Technodrive TM345 2.47:1 Marine Gearbox
Description
Engineered for compact coastal motor cruisers, Technodrive TM345 Hydraulic Marine Gearbox units transfer continuous diesel power across a 2.47:1 reduction ratio. The hydraulic transmission handles 110 continuous horsepower at 4000 input RPM via wet multi-disc clutches. Cast aluminum housing walls shield internal components against torsional flex while powering displacement cruisers and charter workboats through rough chop.
Heat-treated marine-grade aluminum casing alloy forms a light transmission structure that resists structural cracking under engine torque loads. Carburized helical gears cut from case-hardened alloy steel transmit power quietly with minimal tooth friction. Sintered bronze clutch plates with radial oil channels shed heat fast under continuous operation. Equipment interfaces feature SAE 4 or SAE 5 bell adaptations, 7/16-20 JIC diagnostic taps, 1.6 quarts fluid capacity, and 55 lbs dry weight.
Key Features of Technodrive TM345
Boat owners choose to buy Technodrive TM345 hydraulic marine gearbox units when outfitting twin engine cruisers and coastal launches. This responsive hydraulic package couples straight to modern high-speed diesel engines operating in tight engine spaces.
- A 2.47 to 1 reduction ratio matches modern automotive-derived diesel power bands to medium diameter wheels.
- Hydraulic clutch packs squeeze sintered bronze friction discs for instantaneous engagement without shift lag.
- Carburized helical gears transfer up to 185 lb-ft continuous input torque without experiencing tooth surface pitting.
- An internal hydraulic control valve maintains operating circuit pressure between 230 and 280 PSI.
- Lubrication ports support external oil cooling circuits via hose connections to protect internal fluid temperatures.
- Torsional damper drive plates isolate diesel crankshaft harmonics before torque enters the reduction gears.
- Compact casing bounds drop between engine stringer beds without requiring extensive hull modifications.
Hydraulic Clutch Pressure Thresholds
An integrated positive displacement gear pump delivers 250 PSI line pressure during cruising speeds, locking friction plates tight against rotational slip under load. The transmission absorbs 185 lb-ft continuous input torque at 4000 RPM under pleasure craft and light commercial classifications. Operating sump temperature holds between 140°F and 175°F when connected to raw water cooling lines rejecting 180 BTU per minute. The 2.47:1 reduction ratio matches efficient displacement propellers to high-revving marine diesel powerplants.
Companion Flange Bore Metrics
The output companion flange features a 4.00-inch diameter with four precision bolt holes set on a 3.25-inch pitch circle. An integrated deep-groove ball thrust bearing absorbs 9 kilonewtons of continuous forward propeller thrust. Technicians maintain shaft runout within 0.002 inches across the parallel output centerline.
Mechanical Selector Maintenance Schedule
Shifting operates through a mechanical control valve actuated by a standard Morse 33C cable or optional 12-volt electric solenoid. This hydraulic gearbox is not engineered for heavy displacement commercial tugboats or deep ocean trawlers requiring high bollard pull. Scheduled inspections protect internal hydraulic valves.
- Inspect transmission fluid levels on the dipstick gauge each shift prior to engine startup.
- Clean out the magnetic drain plug and internal suction screen every 250 operating hours.
- Drain used ATF fluid down to empty and refill with fresh lubricant every 12 months.
Commercial Warranty Freight Manifest
Technodrive includes a 2-Year limited warranty against casting flaws and component machining defects. Each wooden shipping crate contains the bare hydraulic transmission, input flexible drive plate, oil cooler module with hoses, companion output flange, fluid dipstick gauge, and comprehensive factory workshop service documentation.
Technodrive TM345 2.47:1 Marine Gearbox Product Overview
The NEW Technodrive TM345 2.47:1 Marine Gearbox is designed for vessel owners, marine technicians, shipyards, and repower specialists requiring a dependable hydraulic marine transmission for compatible inboard propulsion systems.
A marine gearbox is a critical drivetrain component that transfers engine power to the propeller while reducing engine speed to match vessel propulsion requirements. The Technodrive TM345 gearbox features a 2.47:1 reduction ratio, providing an effective transmission solution for applications requiring reliable torque transfer, smooth power delivery, and correct propeller matching.
Supplied as a brand-new boxed Technodrive marine gearbox, this transmission provides a practical replacement option for compatible marine propulsion installations.
For customers searching for a Technodrive TM345 2.47:1 marine gearbox for sale, hydraulic marine transmission replacement, or a dependable inboard gearbox solution, the TM345 provides a professional drivetrain component.
Designed for Hydraulic Marine Propulsion Systems
The Technodrive TM345 2.47:1 Marine Gearbox is designed for compatible inboard marine propulsion applications where dependable hydraulic transmission operation and efficient power transfer are required.
