 28mm outer diameter and 66mm extended body. It adopts heavy-duty double ball bearings and built-in 3-channel hall sensor for stable closed-loop speed regulation under heavy variable loads. This model offers four winding versions covering 30V, 37V and 48V wide industrial voltages, balancing high-speed and ultra-high stall torque performance. It comes with standard JST PH2.0 8Pin black silicone harness; optional G28MT planetary gearbox and EM22 series incremental/absolute encoders support full closed micro drive systems.
• Dimension: Φ28mm × Length 66mm
• Rated Power: 65W
• Voltage Options: 30V(01XA/02XA) / 37V(02A) / 48V(05A)
• Heavy-duty double ball bearings + integrated 3CH hall sensor (3.3~5V VCC)
• 8Pin-26# black silicone wire, JST PH2.0 connector; Optional G28MT gearbox & EM22 encoders
Mechanical Dimensions
Dimensions are in mm. Please refer to the datasheet for tolerances and mounting details.
Performance Parameters
| Motor specifications | 01XA | 02XA | 02A | 05A | |
|---|---|---|---|---|---|
| Nominal voltage | V | 30 | 30 | 37 | 48 |
| No load speed | rpm | 16500 | 15500 | 20000 | 21000 |
| No load current | mA | 180 | 160 | 200 | 200 |
| Nominal speed | rpm | 14900 | 14000 | 18000 | 19000 |
| Nominal torque | mNm | 69.7 | 86.36 | 83.92 | 85.81 |
| Nominal current | A | 4.18 | 4.82 | 4.93 | 4.11 |
| Stall torque | mNm | 733.7 | 909 | 883.4 | 903.3 |
| Stall current | A | 42.25 | 49.18 | 50 | 41.38 |
| Terminal resistance | Ω | 0.71 | 0.61 | 0.74 | 1.16 |
| Torque constant | mNm/A | 17.01 | 18.11 | 17.31 | 21.39 |
| Speed constant | rpm/V | 550 | 516 | 540 | 437 |
| Mechanical time constant | ms | 2.29 | 1.74 | 2.31 | 2.37 |
| Rotor inertia | gcm² | 10.2 | 7.58 | 7.58 | 7.58 |
Optical Gearbox
| Optional gearbox | |
|---|---|
| G28MT | |
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 | ||
|---|---|---|
| Terminal model：8Pin-26# | 3302 引线黑色+JST端子 PH2.0 | |
| Pin 1 电机绕组Motor winding 3 黑色Black | Pin 2 电机绕组Motor winding 1 黑色Black | Pin 3 电机绕组Motor winding 2 黑色Black |
| Pin 4 霍尔传感器Hall GND 黑色Black | Pin 5 霍尔传感器Hall sensor 1 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 3 黑色Black | Pin 8 霍尔传感器Hall Vcc 3.3~5V黑色Black |
Other Specifications
| Other specifications | |||
|---|---|---|---|
| Operating temperature range | -20…+80℃ | Bearing type | Ball bearings |
| Number of pole pairs | 1 | Weight of motor | 194g |
| Number of phases | 3 |
Engineering Overview
FA-2866RB coreless BLDC eliminates iron cogging torque and brush abrasion for ultra-smooth, low-vibration continuous operation. Heavy-duty double ball bearings offer excellent shock and dust resistance for long-hour heavy loads. Extra-large rotor inertia delivers outstanding stall torque for high-demand working conditions. It supports wide voltage from 30V to 48V, compatible with lithium power tools and industrial miniature automation. Matched G28MT gearbox and high-resolution EM22 encoders realize accurate torque and position closed-loop control.
Typical Applications:
• Heavy-duty cordless engraving, grinding & polishing power tools
• Medium-heavy load miniature robot joint actuators
• High-end professional medical & beauty handheld instruments
• Industrial heavy-load miniature transmission modules