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Marine reduction gearbox H250A
enginehydraulic systemoil pump

marine reduction gearbox
marine reduction gearbox
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Application domain
engine, oil pump, hydraulic system
Other characteristics
with hydraulic clutch

151 kW, 250 kW (205.3 hp)

Rotational speed

3,800 rpm (23,876 rad.min-1)


H250A Hydraulic Gearbox Hydraulic Marine Gearbox 8⁰ Down-Angle Shaft Maximum Power: 336 Hp (250 Kw) A hydraulic marine gearbox with twin countershaft designed, separated oil-operated multi-disc clutches for ahead and astern drive allowing full rated power to be transmitted continuously in either direction. Due to forward and astern gear ratios are same convenient to twin engine installations. Consists of two separate halves to facilitate servicing. The oil pump and hydraulic control valves being externally designed for easy accessibility. Soft gear lever provides controlling facility with spiral remote control. Suitable for high performance applications, pleasure and heavy duty conditions in fishing and tour boats. Fully works tested, reliable and simple to install. The hydraulic system is nevertheless provided with a mechanical lock-up device for added security, so that in the unlikely event of hydraulic failure the boat can be brought safely back to port. Access to this device is via a detachable cover located on top of the main gearcase. In case of proper usage according to safety usage conditions, proper engine, shaft, propeller selection and errorless assembling occurred has 2 years warranty. Design and manufacturing activities of all Baysan's products comply with ISO 9001:2008. Maximum input rpm limit: Pleasure duty - 336 Hp (250Kw) Heavy Duty - 203 Hp (151 Kw) Maximum input rpm limit: 3800 rpm. Reduction ratio: Standard: Fwd. 2,14:1, Rev. 2,08:1 Optional: Fwd. 2,53:1 Rev. 2,45,Fwd 3,07 Rev 3,06 Oil type: SAE 20W50 / 75W90 Oil capacity: 5.5 lt. Plus required amount to fill the cooling unit. Weight without flange: 82 kg.


*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.