Product overview
The YAHREE 3120 is a brushless propulsion component for long-range, heavy-lift and cinematic FPV drone builds. Its two standard winding options suit different battery configurations: 500KV for 6-12S LiPo and 700KV for 4-8S LiPo. Both use a 12N14P slot-and-pole arrangement within a body measuring 37.1+/-0.15 mm in diameter and 52.8+/-0.2 mm long. Motor weight is version-specific, at 149+/-3 g for 500KV and 150+/-3 g for 700KV, giving integrators distinct electrical options within the same stated external dimensions.
The motor combines a hard-anodized 7075 aluminum cover, NMB bearings and a corrosion-resistant electrophoretic iron core. Multi-strand winding and split exhaust blades inside the rotor form part of its cooling architecture. Integration recommendations specify 9-11 inch propellers and a 6S/120A ESC for both versions. Electrical limits remain configuration-dependent: continuous ratings are 60 A/2880 W at 48V for 500KV and 87.5 A/2800 W at 32V for 700KV. Higher peak ratings are limited to 10 seconds, while the magnet has a 150°C operating maximum and a recommended maximum of 120°C.
Specifications
| Specification | Value & conditions |
|---|---|
| Product and purpose | YAHREE 3120 brushless propulsion motor for long-range and heavy-lift FPV drones, offered in 500KV and 700KV versions. |
| Motor diameter | 37.1+/-0.15 mm |
| Motor length | 52.8+/-0.2 mm |
| Slots/poles | 12N14P |
| Motor KV | 500+/-10% RPM/V500KV version. |
| Free-load current | 1.35 A maximum500KV version; at 20V. |
| Phase-to-phase resistance | 69+/-8% mΩ500KV version; at 25°C. |
| Maximum continuous current/power | 60 A / 2880 W500KV version; at 48V. |
| Temperature at maximum continuous current | 101°C500KV version; at maximum continuous current. |
| Maximum current/power | 75 A / 3600 W (10s Max)500KV version; at 48V; 10 seconds maximum. |
| Weight | 149+/-3 g500KV version. |
| Recommended LiPo cells | 6-12S500KV version. |
| Recommended ESC | 6S/120A500KV and 700KV versions. |
| Recommended propeller | 9~11 inches500KV and 700KV versions. |
| Maximum magnet operating temperature | 150°C (recommended maximum 120°C) |
| Motor torque constant | Kt: 225.68 g*cm/A500KV version. |
| Motor constant | Cn: 0.7 rpm/g*cm500KV version. |
| Motor KV | 700+/-10% RPM/V700KV version. |
| Free-load current | 2.3 A maximum700KV version; at 20V. |
| Phase-to-phase resistance | 38.5+/-8% mΩ700KV version; at 25°C. |
| Maximum continuous current/power | 87.5 A / 2800 W700KV version; at 32V. |
| Temperature at maximum continuous current | 105°C700KV version; at maximum continuous current. |
| Maximum current/power | 110 A / 3520 W (10s Max)700KV version; at 32V; 10 seconds maximum. |
| Weight | 150+/-3 g700KV version. |
| Recommended LiPo cells | 4-8S700KV version. |
| Motor torque constant | Kt: 156.45 g*cm/A700KV version. |
| Motor constant | Cn: 1.25 rpm/g*cm700KV version. |
| Cover construction | Aerospace-grade 7075 aluminum cover with hard anodizing for wear resistance and crash durability. |
| Cooling and winding architecture | Active cooling with split exhaust blades inside the rotor and multi-strand winding. |
| Iron core and bearings | Corrosion-resistant electrophoretic iron core and NMB bearings. |
