Marine Propeller

Your Professional Marine Propeller Supplier

Chongqing New Maritime Import & Export Co., Ltd. was established in 2018 and specializes as a professional manufacturer of ship parts. Our product range includes various marine outfitting equipment, life-saving products, propulsion systems, anchors and anchor chains, cables and wire ropes, floating dock systems, fenders, mooring equipment, and other related marine supplies.

Rich Experience

With over 24 years of extensive experience in both production and trade, the company has developed deep expertise in the marine industry.

Fast Delivery

The company operates three advanced production lines capable of handling large-scale orders while ensuring timely delivery.

Quality Control

The company is equipped with state-of-the-art testing facilities and adheres to a rigorous quality control system to ensure the highest standards of product quality.

Sales Market

Our products have gained widespread recognition globally and are currently exported to numerous countries, including Canada, the USA, Korea, Germany, India, Dubai, and many others.

Parameters

Parameter	Details
Certification	ISO 9001:2000, multiple major classification societies like CCS, BV, LR, etc.
Turning Direction	Left and Right
Diameter	0.5m - 10m (customizable)
Type	Fixed Pitch or Controllable Pitch
Usage	For all kinds of ships
Specification	Custom - made
Trademark	New Maritime
Origin	China
HS Code	8487100000
Production Capacity	500,000 units/year
Material	Bronze (CU1 - CU4) or stainless steel

Types of Marine Propeller

The marine propellers produced by our company mainly include the following types:

Copper Alloy Propeller

Our bronze ship propeller is a top - notch marine propulsion product. Crafted from high - quality bronze with advanced technology, it offers reliable and efficient propulsion for various ships. Whether it's a large ocean - going freighter, a small coastal fishing boat, or a luxurious yacht, our propeller is designed to meet different needs.

Stainless Steel Propeller

Our stainless steel propeller for boat come in various sizes and designs, depending on the type and size of the vessel. They can have different numbers of blades, ranging from three to five or more. The shape and pitch of the blades also vary, depending on the specific requirements of the ship, such as speed, maneuverability, and efficiency.

Applications of Marine Propeller

● High-speed boat: Such as speedboat, racing boat, etc. , need higher thrust and higher speed, five-blade propeller can provide better acceleration performance.
● Large ships: Such as merchant ships, passenger ships, etc. , may need more thrust to propel the ship, five-blade propeller can increase thrust and improve efficiency.
● Special-purpose ships: Five-blade propellers can meet the requirements for maneuverability, stability or special working conditions of ships.
● Engineering ships: Such as platform supply vessel, need to adapt to different operating conditions and load conditions, five-blade propeller can provide better adaptability.

Marine Propeller Installation Method

Ship high-speed, energy-saving, bidirectional force propeller placement method

“High speed energy saving bidirectional force propeller placement method” is a different placement scheme proposed on the basis of the existing propeller technical structure. Because the existing method of oar placement can only make the oar produce unidirectional force and single function, which makes the oar play less than half of its due effect, waste more than half of the energy and make the ship speed too low; The invention can make the oar produce bidirectional multifunctional force, give full play to the potential of the oar, and greatly improve the speed and energy saving.

Large ship propeller vertical pre-installation device

Large ship propeller vertical pre-installed devices, including base, spreader, described the base composed of panel, plate, plate, pipe and board composition, adjusting panel layout with the propeller when propeller pre-installed tighten bolt hole at the base, supporting tube and vertical plate are at least four match, respectively arranged between the panel and the plate, The upper end and lower end of the supporting tube are respectively fixedly connected with the panel and the seat plate, one side of the vertical plate is fixedly connected with the supporting tube, the upper end and lower end of the vertical plate are respectively fixedly connected with the panel and the seat plate, and a plurality of adjusting plates are arranged on the seat plate, each adjusting plate is installed on the adjustment screw adjustment base level.

Marine Propeller Control Method or System

01/

Propeller turning device
Propeller turning device, including upper bracket, lower bracket, intermediate shaft and nut. The bottom of the intermediate shaft is fixedly connected with the lower bracket, the upper part of the intermediate shaft is made into a wedge shape and is provided with a thread on the round surface, the thread is matched with the nut, and the top and bottom ends of the intermediate shaft are respectively provided with an upper lifting lug and a lower.

