FA-1725R (For Tattoo) Coreless Brushed DC Motor
The FA-1725R is a 4W coreless brushed DC motor specially engineered for tattoo equipment. It features Φ17mm outer diameter and 25mm body length, adopting oil-impregnated sleeve bearings and high-quality precious metal brushes. With steady torque output, ultra-low vibration and reliable continuous operation, it perfectly matches the working characteristics of professional tattoo machines. Four mainstream voltage versions are available, and it can be equipped with customized gearboxes and encoders to meet diverse equipment modification demands.
• Dimension: Φ17mm × Length 25mm
• Rated Power: 4W
• Voltage Options: 5.8V / 8.0V / 9.0V / 12.0V
• Precious metal brush & oil-impregnated sleeve bearing
• Optional customized gearbox and encoder
Mechanical Dimensions
Dimensions are in mm. Please refer to the datasheet for tolerances and mounting details.
Performance Parameters
| Motor specifications | 97A | 27A | 45A | 04A | |
|---|---|---|---|---|---|
| Nominal voltage | V | 5.8 | 8.0 | 9.0 | 12.0 |
| No load speed | rpm | 9200 | 8000 | 9810 | 10000 |
| No load current | mA | 30 | 25 | 20 | 15 |
| Nominal speed | rpm | 7360 | 6000 | 7357 | 7500 |
| Nominal torque | mNm | 3.88 | 2.85 | 5.54 | 5.06 |
| Nominal current | A | 0.67 | 0.32 | 0.64 | 0.45 |
| Stall torque | mNm | 19.4 | 11.1 | 22.0 | 20.1 |
| Stall current | A | 3.22 | 1.19 | 2.53 | 1.76 |
| Terminal resistance | Ω | 1.8 | 9.36 | 8.58 | 6.8 |
| Torque constant | mNm/A | 5.9 | 9.36 | 8.58 | 11.23 |
| Speed constant | rpm/V | 1.586 | 1000 | 1090 | 833 |
| Mechanical time constant | ms | 5.7 | 7.0 | 5.9 | 5.5 |
| Rotor inertia | gcm² | 1.21 | 1 | 1.34 | 1.12 |
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 | 25.09g |
Engineering Overview
This FA-1725R model is professionally optimized for tattoo drive systems. Adopting classic coreless rotor structure and 5-piece commutator combined with precious metal brushes, it completely eliminates cogging torque, ensuring ultra-stable operation and minimal vibration — a core advantage for improving tattoo precision and comfort. This motor features outstanding rated torque and diversified low-voltage specifications covering 5.8V to 12V, which matches the mainstream power supply schemes of tattoo machines. With short mechanical time constant and moderate rotor inertia, it delivers sensitive dynamic response and stable speed output during long-duration work. Users can select matched gearboxes and encoders to adjust parameters, suitable for original equipment assembly and equipment refitting.
Typical Applications:
• Professional rotary tattoo machines
• Semi-permanent makeup drive devices
• Tattoo auxiliary precision tools
• Handheld cosmetic tattoo equipment