English 
T: +86-156-0511-1716
E: hp018@hpcbkj.com
E: hp018@hpcbkj.com
In Fangong Industrial Park, Dongtai Town, Dongtai City
As a professional stern shaft manufacturer, we specialize in custom-designed stern shafts for global marine markets. Our products comply with IMO, ABS, CCS, and DNV standards, with full-process quality control to ensure reliability in extreme environments (polar seas, tropical waters). We serve shipyards, marine maintenance firms, and naval projects worldwide.
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Global Certification: ABS, CCS, DNV, and LR approval for international ship compliance.
Material Traceability: Each shaft has a unique batch number for full raw material/heat treatment tracking.
Efficient Production: In-house forging reduces lead time; large-scale manufacturing ensures stable supply.
R&D Capability: Ongoing development of composite materials for lightweight, high-corrosion solutions.
Model (Mfr. Code) | Material Standard | Manufacturing Process | Precision Grade | Surface Roughness (Ra, μm) | Heat Treatment Status | Applicable Classification Society |
SS-M45 | GB/T 699-2015 | Free Forging | IT7 | 3.2 | Quenched & Tempered (HB220–250) | CCS, BV |
SS-M40Cr | GB/T 3077-2015 | Die Forging | IT6 | 1.6 | Quenched & Tempered (HB240–280) | ABS, DNV |
SS-M316L | ASTM A480/A480M-22 | Free Forging | IT5 | 0.8 | Solution Annealing (HB180–220) | ABS, LR, DNV |
SS-MComposite | ISO 1043-1:2008 | Mold Pressing | IT6 | 1.6 | Fiber Reinforcement | DNV, ABS |
CNC Precision Machining: 5-axis CNC lathes/grinders ensure dimensional tolerance (±0.02mm) and journal concentricity (≤0.03mm).
Fillet Optimization: Tapered transitions and rounded fillets reduce stress concentration, preventing fatigue cracks.
Eco-Friendly Treatments: Passivation (stainless steel) and phosphating (carbon steel) avoid harmful coatings.
Luxury Cruise Ships: SS-M316L shafts offer low vibration and corrosion resistance for passenger comfort.
Container Ships: SS-M40Cr shafts resist high torque and fatigue, reducing maintenance for long-haul routes.
Polar Scientific Vessels: SS-MComposite shafts (lightweight, low-temperature resistant) handle ice impacts.
Naval Auxiliaries: SS-M45 shafts (CCS-certified) meet military durability requirements at a competitive cost.
Our production process integrates advanced technology:
Raw Material Sourcing: Certified steel ingots from Baosteel/POSCO with complete material certificates.
Forging: In-house free/die forging to improve material strength.
Heat Treatment: Computer-controlled quenching/tempering to ensure uniform mechanical properties.
Precision Machining: CNC turning/grinding for keyways, tapers, and journals.
NDT Testing: UT (internal defects), MT (surface cracks), and CMM (dimensional inspection).
Finishing: Marine-grade painting or anti-biofouling coatings for offshore use.
Our shafts are compatible with MAN, Wärtsilä, and Caterpillar propulsion systems, supporting standard stern tube bearings (white metal, PTFE) and seals. Detailed installation drawings and dimensional reports simplify integration with existing ship systems.
Design Collaboration: R&D team works with customers to optimize shaft design (e.g., hollow shafts for weight reduction).
Prototyping: Small-batch samples for testing before mass production.
Special Standards: Compliance with customer-specific requirements (e.g., military-grade coatings).
Certification Delivery: Full classification society documents (ABS, CCS) with each shaft.
Lead Time: In-stock models (7-day delivery); custom models (30–45 days).
Global Support: Overseas service centers (Europe, Asia, Americas) provide on-site help within 72 hours.
R&D Partnerships: Collaborate with shipyards to develop composite and high-alloy stern shafts.
