Marine Gearbox ZF 305-3A, ratio 2,037 unused new pair
Gearbox ZF 305-3A, ratio 2,037    
standard scope          
VULKAN VULKARDAN-E 4015 - 11,5"     
ELECTR. ACTUATOR EB 31                    
SAE 1 BELL HOUSING                             
KIT ELECTRIC VALVES 24V ON/OFF      
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Description
 Reverse reduction marine transmission with hydraulically actuated multi-disc clutches
 Suitable for high performance applications in luxury motoryachts, sport fishers, express cruisers etc
 Robust design also withstands continuous duty in workboat applications
 Fully works tested, reliable and simple to install
 Compatible with all types of engines and propulsion systems, including waterjets and surface- piercing propellers, as
applicable
 Design, manufacture and quality control standards comply with ISO 9001
Features
 Lightweight and robust aluminum alloy casing (sea water resistant)
 Case hardened and precisely ground gear teeth for long life and smooth running
 Output shaft thrust bearing designed to take maximum propeller thrust astern and ahead
 Compact, space saving design; 7° down-angle and "Lambda" beveloid gear principle
 Smooth and reliable hydraulic shifting with control lever for attachment of push-pull cable
 Suitable for twin engine installations (same ratio and torque capacity in ahead or astern mode)
 Replaceable oil filter cartridge
 
Duty Definitions
Pleasure Duty
Highly intermittent operation with very large variations in engine speed and power.
Average engine operating hours limit:
500 hours/year
300 hours/year for mechanical gearboxes
Typical hull forms: Planing
Applications: Private, non-commercial, non-charter leisure activities, no racing
Light Duty
Intermittent operation with large variations in engine speed and power.
Average engine operating hours limit:
2500 hours/year
(for hydraulic transmissions smaller than ZF 2000 series, 2000 hours/year)
Typical hull forms: Planing and semi-displacement
Typical applications: Private and charter, sport/leisure activities, naval and police activities
Medium Duty
Intermittent operation with some variations in engine speed and power.
Average engine operating hours limit:
4000 hours/year
(for hydraulic transmissions smaller than ZF 2000 series and workboat ZF W2700 series, 3500
hours/year)
Typical hull forms: Semi-displacement and displacement
Typical applications: Charter and commercial craft (example: crew boats), and naval and police activities
Continuous Duty
Continuous operation with little or no variations in engine speed and power.
Average engine operating hours limit: Unlimited
Typical hull forms: Displacement
Typical applications: Heavy duty commercial vessels
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The Marine Gearbox ZF 305-3A, ratio 2.037, unused pair ensures reliable marine performance. ETC specializes in marine engines, transmissions, and industrial system services, providing premium parts. This durable gearbox is ideal for tough marine environments, guaranteeing efficiency and longevity. We offer worldwide delivery for expert service regardless of your project location.
 
3208203003, SHAFT ASSEMBLY, SECONDARY, ZF MARINE, ZF305-3A 
ZF MARINE SPARE PART 3208199006 RATIO CHANGE KIT 305-3A
Torsional Vibration and Torsional Couplings
The responsibility for ensuring torsional vibration compatibility rests with the overall propulsion system integration responsible party.
Compatibility check of torsional vibration must include excitations induced by engine governor. ZF cannot accept any liability for gearbox noise
or for damage to the gearbox, the flexible coupling or to other parts of the drive unit caused by torsional vibrations. Contact ZF for further
information and assistance.
For single engine powered boats, where loss of propulsion can result in loss of control, ZF recommends the use of a torsional limit stop. It is
the buyer's responsibility to specify this option. ZF cannot accept any liability for personal injury, loss of life or damage or loss of property due
to the failure of the buyer to specify a torsional limit stop.
ZF selects torsional couplings on the basis of nominal input torque at commonly rated engine speeds. Consult ZF for details concerning speed
limits of standard offered torsional couplings, which can be below transmission limits. Special torsional couplings may be required for Survey
Society requirements.