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42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems
42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems
42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems
42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems
42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems
42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems
42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems
42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems
42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems
42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems
42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems
42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems
Specifications
Brand Name :
Tian Gong
Certification :
ISO9001, ISO14001,ISO45001
Place of Origin :
Changzhou, China
MOQ :
1
Price :
USD500-USD1000/piece
Payment Terms :
T/T
Supply Ability :
56000 Tons per year
Delivery Time :
30days
Packaging Details :
Pallet
Surface Treatment :
Heat Treatment，Removal of oxide scale
Size :
Customized according to customer requirements
Material :
Alloy Steel or Customized
Weight :
100 KG-7 TON
Type :
Free Forging
Application :
Machinery, Automotive, Mining, Construction
Processing Method :
42CrMo4 or Customized
Packing :
Pallet or Customized
Description

42CrMo4 High-Strength Marine Propeller Shaft Free Forging for Ship Drive Systems. The 42CrMo4 High-Strength Marine Propeller Shaft Free Forging is a large open-die forged shaft designed for marine propulsion systems in commercial vessels and offshore ships. It transmits torque from the engine to the propeller, ensuring reliable performance under continuous torsional load and harsh seawater exposure.


Manufactured from 42CrMo4 alloy steel, this forging offers excellent tensile strength, fatigue resistance, and impact toughness, while maintaining dimensional stability during long-term operation. The forging process ensures directional grain flow along the shaft axis, enhancing mechanical integrity under bending and torque stress.

Key Features

  • Forged from premium alloy or stainless steels such as 42CrMo4

  • Customizable dimensions, with solid or hollow shafts, keyways, taper ends, or flanges

  • Ultrasonic tested, machined, and optionally surface-coated for marine use

Available Types include:

  • Solid marine propeller shafts for heavy-duty propulsion systems

  • Hollow propeller shafts for optimized weight and dynamic balance

  • Stern tube shafts with machined bearing surfaces

  • Intermediate drive shafts with customized coupling ends and flanges

Item Details
Product Name 42CrMo4 High-Strength Marine Propeller Shaft Free Forging for Ship Drive Systems
Material Grades - Marine-grade alloy steels: 42CrMo4
Forging Equipment - Hydraulic hammers: 5T / 8T / 12T - 3600T open-die forging press for long-axis and large-diameter shaft forging - Supports integrated forging of stepped and flanged shaft sections
Manufacturing Process Hot Forging → Normalizing / Quenching + Tempering → Ultrasonic Testing → Rough / Semi-Finish Machining → Dimensional & Surface Inspection
Forging Ratio ≥ 3.0 — Enhances grain orientation along shaft axis, improving fatigue performance and structural integrity under bending and torsional vibration
Applications - Main propeller shafts for cargo ships, ferries, tugboats, and naval vessels - Intermediate drive shafts for marine transmission systems - Stern shafts operating in seawater or lubricated bearing systems
Heat Treatment Options - Quenched + Tempered for strength and ductility in 42CrMo4 - Solution annealed + aged for stainless materials
Testing & Inspection - Chemical: Spectrometer verification of alloy composition - Mechanical: Hardness, tensile, yield, impact testing (transverse & axial) - Ultrasonic (UT): Full-length, multi-angle flaw detection - Dimensional: Journal roundness, straightness, concentricity, length, and runout control
Value-Added Services - Pre-machining: taper ends, flanges, journals, keyways, sealing interfaces - End protection caps, steel banding, seaworthy packaging - Full material traceability: heat number, forging batch, inspection certificate


42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems

42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems

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42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems

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Product Detail
Brand Name :
Tian Gong
Certification :
ISO9001, ISO14001,ISO45001
Place of Origin :
Changzhou, China
MOQ :
1
Price :
USD500-USD1000/piece
Payment Terms :
T/T
Contact Supplier
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42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems
42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems
42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems
42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems
42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems
42CrMo4 Free Forging High Strength Marine Propeller Shaft For Ship Drive Systems

Changzhou Tiangong Forging Co., Ltd.

Verified Supplier
1 Years
jiangsu, changzhou
Since 1994
Business Type :
Manufacturer, Exporter, Seller
Main Products :
Forged Gear, Forged Shaft, Crane Wheel
Total Annual :
27.5 million -28 million
Employee Number :
135~150
Certification Level :
Verified Supplier
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