FA-4070RC Coreless Brushed DC Motor
The FA-4070RC is a flagship 110W high-power coreless brushed DC motor with Φ40mm outer diameter and 70mm body length. Equipped with durable graphite carbon brushes, 13-segment commutator and heavy-duty ball bearings, it supports long-cycle heavy-load operation. Four voltage grades from 12V to 48V are available, with optional matched gearbox and encoder for closed-loop precision drive.
• Dimension: Φ40mm × Length 70mm
• Rated Power: 110W
• Voltage Options: 12.0V / 18.0V / 24.0V / 48.0V
• Graphite carbon brush + heavy-duty ball bearings
• Optional customized gearbox & multi-channel encoder
Mechanical Dimensions
Dimensions are in mm. Please refer to the datasheet for tolerances and mounting details.
Performance Parameters
| Motor specifications | 02A | 18A | 03A | 04A | |
|---|---|---|---|---|---|
| Nominal voltage | V | 12.0 | 18.0 | 24.0 | 48.0 |
| No load speed | rpm | 4900 | 9800 | 7300 | 7500 |
| No load current | mA | 190 | 330 | 120 | 70 |
| Nominal speed | rpm | 3675 | 7350 | 5475 | 5625 |
| Nominal torque | mNm | 259.8 | 526 | 418.6 | 402.9 |
| Nominal current | A | 11.25 | 30.25 | 13.42 | 6.65 |
| Stall torque | mNm | 1039 | 2104 | 1674 | 1612 |
| Stall current | A | 44.44 | 120 | 53.33 | 26.37 |
| Terminal resistance | Ω | 0.27 | 0.15 | 0.45 | 1.82 |
| Torque constant | mNm/A | 22.92 | 17.2 | 30.77 | 60 |
| Speed constant | rpm/V | 408 | 544 | 304 | 156.25 |
| Mechanical time constant | ms | 6.5 | 6.4 | 6.0 | 6.4 |
| Rotor inertia | gcm² | 137.64 | 138.24 | 137.92 | 138.59 |
Optical Gearbox
| N/A | |
|---|---|
Optional encoder
| N/A | |
|---|---|
Other Specifications
| Other specifications | |||
|---|---|---|---|
| Operating temperature range | -20…+80℃ | Bearing type | Ball bearings |
| Number of pole pairs | 1 | Brush type | Graphite brushes |
| Number of phases | 13 | Weight of motor | 409.48g |
Engineering Overview
FA-4070RC is our top-tier 110W coreless motor built for extreme industrial heavy loads. Graphite brushes and a 13-segment commutator reduce wear under high current to extend service life. Large rotor inertia delivers stable output under variable loads, with four voltage options covering 12V–48V. Ultra-short mechanical time constant ensures fast dynamic response, and supporting gearbox & encoder enable high-precision heavy-load closed-loop control.
Typical Applications:
• Humanoid robot joint actuators
• Heavy industrial automation equipment
• Large-flow high-pressure micro pumps
• 48V heavy-duty portable machinery
• High-power precision lab drives