Electric Bow Thruster Tunnelset RIM Drive 4.2
The tunnel set is easy to integrate into the boat. The bow thruster tunnels are easy to install due to the various mounting options. The tunnel set is specially designed for difficult conditions where the bow thruster remains protected.
- Nominal current: 208A
- Nominal voltage: 24V
- Weight: 8kg
- Propeller diameter: 133mm
- Outside diameter: 185mm
- Motor length: 110mm
- IP Class: IP68
- Static thrust: 50kg
- Salt water resistant: Yes
- Motor controller included: Yes
- Diameter tube: 162.2mm
- Material box: Stainless steel (on request other materials available)
Warranty terms: two years for non-commercial use and one year for commercial use
The Electric Bow Thruster Tunnelset RIM Drive 4.2 by Rim Drive Technology is a compact, high-efficiency 4.2kW marine propulsion system. It features a shaftless rim-drive design where the propeller acts as the rotor inside an IP68 waterproof housing, delivering roughly 44 kgf of static thrust at 24V
- Power Output / Input: 4.2 kW
- Nominal Voltage: 24V
- Nominal Current: 180A
- Static Thrust: ~44 kgf
- Weight: 5 kg (unit only)
- Propeller Diameter: 133 mm
- Outside Diameter: 191 mm
- Motor Length: 110 mm
- Waterproof Rating: IP68 (fully cast, seal-less/oil-less design)
- Saltwater Resistant: Yes
- Included: Motor controller
- Whisper-Quiet Operation: Eliminating central drive shafts, gears, and gearboxes significantly reduces underwater mechanical noise.
- Immediate Response: Provides instant acceleration for precise docking and tight-space maneuvering.
- Low Maintenance: Contains only one rotating part with no oil changes or vulnerable shaft seals required.
- Space Saving: Compact size allows placement further forward in the bow for optimized weight distribution.
The Rim Drive Technology Electric Bow Thruster Tunnelset RIM Drive 4.2 is a modern 4.2kW electric marine propulsion system featuring a hubless and gearless design. This rim drive configuration integrates the propeller directly as the motor rotor, while the stator coils are permanently mounted within the stainless steel tunnel structure. The technology delivers instant acceleration and high efficiency—exceeding 90%—along with exceptionally quiet operation due to minimized vibration and water cavitation.
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