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Technodrive TM345A 2.47:1 Marine Gearbox
Positioned along 7-degree down-angle propeller shaft lines, the 25 kg Technodrive TM345A-247 down angle marine gearbox manages 110 HP input at 3000 RPM on medium yachts and professional workboats.
- 7 degree down angle lowers shaft.
- 2.47:1 reduction drives commercial propeller lines.
- Hydraulic multi-disc clutch ensures smooth engagement.
- Lubrication reservoir holds 1.6 liters fluid.
- Drip-proof casing weighs 25 kg.
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Description
Match a 7-degree output angle with the Technodrive TM345A 2.47:1 Marine Gearbox. This marine gearbox is specified for medium yachts and professional workboats, with a 2.47:1 reduction ratio and a 7-degree down-angle output configuration.
Model TM345A-247 uses a hydraulic multi-disc clutch and has a maximum pleasure-use input rating of 110 HP (82 kW) at 3,000 RPM. Its separate continuous-duty input rating is 55 HP (41 kW) at 3,000 RPM. The supplied service data lists SAE 20W40 or SAE 15W40 oil and a 0.42-gallon (1.6-liter) oil capacity.
Key Features of Technodrive TM345A
- 2.47:1 reduction ratio identifies the listed speed-reduction configuration for drivetrain matching.
- 7-degree down-angle output configuration defines the supplied output-shaft arrangement.
- 110 HP (82 kW) maximum pleasure-use input rating at 3,000 RPM provides the stated pleasure-duty limit.
- 55 HP (41 kW) maximum continuous input rating at 3,000 RPM identifies the listed continuous-duty limit.
- Hydraulic multi-disc clutch identifies the stated clutch design.
- SAE 20W40 or SAE 15W40 is the listed service oil type.
- 0.42-gallon (1.6-liter) oil capacity provides the stated lubricant fill quantity.
- 55 lb (25 kg) dry weight supports installation and handling planning.
- Specified application for medium yachts and professional workboats helps identify the intended vessel category.
Fitment and Propulsion Use
The Technodrive TM345A-247 is specified for medium yachts and professional workboats. It supports propulsion systems requiring a 2.47:1 reduction ratio and a 7-degree down-angle output configuration. The listed pleasure-use and continuous-duty power ratings are both based on 3,000 RPM and should be matched to the actual engine output and vessel-duty profile. Confirm fitment using the engine model, serial number, rated torque, operating RPM, reduction ratio, and manufacturer drivetrain documentation before ordering.
Installation and Service Considerations
Verify that the 7-degree down-angle output, 2.47:1 reduction ratio, engine power rating, and available installation geometry fit the vessel drivetrain. Use only the listed SAE 20W40 or SAE 15W40 oil and 0.42-gallon oil capacity as directed by the manufacturer’s documentation. Follow the engine and gearbox manufacturer’s installation manuals and product instructions for alignment, lubrication, controls, cooling connections, and service procedures.
Before Ordering the Technodrive TM345A
Verify that Technodrive model TM345A-247 matches your medium-yacht or professional-workboat propulsion system. Confirm the 2.47:1 reduction ratio, 7-degree down-angle output, 110 HP (82 kW) maximum pleasure rating at 3,000 RPM, 55 HP (41 kW) maximum continuous rating at 3,000 RPM, hydraulic multi-disc clutch, SAE 20W40 or SAE 15W40 oil requirement, 0.42-gallon (1.6-liter) oil capacity, and 55 lb (25 kg) dry weight. Confirm compatibility with your engine manufacturer’s documentation before purchase.
Technodrive TM345A Marine Gearbox - 2.47:1 Ratio
| Brand | Technodrive (Twin Disc) |
| Model / SKU | TM345A-247 |
| Country of Origin | Italy |
| Output Configuration | 7° Down Angle |
| Reduction Ratio | 2.47:1 |
| Max Input Power (Pleasure) | 110 HP (82 kW) @ 3000 RPM |
| Max Input Power (Continuous) | 55 HP (41 kW) @ 3000 RPM |
| Clutch Type | Hydraulic Multi-Disc |
| Oil Capacity | 1.6 Liters (0.42 Gallons) |
| Oil Type | SAE 20W40 or 15W40 |
| Dry Weight | 55 lbs (25 kg) |
| Primary Application | Medium Yachts & Professional Workboats |
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