Surf water-jet drive HJ90

for boatelectricstainless steel

Overview
HJ90 compact water-jet pump by HVON, max 50 kg thrust with 90 mm impeller. Compatible with 24V / 48V / 60V / 72V brushless motors. Aluminum-alloy cast housing with anti-corrosion treatment. Designed for 1–3 m boats, USVs and small rescue craft. Price shown does NOT include motor and ESC.

Key specifications
Model: HJ90
Impeller diameter: 90 mm
Maximum thrust: 50 kg
Compatible voltage: 24V / 48V / 60V / 72V (brushless motor)
Thrust at 3 kW input: 26 kg
Housing material: Aluminum alloy (anti-corrosion treated)
Impeller & shaft: Stainless steel
Color: Black
Suitable boat length: 1–3 m

Water-jet propulsion — Superior maneuverability
Water-jet propulsion provides superior maneuverability in confined waters and complex currents. The HJ90 produces less noise and vibration compared with conventional propellers, offering smoother, quieter operation suited for USV survey and patrol missions.

High thrust, low power demand
At 3 kW input the HJ90 generates 26 kg of thrust; pairing with a higher-power brushless motor increases thrust up to 50 kg. The pump delivers a favorable power-to-thrust ratio for electric craft.

Durable construction
The one-piece aluminum-alloy cast housing is precision-machined and corrosion-treated for reliable operation in fresh and salt water. Impeller and shaft are stainless steel.

Proven performance
Tested on the HV230 rescue boat (2.3 m length, 55 kg gross weight), a single HJ90 with a 48V brushless motor achieved speeds over 25 km/h under test conditions.

Flexible configuration
Suitable for boats 1–3 m in length. Install a single HJ90 for small USVs or two units for larger craft requiring additional thrust or redundancy.

Applications

• Aquaculture USVs
• Law enforcement patrol boats
• Survey & mapping USVs
• Small rescue craft
• RIB tenders
• Electric surfboards
• Remote-controlled boats
• Scientific research platforms

What’s included
Pump unit only. Motor and ESC sold separately and must be matched to the application.

Technical specifications

• Code: HJ90
• Series: Water-jet Pump
• Model: HJ90
• Impeller diameter: 90 mm
• Maximum thrust: 50 kg
• Thrust at 3 kW input: 26 kg
• Compatible voltage: 24V / 48V / 60V / 72V (brushless motor)
• Housing material: Aluminum alloy (anti-corrosion treated)
• Impeller & shaft: Stainless steel
• Color: Black
• Brand: HVON
• Suitable boat length: 1–3 m
• Notes: Price shown does NOT include motor and ESC; product is made-to-order.