FA-2355RD Two-Pole Coreless Brushless DC Motor
FA-2355RD is a flagship 67W high-power two-pole coreless brushless DC motor with Φ23 outer diameter and 55mm ultra-long housing. Equipped with heavy-duty double ball bearings and built-in 3-channel hall sensor for stable closed-loop speed under sustained heavy loads. Two-pole slotless rotor brings ultra-fast dynamic response and zero cogging torque. Four winding versions cover 15V, 24V, 28V and 36V industrial voltages. GPA32 planetary gearbox and EM22 incremental/14bit absolute encoders are optional for medium-heavy precision equipment.
• Dimension: Φ23mm × Length 55mm
• Rated Power: 67W
• Voltage Options: 15V(02A) / 24V(03A) / 28V(01A) / 36V(04A)
• Two-pole structure + Double heavy ball bearings + 3CH hall sensor
• Split dual harness (22AWG power + 26AWG 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 | 02A | 03A | 01A | 04A | |
|---|---|---|---|---|---|
| Nominal voltage | V | 15 | 24 | 28 | 36 |
| No load speed | rpm | 15000 | 15000 | 15000 | 15000 |
| No load current | mA | 150 | 180 | 220 | 200 |
| Nominal speed | rpm | 13500 | 13500 | 13500 | 13500 |
| Nominal torque | mNm | 47.75 | 48.25 | 48.46 | 47.69 |
| Nominal current | A | 5.14 | 3.32 | 2.92 | 2.26 |
| Stall torque | mNm | 477.5 | 482.5 | 484.6 | 476.9 |
| Stall current | A | 50 | 31.58 | 27.18 | 20.81 |
| Terminal resistance | Ω | 0.3 | 0.76 | 1.03 | 1.73 |
| Torque constant | mNm/A | 9.55 | 15.28 | 17.8 | 22.9 |
| Speed constant | rpm/V | 1000 | 625 | 535.7 | 416.7 |
| Mechanical time constant | ms | 2.34 | 2.31 | 2.3 | 2.34 |
| Rotor inertia | gcm² | 7.45 | 7.45 | 7.45 | 7.45 |
Optical Gearbox
| Optional gearbox | |
|---|---|
| GPA32 | |
Optional encoder
| Optional encoder | |
|---|---|
| EM22 | 增量式(Incremental) 1~1024ppr 1~3通道(channel) |
| EM22 | 绝对式(Absolute) 14 bit single turn |
Terminal data
| Terminal data | |||
|---|---|---|---|
| Teminal model : Pin 1 ~ Pin 3 | AWG22 | Pin 4 ~ Pin 8 | AWG26 |
| Pin 1 电机绕组Motor winding 1 Red | Pin 2 电机绕组 Motor winding 2 Yellow | Pin 3 电机绕组Motor winding 3 Blue | Pin 4 霍尔传感器Hall GND White |
| Pin 5 霍尔传感器Hall sensor 1 Green | Pin 6 霍尔传感器Hall sensor 2 Yellow | Pin 7 霍尔传感器Hall sensor 3 Brown | Pin 8 霍尔传感器Hall VCC DC 3.3~5V Grey |
Other Specifications
| Other specifications | |||
|---|---|---|---|
| Operating temperature range | -20…+80℃ | Bearing type | Ball bearings |
| Number of pole pairs | 2 | Weight of motor | 136g |
| Number of phases | 3 |
Engineering Overview
FA-2355RD two-pole coreless BLDC adopts double ball bearing structure for outstanding vibration resistance and long service life. Two-pole low-inertia rotor realizes ultra-fast start-stop response and smooth vibration-free rotation without cogging torque. Split color-coded power & signal wiring effectively eliminates electromagnetic interference. Fixed high rated speed with multiple voltage options matches 15/24/28/36V industrial lithium power supplies. Matched GPA32 gearbox amplifies torque for heavy miniature carving, polishing and robot joint drive modules.
Typical Applications:
• Mini jade & metal engraving handheld power tools
• Medium-load miniature robot joint actuators
• High-power professional medical & beauty polishing equipment
• Small industrial heavy-duty deburring automation modules