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D107L165 Water-Cooled 140kv 30kw High Speed 3t Electric Brushless Motor

Engineered for high-performance gearless direct-drive systems, the D107L165-WC-140KV is a water-cooled power core that combines high power with high speed. Featuring an advanced 12-slot 10-pole (12N10P) magnetic circuit within a compact 107x165mm footprint, it delivers up to 31 kW of peak power and 56 N·m of peak torque, reaching speeds of 9,408 RPM. With exceptional power density and efficiency up to 92%, it is the ideal choice for high-speed jet pumps, main marine propulsion, and high-performance underwater thrusters demanding instantaneous response and sustained output.
Thanks to a unique sealing configuration rated IP64, the motor can be integrated into custom watertight enclosures for reliable operation in harsh marine environments. An advanced combined water and air cooling system ensures dependable performance and long service life under continuous high-load conditions.

• Peak Power: 31.0 kW • Peak Torque: 56.0 N·m • Max Speed: 9,408 RPM
• Protection Rating: IP68 • Weight: 6.4 kg

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System Types:
All
Kv:
100-150
Controller Type:
Sensorless
Maximum Voltage:
60V
Maximum Continuous Current:
< 120A

Brushless DC Motor Water-Cooled Motor Jet Pump Motor Marine Motor 140KV Motor

Features

Specification

Dyno Tested Data

Dimension

Key Features

High Power Density & Efficiency: Compact size delivers 31kW peak power and 92% efficiency.
Efficient Hybrid Cooling: Water and air cooling for sustained high-load operation.
Strong Dynamic Torque: 56 N·m peak torque for superior acceleration.
Robust Integrated Protection: IP68 rating and CNC housing for harsh environments.
Flexible Custom Interfaces: Multiple shaft options for easy system integration.

Applications:

High speed gearless use

Jet drive/Jet propulsion/Jet Pump
Electric marine engine
Underwater thruster
POD drive
Rated power reach up to 20Kw under water-cooled situation

Item	Specification
Model	D107L165-140
Working Voltage Range	8-16S (25-67.2V)
Max. Free Speed	9，408 rpm
Speed Constant (Kv)	140
Torque Constant (Kt)	0.06929 N·m/A
No Load Current (at 12V)	4.8 A
Max. Output Power	31.0 kW
Peak Torque (at 60% duty)	56.0 N·m
Peak Current	835 A
Rating Torque	28.0 N·m
Max. Motor Efficiency	92.0%
Weight	6.4 kg
Configuration	12 Slots/10 Poles
Cooling Solution	Water Cooling + Air Cooling
Dimension (Dia. x Length)	D107 x L165 mm
Max. Working Temperature	120ºC
Insulation Voltage & Leak Current	AC500V / 10mA / 3s
Shaft Output	D15 x L30 mm
Lead Wires Extension	6AWG x 300mm
Working Life	8，000 H

D107L165 at 140Kv-60Vdc
Item No.	C_Voltage (V)	C_Current (A)	C_Input Power(W)	M_Voltage (V)	M_Current (A)	M_Input Power(W)	M_Efficiency (%)	M_Speed (rpm)	M_Torque (N*m)	M_Output Power(W)
0	59.98	73.349998	4395.299805	44.740002	61.700001	4363.97998	93.756714	7814	4.999995	4091.52417
1	59.669998	106.800003	6369.060059	44.200001	90.650002	6297.569824	94.789879	7540	7.559995	5969.458984
2	59.439999	133.089996	7907.660156	43.759998	114.449997	7799.720215	94.927437	7319	9.659995	7404.074219
3	59.279999	150.770004	8935.200195	43.529999	130.570007	8791.379883	94.225159	7191	10.999995	8283.691406
4	59.049999	174.570007	10306.17969	43.220001	152.5	10097.95996	94.00705	7016	12.919995	9492.793945
5	58.84	198.550003	11679.16992	42.93	175.100006	11406.59961	93.929092	6848	14.939995	10714.11523

D107L165 at 140Kv - 45Vdc
Item No.	C_Voltage (V)	C_Current (A)	C_Input Power(W)	M_Voltage (V)	M_Current (A)	M_Input Power(W)	M_Efficiency (%)	M_Speed (rpm)	M_Torque (N*m)	M_Output Power(W)
0	44.849998	80.260002	3596.800049	33.169998	68.099998	3559.459961	88.970375	5663	5.339995	3166.86499
1	44.389999	130.300003	5781.339844	32.529999	112.690002	5672.580078	90.672356	5327	9.219995	5143.461914
2	44.200001	152.360001	6730.859863	32.279999	132.919998	6579.540039	90.867058	5190	10.999995	5978.634277
3	43.889999	186.690002	8189.399902	31.9	164.970001	7954.029785	90.332924	4979	13.779995	7185.10791
4	43.580002	221.320007	9639.599609	31.549999	197.919998	9293.669922	89.968391	4781	16.699995	8361.365234
5	43.259998	254.869995	11019.7002	31.219999	230.5	10543.96973	88.998901	4600	19.479996	9384.017578
6	41.200001	303.329987	12486.07031	29.559999	278.230011	11790.78027	87.070793	4161	23.559996	10266.32617