FA-2245RB Coreless Brushless DC Motor
The FA-2245RB is an ultra-long high-power 20W coreless brushless DC motor with 22mm outer diameter and 45mm extended body length. It adopts heavy-duty precision ball bearings and built-in 3-channel hall sensor for reliable closed-loop speed and position feedback under continuous heavy loads. This model provides four industrial high-voltage winding variants including two 24V versions and two 30V versions, featuring distinct high-speed and high-torque performance curves. Custom planetary gearbox and incremental/absolute encoder are optional to build high-power miniature closed-loop drive systems for industrial micro actuators.
• Dimension: Φ22mm × Length 45mm
• Max Transmission Power: 20W
• Voltage Options: 24V(03A/04A) / 30V(01A/16A)
• Heavy-duty precision ball bearings + integrated 3-phase hall sensor
• Multi-color split power & signal wire layout; Optional planetary gearbox & encoder
Mechanical Dimensions
Dimensions are in mm. Please refer to the datasheet for tolerances and mounting details.
Performance Parameters
| Motor specifications | 03A | 04A | 01A | 16A | |
|---|---|---|---|---|---|
| Nominal voltage | V | 24 | 24 | 30 | 30 |
| No load speed | rpm | 35000 | 22600 | 10500 | 12500 |
| No load current | mA | 220 | 150 | 80 | 110 |
| Nominal speed | rpm | 30400 | 19600 | 9100 | 10800 |
| Nominal torque | mNm | 29.19 | 20.68 | 11.57 | 19.95 |
| Nominal current | A | 4.67 | 2.17 | 0.49 | 0.97 |
| Stall torque | mNm | 224.5 | 159.1 | 89 | 153.5 |
| Stall current | A | 34.29 | 15.69 | 3.26 | 6.7 |
| Terminal resistance | Ω | 0.7 | 1.53 | 9.2 | 4.48 |
| Torque constant | mNm/A | 6.41 | 9.93 | 26.74 | 22.46 |
| Speed constant | rpm/V | 1458 | 941 | 350 | 416 |
| Mechanical time constant | ms | 3.33 | 3.04 | 2.52 | 1.74 |
| Rotor inertia | gcm² | 2.14 | 2.14 | 2.14 | 2.14 |
Optical Gearbox
| N/A | |
|---|---|
Optional encoder
| N/A | |
|---|---|
Terminal data
| Terminal data | |||
|---|---|---|---|
| Teminal model : 8 Pin排针 | |||
| Pin 1 霍尔传感器 Hall sensor 1 | Pin 2 电机绕组 Motor winding 2 | Pin 3 霍尔传感器 Hall GND | Pin 4 霍尔传感器 Hall sensor 3 |
| Pin 5 电机绕组 Motor winding 3 | 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 1 |
Other Specifications
| Other specifications | |||
|---|---|---|---|
| Operating temperature range | -20…+80℃ | Bearing type | Sleeve bearings |
| Number of pole pairs | 1 | ||
| Number of phases | 3 |
Engineering Overview
FA-2245RB ultra-long high-power coreless brushless DC motor completely eliminates mechanical brush abrasion and iron cogging torque, delivering ultra-smooth low-vibration rotation, low electromagnetic interference and extremely long continuous service life. Equipped with double heavy-duty ball bearings, it boasts outstanding radial load resistance and stable performance under long-hour heavy-load industrial operation. Larger rotor inertia and short mechanical time constant support fast acceleration & deceleration under frequent start-stop cycles. It covers mainstream industrial 24V and 30V high voltage standards, with ultra-large stall torque to provide powerful overload capacity. Built-in hall sensors enable real-time speed feedback, while matched gearbox further amplifies output torque for heavy-load micro robot joints, industrial miniature transmission modules and high-power precision handheld equipment.
Typical Applications:
• Heavy-load micro robot joint drive actuators
• High-power portable polishing, carving and grinding equipment
• Medium-load industrial miniature automated transmission modules
• High-end precision dental and surgical handheld instruments
Need 24V/30V high speed & high torque winding customization?
FA-2245RB 20W ultra-long coreless brushless DC motor adopts heavy-load ball bearing structure, offering multiple 24V and 30V industrial performance variants. Our engineering team can optimize coil parameters and match gearbox & encoder according to your continuous heavy-load working demands and limited installation space.