4270 High-Efficiency Marine Motor – 650W | 5kg Thrust | 87% Efficiency for Unmanned Ship & USV
$ 154
Ultra-high efficiency brushless motor delivering 87% peak efficiency and 5kg thrust. IP68 waterproof. Designed for unmanned ships, USV, and small underwater vehicles.
KEY FEATURES
• 87% peak efficiency – Industry-leading efficiency for extended runtime
• IP68 fully waterproof – Suitable for marine and underwater operation
• 650W peak power – Efficient propulsion for unmanned ships
• 4.48 N·m stall torque – Strong thrust for quick response
• 5kg maximum thrust – Ideal for small to medium USV
• 12-40V wide voltage range – Compatible with 4S to 10S Li-ion batteries
• Ultra-low no-load current 1.2A – Minimal standby power draw
• Ultra-lightweight 350g design – Easy integration into compact vessels
• High torque density – 12.8 N·m per kg
• CW/CCW bidirectional – Forward and reverse thrust capability
• Locked rotor protection – Prevents damage during stall
• 3000+ hour lifetime – Reliable for continuous operation
Quantity
-
+
Inventory
10000
隐藏域元素占位
- Product Description
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规格参数 SPECIFICATION
型 号
Mode重 量
Weight电压
Voltage无负荷
No load最大效率点
At Maximum Efficiency堵转
At stall电压范围
Voltage Range额定值
Nominal转速
电流
转速
电流
转矩
输出功率
效率
转矩
电流
Speed
Current
Speed
Current
Torque
Output
Efficiency
Torque
Current
G
V
V
r/min
A
r/min
A
mN.m
W
%
mN.m
A
4270
350
12-40
25
8750
1.2
6500
29
880
600
87
4475
70
OUTLINE DRAWING
🌊 High-Efficiency Marine Series4270 High-Efficiency Marine Motor
650W | 5kg Thrust | 87% EfficiencyUltra-high efficiency brushless motor delivering 87% peak efficiency and 5kg thrust. IP68 waterproof. Designed for unmanned ships, USV, and small underwater vehicles.
650WMax Power5kgMax Thrust12-40VVoltage Range350gMotor WeightTechnical SpecificationsModel4270Motor TypeBrushless DCVoltage Range12 – 40V DCRated Voltage25VNo-Load Speed8,750 RPMNo-Load Current1.2 ARated Speed6,500 RPMRated Current29 ARated Torque0.88 N·mRated Power600 WMax Efficiency87%Stall Torque4.48 N·mStall Current70 AMotor Weight350 gWaterproof RatingIP68Performance Highlights4.48 N·mStall Torque (4,475 mN·m)650 WPeak Power87%Maximum Efficiency5 kgMaximum ThrustKey CharacteristicsIP68 WaterproofFully submersible design87% EfficiencyUltra-high efficiency4.48 N·m TorqueStrong thrust for compact size650W Peak PowerEfficient marine propulsion12-40V Wide Voltage4S to 10S Li-ion compatibleCW/CCWBidirectional rotationLocked Rotor ProtectionStall protection built-inLong Life3000+ hours ratedPerformance Test DataTest condition: 25V input, ambient temp 25°C, with marine propellerParameter No Load Max Efficiency Rated Stall Speed (RPM) 8,750 7,200 6,500 0 Current (A) 1.2 15 29 70 Torque (N·m) 0 0.55 0.88 4.48 Power (W) 0 414 600 0 Efficiency (%) 0 87 85 0 * At peak power (650W), the motor delivers 5kg thrust. 87% efficiency at optimal operating point.
Key Features- 87% peak efficiency – Industry-leading efficiency for extended runtime
- IP68 fully waterproof – Suitable for marine and underwater operation
- 650W peak power – Efficient propulsion for unmanned ships
- 4.48 N·m stall torque – Strong thrust for quick response
- 5kg maximum thrust – Ideal for small to medium USV
- 12-40V wide voltage range – Compatible with 4S to 10S Li-ion batteries
- Ultra-low no-load current 1.2A – Minimal standby power draw
- Ultra-lightweight 350g design – Easy integration into compact vessels
- High torque density – 12.8 N·m per kg
- CW/CCW bidirectional – Forward and reverse thrust capability
- Locked rotor protection – Prevents damage during stall
- 3000+ hour lifetime – Reliable for continuous operation
Applications🚢 Unmanned Ship / USV 🔍 Underwater Inspection ROV 🎣 Fishing Boat Trolling Motor 🛥️ Small Electric Boat 🚣 Kayak / SUP Propulsion 📡 Autonomous Research VesselOEM Customization- KV customization – 200KV to 600KV available
- Voltage optimization – 24V / 25V / 30V / 36V
- Shaft length and diameter modification
- Waterproof connector type (SubConn, custom)
- Propeller mounting thread and adapter
- Hall sensor integration for FOC control
- IP rating upgrade (IP68 depth rating)
- Custom winding for specific efficiency/power profiles
Frequently Asked QuestionsWhat is the maximum efficiency of this motor?The 4270 delivers 87% peak efficiency – the highest in its class, ideal for extended runtime missions.What is the maximum thrust of this motor?5kg maximum thrust with proper propeller selection, ideal for unmanned ships and USV.What voltage battery is recommended?25V (6S-7S Li-ion) is recommended for optimal efficiency. The motor supports 12-40V.What controller is recommended?We recommend a 25V-30V 40A FOC controller with waterproof enclosure for marine applications.Is this motor waterproof for marine use?Yes. The motor is IP68 rated, fully sealed for underwater and marine operation.What is the expected motor lifetime?With proper maintenance, the motor provides 3000+ hours of reliable operation.
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