FA-1625R Coreless Brushed DC Motor
The FA-1625R is a high-power 4W coreless brushed DC motor with Φ16mm outer diameter and 25mm body length. Adopting iron-free coreless rotor and long-life precious metal brushes, it delivers outstanding torque output and reliable performance for heavy-load scenarios. It is fully compatible with dedicated G16MF gearbox and EM16 series incremental & absolute encoders for high-precision closed-loop control.
• Dimension: Φ16mm × Length 25mm
• Rated Power: 4W
• Voltage Options:3.8V / 6.0V / 12.0V / 24.0V
• Precious metal brush & oil-impregnated sleeve bearing
• Optional G16MF gearbox & EM16 multi-type encoder
Mechanical Dimensions
Dimensions are in mm. Please refer to the datasheet for tolerances and mounting details.
Performance Parameters
| Motor specifications | 85A | 21A | 01A | 17A | |
|---|---|---|---|---|---|
| Nominal voltage | V | 3.8 | 6.0 | 12.0 | 24.0 |
| No load speed | rpm | 18990 | 6400 | 10240 | 13300 |
| No load current | mA | 100 | 10 | 15 | 10 |
| Nominal speed | rpm | 16948 | 4848 | 8192 | 11138 |
| Nominal torque | mNm | 2.30 | 2.41 | 3.73 | 3.42 |
| Nominal current | A | 1.29 | 0.27 | 0.34 | 0.21 |
| Stall torque | mNm | 21.4 | 9.9 | 18.7 | 21.1 |
| Stall current | A | 11.18 | 1.11 | 1.67 | 1.23 |
| Terminal resistance | Ω | 0.34 | 5.4 | 7.2 | 19.58 |
| Torque constant | mNm/A | 1.87 | 8.77 | 10.96 | 16.88 |
| Speed constant | rpm/V | 4997 | 1006 | 853 | 554 |
| Mechanical time constant | ms | 8.5 | 5.8 | 5.0 | 5.2 |
| Rotor inertia | gcm² | 0.96 | 0.89 | 0.91 | 0.83 |
Optical Gearbox
| Optional gearbox | |
|---|---|
| G16MF | |
Optional encoder
| Optional encoder | |
|---|---|
| EM16 | 增量式(Incremental)1~1024ppr 1~2通道(channel) |
| EM16 | 绝对式（Absolute) 14 bit single turn |
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 | 24.32g |
Engineering Overview
As a high-power model in 16mm series, the FA-1625R features enhanced power output and remarkable stall torque, perfectly adapting to heavy-load working conditions. The coreless rotor structure and 5-segment commutator paired with precious metal brushes eliminate cogging torque, ensuring smooth, low-noise operation. It covers wide voltage range up to 24V, and features short mechanical time constant for rapid dynamic response. Matched with dedicated G16MF gearbox and EM16 encoders, it realizes precise speed and position feedback, ideal for industrial-grade high-load miniature drive equipment that requires long-term stable operation.
Typical Applications:
• Industrial heavy-duty miniature actuators
• High-torque professional medical equipment
• High-pressure micro fluid delivery pumps
• Automated laboratory precision drive mechanisms