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D85L134 Water-cooled 120kv 11kw 7t Brushless Motor

Designed for high-performance electric foil (eFoil) and compact marine applications, the D85L134-WC-120KV motor delivers a balance of speed and torque within an exceptionally compact 85mm diameter footprint. Featuring an advanced 12-slot 10-pole water-cooled design, it provides up to 11.5 kW of peak power and 21.5 N·m of torque, reaching speeds of 12，096 RPM. Its high efficiency (90%) and fully potted IP68 construction make it ideal for direct integration into demanding underwater propulsion systems where space, power, and reliability are critical.

• Peak Power: 11.5 kW • Peak Torque: 21.5N·m • Max Speed: 12,096 RPM
• Waterproof Rating: IP63 • Weight: 2.5 kg

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

eFoil Motor Water-Cooled Motor Brushless Motor

Features

Specification

Dyno Tested Data

Dimension

Key Features

Optimized for eFoils & Thrusters: Perfect balance of KV (120) for responsive speed and strong thrust in compact drives.
Efficient Water-Cooled Design: Maintains optimal temperature for sustained high-power output and longevity.
Compact & Lightweight: High power-to-weight ratio in a minimal D85xL134mm package.
Fully Submersible (IP68): Potted and sealed for permanent, reliable underwater operation.

Applications: Underwater thruster less than 10m

Electric Propulsion for various watercrafts

Efoil / Waterbike
Jet Surf/Surboard
Underwater thruster
Small boat /SUP / Kayak
POD drive
Jetski / Speed Boat
Yacht

Item	Specification
Model	D85L134-WC-120KV
Working Voltage Range	12-24S (40-100.8V)
Max. Free Speed	12，096 rpm
Speed Constant (Kv)	120
Torque Constant (Kt)	0.10594 N·m/A
No Load Current (at 8.4V)	1.4 A
Max. Output Power	11.5 kW
Peak Torque (at 60% duty)	21.5 N·m
Peak Current	164 A
Max. Motor Efficiency	90%
Weight	2.5 kg
Configuration	12N/10P
Cooling Solution	Water Cooling
Dimension (Dia. x Length)	D85 x L134 mm
Max. Working Temperature	120ºC
Insulation Voltage & Leak Current	AC500V / 10mA / 3s
Shaft Output	D12 x L30 mm
Lead Wires Extension	150 ±5 mm
Connector	10mm Golden Plug
Life Span	10，000 H