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Customizable
JinYe Propeller
The propeller hub serves as the central structural component connecting the propulsion shaft to propeller blades, transferring rotational torque while maintaining precise alignment under continuous marine operating conditions. This component accommodates both Fixed Pitch Propeller (FPP) and Controllable Pitch Propeller (CPP) configurations, with internal geometries engineered to support blade mounting surfaces and hydraulic actuation mechanisms where required.
Manufactured from Ni-Al Bronze Cu3 and Cu4 alloys, these hubs contain specified percentages of nickel, aluminum, iron, and manganese within the copper matrix. These alloy compositions deliver measured tensile strength ranging from 580-750 MPa, with yield strength values of 250-400 MPa. The material exhibits resistance to seawater corrosion and cavitation erosion, properties relevant to continuous immersion in saltwater environments and rotational speeds typical of marine propulsion systems. The alloy maintains dimensional stability across temperature variations from -10°C to 120°C encountered during vessel operations.
The manufacturing sequence includes initial casting or forging of alloy billets, followed by rough machining, stress relieving heat treatment, and final precision finishing. Internal bore surfaces undergo honing to achieve Ra 0.8 μm surface finish, while flange mounting faces achieve Ra 1.6 μm finish. Threaded holes for blade and shaft fasteners receive rolled thread processing for improved fatigue resistance. Each production batch maintains material traceability through heat number identification and alloy composition test reports.
Every completed propeller hub undergoes non-destructive testing according to classification society requirements. Inspection procedures include dye penetrant testing for surface discontinuities, ultrasonic testing for internal material integrity, and dimensional verification using coordinate measuring machines. Test reports accompany each delivered component, documenting compliance with specified acceptance criteria.
Parameter | Available Options |
Weight | Custom dimensions per specification |
Diameter | Custom dimensions per specification |
Classification Society | DNV, ABS, RS, RINA, BV, KR, BKI, CCS, Other upon request |
Materials | Ni-Al Bronze (Cu3), Ni-Al Bronze (Cu4), Alternative materials upon request |
Rotation Direction | Left-hand rotation, Right-hand rotation |
Number of blades | 1, 2, 3, 4, 5, Custom configurations |
Propeller Type Compatibility | Fixed Pitch Propeller (FPP), Controllable Pitch Propeller (CPP) |
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These propeller hubs install on commercial vessels including tugboats, fishing vessels, workboats, cargo ships, and passenger ferries. The design accommodates shaft diameters ranging from 50 mm to 500 mm, with blade quantities configured to match vessel propulsion requirements.
For Fixed Pitch Propeller systems, the hub features precision-machined blade root seats secured by mechanical fasteners, creating a permanent blade angle arrangement. For Controllable Pitch Propeller systems, the internal cavity accommodates hydraulic piston assemblies and crank mechanisms that rotate individual blades through specified pitch angles. Both configurations maintain concentricity between shaft axis and blade rotational planes, minimizing vibration during operation.
The hub design incorporates sealing surfaces for O-ring and lip seal installation, preventing seawater ingress to internal components and maintaining lubricant integrity within the hub cavity. Mounting flanges include standardized bolt circle patterns compatible with industry-standard shaft coupling dimensions.
Production facilities maintain approval from DNV, ABS, RS, RINA, BV, KR, BKI, and CCS classification societies. Each component receives material and workmanship certification according to the specific society's rules, with surveyor attendance available during manufacturing and testing stages upon client request.
Standard production lead time measures 4-6 weeks from drawing approval and material confirmation. Expedited production schedules of 2-3 weeks are available for priority commercial operations requirements, subject to material stock availability and production capacity allocation.
Ni-Al Bronze Cu3 and Cu4 alloys demonstrate corrosion rates of less than 0.02 mm per year in natural seawater immersion testing. The material forms a protective oxide layer when exposed to saltwater, reducing corrosion progression compared to alternative copper alloys. This corrosion resistance extends service intervals between dry-dock inspections.
Full customization applies to all dimensions including outer diameter, bore size, flange thickness, blade seat angles, and mounting hole patterns. Production follows client-provided 2D drawings or 3D models, with engineering review conducted to verify structural adequacy for specified vessel power and operating conditions.
