Product overview
The Kpower DF4218 is a brushless motor for 13-15 inch FPV drones used in racing, freestyle flying, and aerial photography. Its electromagnetic construction combines 0.2mm silicon steel laminations, N45H high-temperature magnets, and magnet wire rated to 220°C. The laminations reduce eddy current losses and core heating, while the wire supports winding insulation and thermal resistance. Imported NMB heavy-duty bearings have a design service life exceeding 1,000 hours. The motor uses a 12N14P slot/pole configuration and has a rotor balance specification of ≤5mg.
For mechanical integration, the motor measures Ф49 × 63.5 mm and weighs 245 g with its cable. It has a 6 mm shaft, M6 propeller mounting holes, and 14AWG wire measuring 600mm. Electrical integration uses a 4-8 S voltage range, with a recommended 4-8S 60A ESC and 13/15 inch propeller. Rated power is 402.6 W, maximum power is 1,398 W, and maximum thrust is 5,250 g. Its IP42 rating and 220°C wire temperature rating are distinct specifications; the latter applies specifically to the wire.
Specifications
| Specification | Value & conditions |
|---|---|
| Product identity | Kpower DF4218 FPV Drone Motor |
| Intended application | 13-15 inch FPV drones for racing, freestyle, and aerial photography |
| Stator laminations | 0.2mm silicon steel laminations to reduce eddy current losses and core heating |
| Magnet wire construction | 220°C high-temperature magnet wire for winding insulation and thermal resistance |
| Bearings | Imported NMB heavy-duty bearings, designed for over 1,000 hours of service life |
| Magnets | N45H high-temperature magnets |
| KV | 320 |
| Voltage range | 4-8 S |
| No-load speed | 3200rpm±3% |
| Peak current | 44.8 A |
| Maximum power | 1,398 W |
| No-load current | 1.5A @ 10VAt 10V. |
| Rated power | 402.6 W |
| Maximum thrust | 5,250 g |
| Dimensions | Ф49X63.5 mm (Φ1.93" × 2.50") |
| Weight | 245 gWith cable. |
| Shaft diameter | 6 mm |
| Recommended ESC | 4-8S 60A |
| Recommended propeller | 13/15 inch |
| Propeller mounting holes | M6 |
| Wire | 14AWG*600mm |
| Rotor balance | ≤5mg |
| Slot/pole configuration | 12N14P |
| Internal resistance | 63 mΩ |
| Internal inductance | 43 μH |
| Wire temperature rating | 220 °C |
| Hi-pot test | AC 500V(5S) ≤ 2mAAC 500V for 5S. |
| IP rating | IP42 |
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