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Clements Marine offer a complete range of steel half couplings and adapters. These can be manufactured with tapered or parallel bores, and with male or female gearbox output flange fitting to suit the individual installation. Split couplings are also available with scalloped flanges that enable the removal of clutch parts with the coupling in situ.
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The Evolution Flexible Shaft Coupling (EFSC) solves misalignment, absorbs and dampens shock loads and shaft vibrations, prolongs the life of machinery, and isolates metal-to-metal for quietness.
The EFSC is comprised of four major components: 1) a spool flange machined to bolt directly to the reduction flange; 2) a large circular rubber flex joint that's replaceable; 3) a split flange coupling for the shaft with pinch bolts, set bolts, and keyway; 4) a retainer cover that serves to protect the rubber flex joint, capture all bolts, and improve overall strength of the unit.
The Evolution Flexible Shaft Coupling uses quality construction and few parts and is easily installed.
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Bollinger Shipyard's Machine/Hydraulic Shops are full service machining facilities with line boring capabilities. They are equipped with computer controlled technology in the manufacture, repair and reconditioning of propeller shafts, stern tubes, bow and stern thrusters, chemical pumps, rudders and other underwater gear. Bollinger has five ABS approved welding procedures used in the manufacturing and repair of shafts.
Bollinger's Quick Repair machine shop outside of New Orleans, LA USA, covers over 32,000 sq. ft. and is among the largest and best equipped machine shops in the nation. It features lathes swinging 32" over the carriage, and 52' between centers and vertical and horizontal boring mills with capacities up to 18'2" in diameter.
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This high performance second generation Duplex stainless alloy is recommended as having one of the finest combinations of properties for propeller shafting and is highly competitive in price. The alloy has excellent corrosion fatigue resistance properties, and combined with high strength and ductility, enables the use of comparatively smaller shaft diameters. The consequent reduction in weight, and size of associated gear offers improved boat performance and economy of installation and boat operation.
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AVAILABLE DIAMETERS FROM DIAM. 3/4" TO DIAM. 8", ALL LENGHTS AVAILABLE UP TO 12 CM, ALL SURVEYS BUREAU VERITAS, LLOYD'S REGISTER, ..
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The Evolution Marine Shaft System (EMSS) is a complete shaft system from engine to propeller. It's comprised of two major components: 1) the "oil-lubricated section" containing a '22' allow stainless steel shaft enclosed in a 316L stainless steel shaft log tube with aft bearing housing and forward thrust bearing housing, and 2) the internal connecting shaft with a splined slip joint and flexible joints at each end.
Other system components include the engine adapter, mounting flanges, and monitor tank with its fittings and hoses.
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For use with less powerful engines, VETUS have designed and developed a shaft assembly - with shaft diameters of 0 25 mm and G 30 mm - which can be installed with a minimum of fuss. Machining, threading and keyway cutting have all been taken care of by VETUS. In addition, these shaft assemblies protect the environment lubrication is ensured by means of raw water, without use of grease or oil. The stern tube is provided with a dual shaft seal, eliminating the need for a stuffing box. These propeller shaft assemblies feature a propeller nut with integrated zinc anode
as standard supply
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The main problem in the design phase of a shaft is to confer minimum vibration and enough mechanical strength to ensure the safety of the system in any condition.
The propeller shaft, which is developed in a single dimension, is subject to torsion even at high rpm, and it is here that our company demonstrates its technological potential.
We make shafts on NC lathes that, in the bigger diameters, allow for the best degree of precision.
This translates into a perfect response to design data and the final product delivered to the client. Perfectly aligned shafts are an indispensable condition for a low level of vibration and the longevity of the installation.
Our production of propeller shafts includes a range from 25 to 205 mm diameter and over 7 m in length. We use AISI 304, AISI 316, V174, and MARINOX 25 stainless steel.
