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Hollow Main Shaft Forging
Hollow Main Shaft Forging
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Product Overview
This product is typically used in heavy rotating systems where the shaft functions as a main spindle or principal transmission member. The hollow design helps reduce mass and may support lubrication, internal passage, or assembly requirements. Compared with a standard hollow shaft, a hollow main shaft places more emphasis on concentricity potential, straightness control, and stable material behavior in subsequent machining and heat treatment. For special shaft projects, purchasing decisions are usually driven by operating load, machining sequence, straightness control, and the need for adequate stock in journals, tapers, or connection zones. These forgings are therefore produced with attention to section transition, heat-treatment compatibility, and dimensional allowance so that the customer can complete the final shaft geometry with reduced structural risk. Additional rough machining, ultrasonic testing, mechanical-property verification, and marking can also be provided for projects with stricter equipment or inspection requirements.
Detailed Parameters
| Key Features | Main-shaft grade concentricity, L/D ratio stability, thermal straightening capability | Typical Materials | 42CrMo4, 34CrNiMo6, 17CrNiMo6, per drawing |
|---|---|---|---|
| OD Range | 300mm ~ 1200mm | Max Length | ≤ 8000mm |
| Unit Weight | Up to 60 tons | Typical Applications | Turbine main shafts, motor main shafts, large fan main shafts, paper mill roll shafts |
| Supply Condition | Quenched & Tempered / Rough Machined | Machining Scope | ID/OD/Faces and Journals |
| Inspection Standards | UT 100% Full Volume, EN 10204 3.1 | Documentation | Concentricity/Straightness report, Mechanical properties |
Key Advantages
Product Gallery
Management Platforms
Material Sourcing
Rigorous selection of premium alloy steels (CrMo, CrNiMo) to ensure raw material purity.
Forging Precision
Advanced forging presses ensuring uniform deformation and stable L/D ratios.
Quality Monitoring
Real-time tracking of heat treatment cycles to prevent material degradation.
NDT Testing
100% ultrasonic volume testing to detect internal defects and ensure safety.
Dimension Control
Precision rough machining of journals and faces to reduce customer machining time.
Logistics Safety
Specialized heavy-load packaging for shafts up to 60 tons to prevent transport deformation.
Investment Return Comparison
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