FA-1515R Coreless Brushed DC Motor
The FA-1515R is a compact square-size 2.5W coreless brushed DC motor with Φ15mm outer diameter and 15.2mm body length. Built with iron-free coreless rotor and premium precious metal brushes, it delivers excellent high-speed performance, stable torque and long service life for space-limited precision equipment.
• Dimension: Φ15mm × Length 15.2mm
• Rated Power: 2.5W
• Voltage Options:5.0V / 7.4V / 8.4V / 12.0V
• Precious metal brush & oil-impregnated sleeve bearing
• Optional gearbox and encoder for expanded functions
Mechanical Dimensions
Dimensions are in mm. Please refer to the datasheet for tolerances and mounting details.
Performance Parameters
| Motor specifications | 05A | 20C | 15A | 24C | |
|---|---|---|---|---|---|
| Nominal voltage | V | 5.0 | 7.4 | 8.4 | 12.0 |
| No load speed | rpm | 21200 | 31000 | 20500 | 25000 |
| No load current | mA | 55 | 70 | 25 | 30 |
| Nominal speed | rpm | 15953 | 27900 | 15323 | 21187 |
| Nominal torque | mNm | 1.47 | 1.03 | 1.31 | 1.14 |
| Nominal current | A | 0.69 | 0.51 | 0.35 | 0.27 |
| Stall torque | mNm | 9.2 | 10.3 | 5.2 | 7.5 |
| Stall current | A | 2.63 | 4.51 | 1.32 | 1.63 |
| Terminal resistance | Ω | 1.9 | 1.64 | 6.36 | 7.38 |
| Torque constant | mNm/A | 2.2 | 2.23 | 3.83 | 4.49 |
| Speed constant | rpm/V | 4240 | 4189 | 2440 | 2083 |
| Mechanical time constant | ms | 16.2 | 13.7 | 18.3 | 15.4 |
| Rotor inertia | gcm² | 0.452 | 0.456 | 0.461 | 0.459 |
Optical Gearbox
| N/A | |
|---|---|
Optional encoder
| N/A | |
|---|---|
Other Specifications
| Other specifications | |||
|---|---|---|---|
| Operating temperature range | -20…+80℃ | Bearing type | Sleeve bearings |
| Number of pole pairs | 1 | Brush type | Precious metal brushes |
| Number of phases | 5 | Weight of motor | 10.65g |
Engineering Overview
Featuring a compact short-body design, the FA-1515R adopts iron-free coreless rotor and 5-piece commutator with precious metal brushes to eliminate cogging torque, achieving ultra-high rotating speed and smooth running performance. With a relatively long mechanical time constant and stable rotor inertia, this motor maintains steady speed output under dynamic load changes. It supports four mainstream voltage specifications and optional gearboxes and encoders, which can meet different speed and torque requirements. Lightweight and compact structure makes it an ideal power solution for highly integrated miniature precision devices.
Typical Applications:
• High-speed portable precision testing instruments
• Mini intelligent robot micro drive units
• Compact cosmetic handheld operating tools
• Small precision micro pumps and wearable equipment
Need high-speed winding or combined gearbox & encoder solutions?
FA-1515R provides four standard voltage options and outstanding high-speed performance. Our engineering team can adjust coil parameters and configure supporting gearbox and encoder to match your high-speed, compact installation and multi-scenario usage needs.