Description






Compact Marine Propulsion for Surface Applications
The LETUMOTOR 3130-210KV is a compact, lightweight brushless motor purpose-built for surface marine propulsion. With a 12N16P high-pole configuration, dual precision bearings, and IP45 splash protection, it delivers smooth, quiet, and efficient thrust for RC boats, bait boats, USVs, and custom marine projects.
Key Specifications
| Parameter | Value |
|---|---|
| Model | LETUMOTOR 3130-210KV |
| Product Type | Boat Thruster Motor |
| Motor Size | Ø37.5 x H48.3 mm |
| Stator Size | Ø31 x H30 mm |
| KV Rating | 210 |
| Rated Voltage | 24V |
| No-load Current | 0.5A |
| Phase Resistance | 220 mΩ |
| Motor Weight | 225g |
| Configuration | 12N16P |
| Bearings | 686ZZ + MR126 (Dual) |
| Shaft Diameter | 6mm |
| Prop Mount | 2x M3-D24 |
| Motor Mount | 4x M3-D24 |
| Winding Insulation | 220°C |
| Magnet Grade Temp | 150°C |
| Withstand Voltage | AC500V |
| Protection Level | IP45 |
| Overall Length | ≈128.1 mm |
| Max Efficiency Speed | 4500 rpm |
| Max Efficiency Current | 5.3A |
| Max Efficiency Torque | 0.23 N·m |
Built for Reliability on the Water
-
IP45 Splash Protection: IP45-rated enclosure guards against water splashes and dust ingress for reliable performance in surface marine conditions.
-
AC500V Dielectric Withstand: Robust insulation system ensures safe and stable electrical operation in wet environments.
-
220°C Winding & 150°C Magnet Grade: High-temperature materials maintain consistent performance and thermal stability under sustained marine loads.
-
Dual Bearing Support (686ZZ + MR126): Premium dual bearing configuration delivers smooth, durable operation and extended service life.
-
Precision-Balanced Rotor: Low-vibration design ensures quiet, efficient thrust and a better on-water experience.
Compact, Ready to Integrate
-
Compact Form Factor: Ø37.5 x 48.3mm body with a short overall length of approximately 128.1mm fits easily into tight hull spaces.
-
Standard 6mm Shaft: Easy coupling and alignment with a wide range of marine propellers and drive systems.
-
Standardized Mounting: 2x M3-D24 prop mount and 4x M3-D24 motor mount for fast, reliable installation.
-
Easy Electrical Connection: Direct lead output simplifies wiring and system setup.
Perfect for Surface Marine Applications
-
RC speed boats and racing hulls
-
Bait boats for long-range fishing
-
Unmanned Surface Vessels (USVs) and survey boats
-
Custom hobby marine builds and experiments
-
Small electric propulsion projects
Customization & Bulk Orders
We understand that off-the-shelf specs don’t fit every marine project.
Available customizations include:
-
Custom KV winding
-
Shaft diameter and length modifications
-
Mounting pattern adjustments
-
Lead length and connector type (including waterproof connectors)
-
Bell housing color and laser-engraved logo
Contact our engineering team with your requirements for a tailored solution and volume pricing.







Reviews
There are no reviews yet.