Product overview
The GEPRC GEP-GR1408 3750kv is a brushless propulsion motor for builds using 3-inch propellers. Its physical architecture combines a 14mm-diameter, 8mm-high stator with N52H curved magnets and a 0.15mm stator-to-magnet air gap. The precision CNC-machined 7075 aluminum body incorporates a ventilated bell, while Japanese NSK bearings support rotation. Dynamic balancing and the streamlined housing are features of the motor’s mechanical design. This is a propulsion component for integration into a UAV, with its own electrical leads and propeller attachment hardware.
Installation planning should use the motor’s 18.2mm diameter, 32mm height, 2mm shaft diameter and M5 propeller adapter thread. The configuration specifies 100mm leads in 24AWG and a motor weight of 15.2g excluding wire. Input is 2S–4S, or 7.4–16.8v, with optimization for 4S LiPo operation; maximum current is 22.3A under the stated 180S condition. Additional-information entries also give 200 g and 150 × 150 × 60 mm.
Specifications
| Specification | Value & conditions |
|---|---|
| Manufacturer and product | GEPRC GEP-GR1408 3750kv Motor |
| Product type and intended propeller size | Brushless motor designed for 3-inch propellers |
| Motor speed constant | 3750kv |
| Motor weight | 15.2gNot including wire. |
| Additional-information weight | 200 g |
| Additional-information dimensions | 150 × 150 × 60 mm |
| Configuration | 9N12P |
| Cell count | 2~4SLiPo battery. |
| Maximum current | 22.3A180S. |
| 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 |
| Input voltage | 2S-4S (7.4 – 16.8v) |
| Battery optimization | Optimized for 4S LiPo4S LiPo battery. |
| Magnet material and form | N52H curved magnets |
| Stator-to-magnet air gap | 0.15mm |
| Bearings | Japanese NSK bearings |
| Body construction | Precision CNC-machined 7075 aluminum body |
| Bell ventilation | Large ventilation slots in the motor bell |
| Stator winding | #180 enameled-wire stator coil |
| Lock nut | 5mm aluminum flange lock nut |
| Dynamic balancing | Dynamically balanced body |
| Lead insulation temperature resistance | Silicone rubber leads with 180 °C temperature resistance |
| Thread direction options | CW/CCW thread options |
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