Hydraulic marine gearboxes help provide smooth engagement between the engine and propeller system while allowing effective transfer of mechanical power during vessel operation.
This gearbox can be suitable for applications including:
- Recreational boats
- Commercial vessels
- Workboats
- Marine repower projects
- Compatible propulsion system replacements
The correct gearbox selection depends on engine specifications, vessel design, propeller requirements, and installation configuration.
2.47:1 Reduction Ratio Configuration
The Technodrive TM345 Marine Gearbox features a 2.47:1 reduction ratio, an important specification when matching the transmission with the engine and propeller system.
A reduction gearbox allows the engine to operate within its efficient RPM range while reducing propeller shaft speed and increasing available torque.
Correct gearbox matching helps support:
- Efficient power delivery
- Proper propeller operation
- Smooth propulsion integration
- Reliable marine performance
Before installation, buyers should confirm compatibility with engine output, RPM, rotation, and vessel requirements.
Reliable Solution for Marine Replacement and Repower Projects
The NEW Technodrive TM345 2.47:1 Marine Gearbox is a practical solution for compatible marine replacement and repower applications.
Replacing a marine transmission requires careful consideration of the engine, gearbox, shaft system, and propeller combination. A correctly matched gearbox helps maintain reliable drivetrain operation and proper propulsion performance.
This gearbox can support:
- Existing gearbox replacement
- Vessel refurbishment
- Marine drivetrain upgrades
- Compatible new installations
- Repower projects requiring Technodrive transmission compatibility
Professional marine installation is recommended to ensure correct alignment and dependable operation.
Technodrive Hydraulic Marine Transmission Engineering
The Technodrive TM345 Gearbox represents Technodrives experience in developing marine transmission solutions for recreational and professional vessel applications.
A quality hydraulic marine gearbox helps provide dependable power transfer between the engine and propeller while supporting practical integration with compatible propulsion systems.
For vessel owners and marine professionals, selecting the correct Technodrive transmission helps maintain a reliable and efficient marine drivetrain.
Installation and Compatibility Considerations
Before purchasing the NEW Technodrive TM345 2.47:1 Marine Gearbox, buyers should confirm compatibility with their specific vessel and propulsion setup.
Important considerations include:
- Engine model compatibility
- Engine horsepower rating
- Engine rotation
- Reduction ratio requirements
- Shaft alignment
- Propeller specifications
- Mounting configuration
- Hydraulic control requirements
Professional marine installation is recommended to ensure proper fitting and dependable operation.
Worldwide Marine Equipment Supply
The NEW Technodrive TM345 2.47:1 Marine Gearbox is available for customers requiring professional marine transmission supply.
With experience shipping marine engines, transmissions, and spare parts worldwide, this gearbox supports vessel owners, shipyards, marine technicians, and repower specialists requiring dependable drivetrain components.
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | NEW Technodrive TM345 2.47:1 Marine Gearbox |
| Manufacturer | Technodrive |
| Product Type | Hydraulic marine gearbox / transmission |
| Condition | New |
| Reduction Ratio | 2.47:1 |
| Application | Inboard marine propulsion |
| Suitable Applications | Recreational boats, commercial vessels, workboats, compatible marine vessels |
| Main Function | Engine power transfer and propeller speed reduction |
| Transmission Type | Hydraulic marine gearbox |
Key Product Details
The NEW Technodrive TM345 2.47:1 Marine Gearbox is a brand-new boxed hydraulic marine transmission designed for compatible inboard propulsion systems.
Featuring a 2.47:1 reduction ratio, this gearbox provides efficient power transfer between the engine and propeller system.
It is suitable for marine applications requiring dependable Technodrive gearbox replacement, reliable drivetrain integration, and professional marine transmission performance.
Before purchase, buyers should verify engine compatibility, shaft requirements, vessel application, and installation specifications.
Frequently Asked Questions
What is the Technodrive TM345 2.47:1 Marine Gearbox used for
The Technodrive TM345 Marine Gearbox transfers engine power to the propeller while reducing output speed for compatible inboard marine propulsion systems.
What is the reduction ratio of this gearbox
This gearbox features a 2.47:1 reduction ratio.
Is the Technodrive TM345 gearbox new
Yes. It is supplied as a brand-new boxed Technodrive hydraulic marine gearbox.
What vessels can use this gearbox
The TM345 can be suitable for compatible recreational boats, commercial vessels, workboats, and marine propulsion applications.
Can this gearbox be used for repower projects
Yes, when correctly matched with the vessel engine, propeller system, and installation requirements.
Should compatibility be confirmed before purchase
Yes. Buyers should confirm engine specifications, RPM, rotation, mounting requirements, shaft details, and vessel application before installation.
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