The Forged Extrusion Stem Shaft is a critical load-bearing component in medium-to-large industrial extrusion presses. It is designed to resist high axial compressive loads, cyclic fatigue, and long-term continuous operation under demanding extrusion conditions.
Open-die forging combined with controlled
Heat Treatment ensures dense internal structure and aligned grain flow, providing superior structural reliability compared to cast or bar-stock alternatives.
Typical Applications
- Aluminum extrusion presses
- Copper extrusion presses
- Medium-to-large industrial extrusion equipment
- Non-consumable Structural Components in heavy-duty extrusion lines
Typical Dimensions
| Parameter | Typical Range |
| Shaft Diameter | Ø150 – 350 mm |
| Overall Length | 1,000 – 3,000 mm |
| Single Piece Weight | 0.5 – 4.5 tons |
| Geometry | Straight or stepped shaft, shoulder ends, threaded ends (optional) |
All dimensions are within the optimal overlap between extrusion industry requirements and our medium-to-large forging capacity, intentionally avoiding small-size shaft applications.
Images shown are technical reference renderings only and do not represent final design, dimensions, or specifications.
All components are custom-manufactured based on approved engineering drawings and service conditions
Typical Materials
Commonly supplied materials include:
- 42CrMo4 / AISI 4140 – Balanced strength and toughness, optimized for axial compression and fatigue resistance
- 34CrNiMo6 / AISI 4340 – Higher load capacity and extended service life for demanding shaft applications
- Optional: 40CrNiMoA, 30CrNiMo8
- Open-Die Forging – Ensures continuous axial grain flow for high structural integrity
- Heat Treatment – Quenching and tempering to balance strength and toughness
- Rough Machining (Optional) – Machining reference surfaces, steps, and ends
- Finish Machining (Optional) – Dimensional accuracy, concentricity, and straightness up to 0.01 mm
Mechanical & Functional Characteristics
- High axial compressive strength and fatigue resistance
- Stable performance under long-term press operation
- Engineered for service reliability rather than short-term peak values
Inspection & Quality Control
All Forged Extrusion Stem Shafts undergo comprehensive quality assurance to ensure structural reliability and long-term service performance. The chemical composition of each shaft is verified using a spectrometer, and mechanical properties such as tensile strength (with optional impact testing) are carefully assessed. Ultrasonic testing (UT / PAUT) confirms internal soundness, while dimensional inspections using both CMM and conventional gauges ensure precise tolerances. Each shaft is fully traceable through its unique heat number from raw material to finished component. For more details on our traceability system, please visit our
Product Identification and Traceability page.
Illustrations are for reference purposes. Final geometry and specifications are defined by customer-approved engineering requirements.
Related Forged Products
- Forged Container Base / Ring Support
- Forged Dummy Block Base / Support Block
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