Propeller Shaft
Product Definition & Applications
The Propeller Shaft (alternatively termed Screw Shaft, Stern Shaft, or Tail Shaft) serves as the critical linkage between a vessel’s propulsion system and its propeller. Our heavy-duty forged shafts connect:
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Flanged End: Couples with the intermediate shaft
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Tapered End: Secures the ship’s propeller
Manufacturing Capabilities
1. Technical Parameters
| Attribute | Specification Range |
|---|---|
| Length | 3,000–20,000 mm |
| Weight | 8,000–80,000 kg |
| Design Types | Flanged / Stepped / Tapered / Pull Rod |
| Material Grades | Carbon Steel & Low-Alloy Steel |
2. Quality Assurance
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Full Process Control:
✔ Steel melting composition analysis
✔ Precision forging under hydraulic press
✔ Quenching & tempering heat treatment
✔ Non-Destructive Examination (NDE):-
Ultrasonic Testing (UT)
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Magnetic Particle Inspection (MPI)
✔ Mechanical property validation (tensile, impact, hardness)
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Certifications & Compliance
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Classification Society Approvals:
LR | DNV | ABS | GL | BV | KR | NK | RINA | CCS -
Testing Standards:
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IACS UR W7/W8 (Shaft Forgings)
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ASTM A668 / EN 10293 (Material)
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Material List for the stainless steel stern shaft, propeller shaft:
| Chemical Component (%) | ||||||
| C | Si | Mn | P | S | Cr | Ni |
| ≤0.07 | ≤1.00 | ≤2.00 | ≤0.35 | ≤0.30 | 17.00-19.00 | 8.00-11.00 |
| Mechanical Properties | |||||
| Tensile Test | Hardness Test | ||||
| o b (MPa) | o s (MPa) | o 5(%) | HB | HRB | HV |
| ≥520 | ≥205 | ≥40 | ≤187 | ≤90 | ≤200 |
| Yeld Value Strength at High Temperature | ||||||||||
| Nominal Thickness (mm) | During the following temperature (°C), o 0.2 (MP) should be not less than | |||||||||
| 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 550 | |
| 2-60 | 171 | 155 | 144 | 135 | 127 | 123 | 119 | 114 | 111 | 106 |
| Allowable Stress of Steel Forgings | |||||||||||
| Nominal Thickness (mm) | During the following temperture (°C), the allowable stress should be (MPa) | ||||||||||
| ≤20 | 100 | 150 | 200 | 300 | 400 | 500 | 550 | 600 | 650 | 700 | |
| 2-60 | 137 | 137 | 137 | 130 | 114 | 107 | 100 | 91 | 64 | 42 | 27 |
| 137 | 114 | 103 | 96 | 85 | 79 | 74 | 71 | 62 | 42 | 27 | |
The description/sizes may be different with goods, please check with us when order.
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