12V/24V Φ28mm Coreless Brushless Planetary Gearbox Motor 5-2500 RPM 4.5 N-m
- Brand: Frankhumotor
- Part Number: 28BLC54-PG
- Lead Time: In Stock
- Unit Price: US $189.00
- *Ship from China
This small electric geared motor combines a diameter 28 mm, coreless brushless DC motor with a high-quality, precision-machined planetary gearbox. With a reduction ratio from 3.8:1 to 759.7:1, it delivers a no-load speed range of 5-2,500 RPM and an output torque of 4.5 N·m. It supports variable-speed control and reversible (CW/CCW) operation. Compared with ordinary brushless DC motors, the coreless motor offers higher efficiency, a higher power-to-weight ratio, faster response, longer service life, and higher torque output. Typical applications include robotics, medical devices, aerospace, and more.
12 VDC Φ28mm Coreless Brushless Planetary Geared Motor
| Reduction Class | Gear Ratio | Rated Voltage | No-load Speed | No-load Current | Rated Speed | Rated Torque | Rated Current | Weight | Total Length |
| (V DC) | RPM | mA | RPM | N-m | A | g | (L+54)(mm) | ||
| 1 | 3.8:1 | 12 | 1174 | 130 | 828 | 0.12 | 1.49 | 241 | 75.5 |
| 5.2:1 | 857 | 130 | 604 | 0.16 | 1.49 | 241 | 75.5 | ||
| 2 | 14.7:1 | 306 | 160 | 216 | 0.40 | 1.52 | 266 | 82.3 | |
| 20.1:1 | 224 | 160 | 158 | 0.55 | 1.52 | 266 | 82.3 | ||
| 27.6:1 | 163 | 160 | 115 | 0.76 | 1.52 | 266 | 82.3 | ||
| 3 | 56.3:1 | 80 | 190 | 56 | 1.39 | 1.5 | 291 | 89.1 | |
| 77.2:1 | 58 | 190 | 41 | 1.90 | 1.55 | 291 | 89.1 | ||
| 105.7:1 | 43 | 190 | 30 | 2.60 | 1.55 | 291 | 89.1 | ||
| 144.7:1 | 31 | 190 | 22 | 3.57 | 1.55 | 291 | 89.1 | ||
| 4 | 215.9:1 | 21 | 220 | 15 | 4.50 | 1.49 | 316 | 95.9 | |
| 295.7:1 | 15 | 220 | 12 | 4.50 | 1.14 | 316 | 95.9 | ||
| 405.1:1 | 11 | 220 | 9 | 4.50 | 0.90 | 316 | 95.9 | ||
| 554.7:1 | 8 | 220 | 7 | 4.50 | 0.70 | 316 | 95.9 | ||
| 759.7:1 | 6 | 220 | 5 | 4.50 | 0.60 | 316 | 95.9 |
4.50 N-m limited by the continuous torque ofthe maximum load of the gearbox.
24 VDC Φ28mm Coreless Brushless Planetary Geared Motor
| Reduction Class | Gear Ratio | Rated Voltage | No-load Speed | No-load Current | Rated Speed | Rated Torque | Rated Current | Weight | Total Length |
| (V DC) | RPM | mA | RPM | N-m | A | g | (L+54)(mm) | ||
| 1 | 3.8:1 | 24 | 2348 | 140 | 2043 | 0.10 | 1.35 | 241 | 75.5 |
| 5.2:1 | 1714 | 140 | 1491 | 0.36 | 1.35 | 241 | 75.5 | ||
| 2 | 14.7:1 | 624 | 170 | 533 | 0.50 | 1.38 | 266 | 82.3 | |
| 20.1:1 | 447 | 170 | 389 | 0.68 | 1.38 | 266 | 82.3 | ||
| 27.6:1 | 327 | 170 | 284 | 1.25 | 1.38 | 266 | 82.3 | ||
| 3 | 56.3:1 | 160 | 200 | 139 | 1.71 | 1.41 | 291 | 89.1 | |
| 77.2:1 | 117 | 200 | 101 | 2.34 | 1.41 | 291 | 89.1 | ||
| 105.7:1 | 85 | 200 | 74 | 3.21 | 1.41 | 291 | 89.1 | ||
| 144.7:1 | 62 | 200 | 64 | 4.31 | 1.41 | 291 | 89.1 | ||
| 4 | 215.9:1 | 42 | 230 | 36 | 4.50 | 1.44 | 316 | 95.9 | |
| 295.7:1 | 30 | 230 | 27 | 4.50 | 1.16 | 316 | 95.9 | ||
| 405.1:1 | 22 | 230 | 20 | 4.50 | 0.90 | 316 | 95.9 | ||
| 554.7:1 | 16 | 230 | 15 | 4.50 | 0.70 | 316 | 95.9 | ||
| 759.7:1 | 12 | 230 | 11 | 4.50 | 0.61 | 316 | 95.9 |
4.50 N-m limited by the continuous torque ofthe maximum load of the gearbox.
Connection
| P1 | P2 | P3 | P4 | P5 | P6 | P7 | P8 |
| MA | MB | MC | HA | HB | HC | GND | +5V |
| BLU | YEL | WHT | BLU | YEL | WHT | BLK | RED |
Contact Frankhumotor for Datasheet, 3D Step. File, Torque Curve

Connection
| P1 | P2 | P3 | P4 | P5 | P6 | P7 | P8 |
| MA | MB | MC | HA | HB | HC | GND | +5V |
| BLU | YEL | WHT | BLU | YEL | WHT | BLK | RED |
- Brake
- Cable & Connector
- Encoder
- Gearbox
- Insulation Class
- Output Shaft
- Waterproof Level

