Features of 920mm 4blades nickel aluminum bronze fixed pitch propeller
| Product name |
920mm 4blades nickel aluminum bronze fixed pitch propeller |
| Diameter |
920mm |
| Blade |
4 |
| Material |
CU3/nickel aluminum bronze |
| Certificate |
ABS,CCS,BV,KR,LR,NK and etc... |
Our Bronze FPP Propeller come in various sizes and designs, depending on the type and size of the vessel. They can have different numbers of blades, ranging from two 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.
The fixed-pitch marine boat propeller has the following characteristics:
Simple structure: The structure of the constant-speed boat propeller is relatively simple, lightweight, low in cost, and easy to maintain.
Widely applied: Due to its simple structure and low cost, the constant-distance boat propeller is widely used in small-power, light and ultra-light aircraft.
Performance limitations: The main drawback of fixed-pitch boat propellers is that they cannot maintain optimal performance under various operating conditions. Once the boat propeller is installed on the engine crankshaft, the pilot cannot change the blade angle. Therefore, the maximum efficiency of the boat propeller can only be achieved at a specific forward ratio, and the efficiency at other speeds will be lower than the maximum value.
The advantages of marine fixed-pitch boat propellers:
Simple structure, light weight, low cost, and easy maintenance.
Manufacturing materials and processes of marine fixed-pitch propellers:
Marine fixed-pitch propellers can be produced for ships with a length of less than 8 meters and a finished weight of about 35 tons. Common materials include first-grade manganese bronze (Cu1), second-grade nickel-manganese bronze (Cu2), third-grade nickel-aluminum bronze (Cu3), and fourth-grade manganese-aluminum bronze (Cu4).
Marine boat propeller Material selection:
Cu1(Manganese Bronze) and Cu3(Nickel Aluminum Bronze) are two commonly used copper alloy materials in the manufacture of marine propeller.
Cu1:Suitable for inland rivers, low cost , durable enough for freshwater environment
Cu3:Stronger strength and corrosion resistance, high corrosion resistance to seawater immersion
There are two ways to obtain the quotation of marine fixed-pitch boat propeller:
1. Provide detailed marine boat propeller drawings for manufacturing;
2. Supply the following data for marine boat propeller design and manufacturing:
1 ,vessel type
2, length of vessel
3, width of vessel
4, depth of vessel
5, Displacement of vessel
6, quantity of engine. power of engine. speed of engine
7, gear ratio
8, shaft diameter
9,sailing speed of vessel.
Comparison of different blade numbers of fixed pitch propeller
| Blade number |
Advantages |
Disadvantages |
| 3 |
High speed efficiency, lightweight, low cost |
Large vibration and insufficient thrust at low speed |
| 4 |
Balanced efficiency and vibration, high overall cost performance |
Harmonic noise is likely to be generated at medium speed |
| 5 |
Low vibration, high thrust, good quietness |
High cost and increased weight |
| 6 |
Low cavitation noise, ultra-smooth operation |
Slightly reduced efficiency and complex structure |
Critical Performance Phenomena
Cavitation:
Cause: When water pressure on the blade surface drops below its vapor pressure, forming vapor bubbles.
Effects: A sharp drop in efficiency, severe erosion of the blade material, and increased noise and vibration.
Solutions: Optimized blade design, more blades, ducted propellers, and cavitation-resistant materials (e.g., stainless steel).
Vibration & Noise:
The propeller is a primary source of onboard vibration and underwater radiated noise, critical for passenger comfort and naval stealth.
Application Areas
Merchant Shipping:
Container Ships/Tankers: Giant fixed-pitch propellers, optimized for fuel efficiency at a single cruising speed.
Cruise Ships: Increasingly use podded propulsors for quiet operation, maneuverability in tight ports, and passenger comfort.
Tugs/Workboats: Almost exclusively use ducted or CPP propellers for maximum thrust and control.
Naval Vessels:
Submarines: Use highly skewed, multi-bladed propellers (or pump-jets) designed for one primary goal: silence.
Surface Combatants: Use high-strength materials, balancing speed, and acoustic signature reduction.
Small Craft/Yachts: Focus on high-speed performance and lightweight materials.
Through our unremitted efforts and pursuing,obtained the factory approval of such nine major classification societies as China Classification Society CCS,American Bureau of Shipping ABS,Bureau Veritas BV,the Korean Register of Shipping KR and Italian Classification Society RINA and has been granted their certificates accordingly and has passed ISO9001 system certificate.
Product equipment of 920mm 4blades nickel aluminum bronze fixed pitch propeller
Large oil tanker propeller
Diameter:5.3m
Weight:11T
Material:Ni-Al Bronze(Cu3)
Large container propeller
Diameter:5.6m
Weight:15T
Material:Ni-Al Bronze(Cu3)
Large bulk propeller
Diameter:6.2m
Weight:18T
Material:Ni-Al Bronze(Cu3)
Large-scale projects propeller
Diameter:2.8m
Weight:2.6T
Material:Ni-Al Bronze(Cu3)
High speed propeller
and etc...
Packaging of propulsion system of 1800mm nickel aluminum bronze left handed propeller
Usually, we use wooden boxs.
With years of experience, we are sure that our package is seaworthy very well.
We have been engaged in the export of Marine supplies for 15 years and have rich experience in marine products quality and after-sale.
Our products and service covers marine life-saving &fire-fighting products, marine propulsion system, marine pollution prevention equipment, marine anchor &anchor chain, marine cable &wire rope, ship communication system, marine fender &air bag, marine cooking equipment, marine pump, marine light, marine mooring equipment, marine deck equipments, marine outfitting and ...etc. All of products have been approved qualification society and government administration, and have got the certificate such as ABS, BV, CCS, DNV, GL, LR, KR, . Etc.
We focus on supplying the products of good quality and competitive price based on mutual benefit for our customer all the time. The perfect sale service is our goal.
Hope to build win-win business with you.
1)Q:What's your MOQ?
A: We accept 1 set trail order;Our production capacity could meet your large quantity orders;
2)Q:How about the Delivery time?
A:Around 60 days after order confirmation.
3) Q:What is your terms of payment?
A: T/T 40% as deposit, and 60% before delivery. We'll show you the photos of 920mm 4blades nickel aluminum bronze fixed pitch propeller before you pay the balance.
4) Q:What is your terms of delivery?
A: EXW, FOB, CFR, CIF.
5) Q:Do you test all your goods before delivery?
A: Yes, we have 100% test our 920mm 4blades nickel aluminum bronze fixed pitch propeller before delivery.
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