Product overview
The GEPRC GR1408 2500KV Motor is a brushless propulsion component designed around 3-inch propellers. Its specified electrical range is 2S–4S LiPo, with the motor optimized for 4S operation. The physical assembly combines a 9N12P configuration, N52H curved magnets, a 0.15mm stator-to-magnet gap and Japanese NSK bearings. A streamlined motor body and large bell ventilation slots support airflow and heat dissipation, while the dynamically balanced body addresses vibration during high-speed rotation.
Integration dimensions are an 18.2mm motor diameter and 32mm motor height, with a 14mm-diameter, 8mm-high stator. The shaft diameter is 2mm, and the propeller adapter uses an M5 thread. Electrical leads are specified as 24AWG with a 100mm cable length. Motor mass is 15.2g excluding wire, and maximum current is listed as 22.3A under the 180S qualification. Separate additional specifications list 200 g and 150 × 150 × 60 mm.
Specifications
| Specification | Value & conditions |
|---|---|
| Manufacturer and product | GEPRC GR1408 2500KV Motor |
| Model identifier | GEP-GR1408 |
| Motor type and intended propeller size | Brushless motor designed for 3-inch propellers |
| KV rating | 2500kv |
| Motor configuration | 9N12P |
| Cell count | 2~4SLiPo battery. |
| Input voltage designation | 2S-4S |
| Motor weight | 15.2gNot including wire. |
| Additional listed weight | 200 g |
| Additional listed dimensions | 150 × 150 × 60 mm |
| Wire gauge | 24AWG |
| Cable length | 100mm |
| Stator diameter | 14mm |
| Stator height | 8mm |
| Shaft diameter | 2mm |
| Motor diameter | 18.2mm |
| Motor height | 32mm |
| Propeller adapter shaft thread | M5 |
| Maximum current | 22.3A180S. |
| Battery optimization | Optimized for 4S LiPo4S LiPo operation. |
| Magnet material and shape | N52H curved magnets |
| Stator-to-magnet air gap | 0.15mm |
| Stator winding | #180 enameled wire |
| Bearings | Japanese NSK bearings |
| Shaft material and manufacture | CNC-machined #7075 aluminum shaft |
| Cooling architecture | Large ventilation slots in the motor bell |
| Flange lock nut | 5mm aluminum flange lock nut |
| Dynamic balancing | Dynamically balanced motor body |
| Silicone rubber lead temperature resistance | 180 °C |
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