FA-2238RB Coreless Brushless DC Motor
The FA-2238RB is a medium-size 4W coreless brushless DC motor with 22mm outer diameter and extended 38mm body length. It adopts high-precision ball bearings and built-in 3-channel hall sensor for stable closed-loop speed and position feedback. This model provides four high-voltage winding variants covering 12V, 24V, 30V and 32V industrial power supplies, each with differentiated speed-torque performance curves. Custom planetary gearbox and incremental/absolute encoder are optional to build low-noise miniature closed-loop drive systems for long-duration continuous operation.
• Dimension: Φ22mm × Length 38mm
• Max Transmission Power: 4W
• Voltage Options: 12V(14B) / 24V(28B) / 30V(06B) / 32V(19B)
• 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 | 14B | 28B | 06B | 19B | |
|---|---|---|---|---|---|
| Nominal voltage | V | 12 | 24 | 30 | 32 |
| No load speed | rpm | 12800 | 11000 | 15000 | 18000 |
| No load current | mA | 90 | 60 | 70 | 90 |
| Nominal speed | rpm | 11000 | 9500 | 13000 | 15600 |
| Nominal torque | mNm | 5 | 3.5 | 4.63 | 6.48 |
| Nominal current | A | 0.64 | 0.22 | 0.3 | 0.46 |
| Stall torque | mNm | 38.6 | 27 | 35.6 | 49.8 |
| Stall current | A | 4.32 | 1.3 | 1.86 | 2.94 |
| Terminal resistance | Ω | 2.78 | 18.5 | 16.1 | 10.9 |
| Torque constant | mNm/A | 8.77 | 20.42 | 18.72 | 16.63 |
| Speed constant | rpm/V | 1066 | 458 | 500 | 562 |
| Mechanical time constant | ms | 4.15 | 5.1 | 5.28 | 4.52 |
| Rotor inertia | gcm² | 1.25 | 1.25 | 1.25 | 1.25 |
Optical Gearbox
| Optional gearbox | |
|---|---|
| G22MF |
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 :8Pin-26# 3302 引线黑色+JST端子 PH2.0 | |||
| Pin 1 电机绕组 Motor winding 3 | Pin 2 电机绕组 Motor winding 1 | Pin 3 电机绕组 Motor winding 2 | Pin 4 霍尔传感器 Hall GND |
| Pin 5 霍尔传感器 Hall sensor 1 | Pin 6 霍尔传感器 Hall sensor 2 | Pin 7 霍尔传感器 Hall sensor 3 | Pin 8 霍尔传感器 Hall Vcc 3.3~5V |
Other Specifications
| Other specifications | |||
|---|---|---|---|
| Operating temperature range | -20…+80℃ | Bearing type | Ball bearings |
| Number of pole pairs | 1 | Weight of motor | 53.7g |
| Number of phases | 3 |
Engineering Overview
FA-2238RB long-body coreless brushless DC motor eliminates mechanical brush contact abrasion and iron core cogging torque, realizing ultra-smooth, low-vibration and low-electromagnetic-interference rotation with extended service life. Equipped with double precision ball bearings, it features outstanding radial load resistance and quiet operation, perfectly suitable for long-hour continuous industrial operation. Consistent low rotor inertia delivers stable dynamic response under light and medium variable loads. It covers a wide high industrial voltage range from 12V up to 32V, matching various industrial power supply standards. Built-in hall sensors support real-time speed feedback, while matched gearbox amplifies output torque for precision micro positioning, testing and light-load automation drive tasks.
Typical Applications:
• High-end portable medical precision handheld instruments
• Mini robot light-load joint micro actuators
• Small laboratory precision testing and analysis equipment
• Compact industrial miniature automated transmission modules
Need wide high-voltage winding or ball bearing motor customization?
FA-2238RB 4W long-body coreless brushless DC motor adopts low-noise ball bearing structure, offering 12V/24V/30V/32V multiple industrial high-voltage performance variants. Our engineering team can optimize coil parameters and match gearbox & encoder according to your load demands and limited installation space.