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If your yacht is fitted with a hydraulic gearbox and the propeller continues to rotate when under sail with the engine turned off, it is likely that the gearbox will not be sufficiently lubricated. Autolock has been developed to solve this problem and provides the following significant advantages:-
- Stops prop rotation when sailing.
- Reduces gearbox wear.
- Reduces prop drag.
- Stops cruising prop noise.
- Manufactured from stainless steel and other non-corrosive materials.
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The SCHOTTEL Navigator (NAV) can readily be installed as a complete, self-contained propulsion package on virtually any watercraft. Its main components are the chassis, engine or motor, clutch, cardan shaft and Rudderpropeller.
SCHOTTEL Navigators are highly flexible, easy-to-maintain propulsion systems for vessels of simple design.
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The SCHOTTEL Pump-Jet (SPJ) operates on the principle of a centrifugal pump. An impeller sucks in water from under the hull and forces it into a pump housing. The outlet nozzles are fitted in the bottom plate, making it possible for the jet to be installed in a flat-bottomed hull too.
With a compact design, low loss of buoyancy and low suction effect, Pump-Jets with power ratings up to 3500 kW develop a high thrust even in extremely shallow water and over a wide speed range. Like all SCHOTTEL products, they are distinguished by their excellent manoeuvring properties - as propulsion units for inland and coasting vessels or as independent manoeuvring and standby systems for seagoing ships.
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GUASCOR marine gearboxes are known by their high quality, and are indeed the perfect match for a GUASCOR engine in marine propulsion.
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* Reverse reduction TWO SPEED transmission equipped with electric shift from first to second speed. .
* Suitable for high performance applications in luxury motoryachts, sport fishers, express cruisers and light duty applications. .
* Fully works tested, reliable and simple to install .
* Design, manufacture and quality control standards comply with ISO 9001 .
* Compatible with all types of engines and propulsion systems, including waterjets and surface- piercing propellers, as applicable .
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Intermittent operation with large variations in engine speed and power
Average engine operating
hours limit: 2500 hours/year
(for hydraulic gearboxes smaller than the 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.
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A 360° rotating hydraulic drive for sailing boats, motorized sloops, etc.
Incredible manoeuvrability (360° rotating drive annex propeller!)
No rudder required
No propeller shaft required
Quick and easy assembly
No gearbox
The engine may be positioned in any convenient place
Suitable for diesel engines of up to 30kW (40 hp)
The WillDo Rotadrive has been designed with a view to simplicity in use, optimal manoeuvrability and a minimum amount of moving components. In order to accomplish this, we have selected a hydraulic drive. The assembly consists of four main components:
1. A hydraulic pump, connected to the diesel engine which is permenantly rotating, as long as the engine is running. The flow of the hydraulic pump is controlled by changing the number of revolutions of the engine.
2. The connection between the hydraulic pump and the Rotadrive is made by means of three flexible tubes of 25, 20 and 14 mm diameter, respectively.
3. The Rotadrive is equipped with an integrated tank or, if preferred without a tank. In that case the seperate hydraulic tank could be installed in any convenient place and position.
4. The Rotadrive is controlled with the help of a touchscreen on which a windrose is projected. By means of the throttle and the good old steering wheel all control directives are transmitted to the Rotadrive and the diesel engine.
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Handle the Biggest Boats with Authority.
Twin applications up to 55 mph for gas engines up to 450 hp
The unique Bravo Two drive has an unmatched ability to maximize lift and thrust for cruisers and houseboats without breaking a sweat. Due to the girth of the gearcase, Bravo Two is capable of accommodating a huge 20-inch diameter prop with deeper gear ratios. This allows the Bravo Two to deliver high thrust around the dock, a quick time to plane and improved fuel economy putting you in control.
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Great Performance Starts with Heart. Bravo!