02/

Control method and control system of controllable pitch marine propeller
A method of controlling the pitch of a controllable-pitch marine propeller of a watercraft having an engine, comprising the steps of: providing a power stop mode to rapidly reduce the speed of the boat as the watercraft advances; and adjusting the propeller pitch to a fully reversed position while engine power is at Available throughout the transition of the vessel from forward motion to the vessel’s reduced forward speed.

03/

A propeller lifting and reversing device
A propeller lifting and reversing device, the propeller is connected with the lower end of a lifting rod, the lifting rod is arranged in a rotating sleeve, and the setting method of the lifting rod and the rotating sleeve is as follows: the lifting rod can move up and down in the rotating sleeve, and the lifting rod is connected with the rotating sleeve.

04/

Control method and control system of controllable pitch marine propeller
A method of controlling the pitch of a controllable-pitch marine propeller of a vessel including an engine, comprising: providing an indication of a vessel’s speed; using the vessel’s speed to control engine power according to any one or more parameters selected from the group consisting of: the propeller: Pitch and mode of operation of the vessel.

Order Process

Contact our sales team, telling us product details like what you need, quantities, and specifications. We'll offer an accurate quote.

Once you confirm the quote and order details, we'll send an order contract. Sign it and pay the deposit as per the contract.

After getting the deposit, we start production. We'll keep you updated on progress.

When the products are made and pass inspection, we'll ask you to pay the balance.

After receiving full payment, we'll ship as per your chosen transport mode and provide logistics tracking info.

Packaging and Shipping

Packaging	Wooden case
Shipping	We work with professional logistics partners to choose the best shipping option, whether it's by sea, land, or air. For international orders, we handle all the export paperwork.

Our Factory

Chongqing New Maritime Import&Export Co., Ltd. was established in 2018, which is a professional ship parts manufacturer. New Maritime has won mature production line and and also well experienced foreign trade branch-company with head office located in the developed city of Chongqing.

Our Certifications

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FAQ

Q: What is a marine propeller?

A: A marine propeller is a rotating device that converts the rotational energy of an engine into a thrust force, enabling a vessel to move through water. It consists of blades attached to a central hub and is a crucial component for the propulsion of ships, boats, and other water - borne vessels.

Q: How does a marine propeller work?

A: As the propeller rotates, the shape of its blades creates a pressure difference. The leading edge of the blade pushes water backward, and according to Newton's third law of motion, the water exerts an equal and opposite force on the propeller, which in turn pushes the vessel forward. The pitch of the blades, which is the distance the propeller would move forward in one complete rotation if it were moving through a solid medium, determines the amount of thrust generated.

Q: How do you select the right marine propeller for a vessel?

A: Vessel size and type: Larger vessels generally require larger and more powerful propellers.
Engine power: The propeller should be matched to the power output of the engine.
Operating conditions: Consider factors such as the water depth, current, and the type of water (saltwater or freshwater).
Maneuverability requirements: If the vessel needs to be highly maneuverable, a variable - pitch or controllable - pitch propeller may be a better choice.

Q: What is the pitch of a marine propeller?

A: The pitch of a marine propeller is the theoretical distance the propeller would move forward in one complete rotation if it were moving through a solid medium. It is an important parameter as it determines the amount of thrust generated. A higher - pitch propeller will move the vessel forward a greater distance per rotation, but it may require more power from the engine to turn.

Q: Can a marine propeller be repaired if damaged?

A: Minor damage, such as small dents or chips on the blades, can often be repaired. For bronze propellers, the damaged area can be filled and smoothed using specialized bronze - welding techniques. Stainless - steel propellers can also be repaired through welding or machining. However, if the damage is extensive, such as a broken blade or severe corrosion that has compromised the structural integrity of the propeller, replacement may be necessary.

Q: How does cavitation affect a marine propeller?

A: Cavitation can cause pitting and erosion on the surface of the propeller blades. The collapsing vapor bubbles create high - pressure shockwaves that gradually wear away the material of the blades. This reduces the efficiency of the propeller as the damaged blades are no longer able to generate thrust as effectively. It also increases noise and vibration, which can be a nuisance and may cause damage to other parts of the vessel.

As one of the leading marine propeller manufacturers and suppliers in China, we warmly welcome you to buy cheap marine propeller in stock here from our factory. All customized products are with high quality and competitive price. mooring systems for ships, Aluminum Soundproof Window, sit on top kayak