Harbormaster BT-400 Bow Thruster

Name: Harbormaster BT-400 Bow Thruster
Brand: Harbormaster Marine

Harbormaster BT-400 tunnel thruster: 1200–1400 rpm input, 48-inch four-blade manganese bronze Kaplan propeller, min. 9,400 lbs thrust at 492 rpm; spiral bevel gears, made in USA.

Description

The Harbormaster BT-400 is a tunnel (bow/stern) thruster consisting of a right-angle gear set, watertight pod (gear case), pod supporting structure, propeller and corrosion-resistant steel tunnel. All material is manufactured and assembled in the USA.

Technical data

Input speed: 1200–1400 rpm (horizontal or vertical input)
Propeller: 48-inch four-blade manganese bronze Kaplan type, maximum 492 rpm
Thrust: not less than 9,400 lbs at maximum propeller speed
Spiral bevel gears, lapped matched set, AGMA quality 8-10
Forged steel pinion and propeller shafts on tapered roller bearings
Mechanical propeller shaft seal
Pod-to-tunnel diameter ratio not exceeding 3:1
Lubrication by oil immersion with 10-gallon static lube oil tank, mounted at least 10 ft above the load waterline
Abrasion and corrosion resistant rolled steel tunnel with welded chill rings for distortion control and alignment of shipyard-fitted extensions
Warranty: 12 months

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