Single, twin, triple applications over 100 mph for gas engines up to 600 hp
If ever there were a reason to stand up and cheer, the Bravo One best-in-class performance is a great place to start. It can deliver boat speeds beyond the triple-digit mark thanks to its exclusive performance torpedo design and dual water pickups. Its handling at low and high speeds is exceptional. Everything about the Bravo One says high performance with sophistication, demonstrated by its best-in-class shifting. Yet underneath is a set of precision machinery just waiting to unleash spine-tingling torque.
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The Alpha® sterndrive earned the title of “world’s most popular sterndrive” because it delivers reliable performance in a value package. Reliable performance means more family fun year after year without missing a beat. Alpha drives slice through the water with an efficient hydrodynamic profile producing very little drag. And because of the Alpha drive’s many maintenance-free features – you’ll enjoy a worry-free ownership experience.
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The Most Popular Sterndrive in the World.
Single or twin applications up to 65 mph for gas engines up to 300 hp
The Alpha® sterndrive earned the title of “world’s most popular sterndrive” because it delivers reliable performance in a value package. Reliable performance means more family fun year after year without missing a beat. Alpha drives slice through the water with an efficient hydrodynamic profile producing very little drag. And because of the Alpha drive’s many maintenance-free features – you’ll enjoy a worry-free ownership experience.
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Q-SPD is a remarkable surface drive propulsion system! Remarkable because it offers all the performance advantages of surface drive without the traditional disadvantages. Q-SPD surface drives are available for both commercial and pleasure craft using engines from 150hp to 2500hp.
It is in the construction of Q-SPD's surface drives that the secret to their success lays. Using high tech materials and aerospace technology Q-SPD have succeeded in building units which are more than 50% lighter than most of the competition without sacrificing strength, and the composite construction also means no corrosion, low maintenance and maximum reliability.
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SURFACE DRIVE SYSTEM IS A COMPLETE PROPULSION PACKAGE INCLUDING DRIVES, PROPELLERS, HYDRAULICS AND STEERING EQUIPMENT, EMERGENCY SYSTEM, CARDAN SHAFT, COUPLING FLANGE, INDICATORS AND SENSORS.
WITH PERFORMANCE, RELIABILITY, LOW MAINTENANCE COST.
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MTU is one of the world's leading manufacturers of drive and power generation systems for watercraft: MTU engines are used on all the world's oceans and in all marine areas.
Custom-tailored automation systems developed and produced in-house by MTU control and monitor the drive technology.
This ensures that our drive systems are optimally tuned and guarantee flawless operation - so they can guarantee you safety, efficiency, and reliability.
MTU always offers you a complete system tailored individually to your ship and extensive service - all from one source
- Everything from one source
- Safety and optimal drive behavior - completely automatic
- The Scope of Supply
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Trimax surface drives are simple, reliable and extremely efficient because they are fully integrated within a specially designed hull form. ZF Trimax provides drawings and technical assistance to carry out modifications to the stern section of standard standard hull forms.
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MiniRex surface-drives can be used for all types af pleasure craft as well as the most demanding sport boat applications, by choosing the appropriate gear ratio and propeller to match the respective hydrodynamic characteristics of the hull and the performance characteristics of the engine. It can also be easily fitted to any boat transom which could accommodate a typical stern-drive or inboard driveline with shaft angle between 6° - 15°.
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Using our long experience in the design, manufacture and marketing of surface-drives - both articulating and fixed, we decided to develop a new product using state-of-the-art design tools and methods. Our objective was to produce a series of advanced surface-drive systems having increased torque capacities and without the disadvantages of existing designs. The new drive system concept ensures unprecedented reliability and ease of maintenance over the lifetime of the boat, no matter what application - pleasure, commercial or defense.
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Heavy Duty Hydraulics
Stainless Steel Nozzles
Kaplan Propellers
Equals 4100lbs plus thrust, certified
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Heavy Duty Hydraulics
Stainless Steel Nozzle
Kaplan Propeller
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Heavy Duty Hydraulics
Stainless Steel Nozzle
Kaplan Propeller
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Boat drive units
