Stainless Steel Large Caliber Expander Mandrels – Model 749002086Stainless Steel Large Caliber Expander Mandrels – Model 749002086
When precision, durability, and performance matter, the Stainless Steel Large Caliber Expander Mandrels (Model 749002086) deliver unmatched results. Engineered for heavy‑duty expansion tasks across a variety of sectors—including aerospace, automotive, oil & gas, and high‑pressure fluid systems—these mandrels combine advanced metallurgy with meticulous engineering to provide reliable, repeatable expansion every time.
Key Benefits & Features
- Premium Stainless Steel Construction: Made from 304/316 grade stainless steel for superior corrosion resistance and strength in aggressive environments.
- Large Caliber Capability: Designed specifically for high‑diameter applications, ensuring uniform expansion without deformation.
- Precision‑Engineered Geometry: CNC‑machined tolerances guarantee tight dimensional control, reducing cycle time and minimizing rework.
- High Tensile Strength: With a yield strength exceeding 450 MPa, the mandrel maintains its shape under extreme load conditions.
- Easy Integration: Compatible with standard hydraulic, pneumatic, and manual expansion rigs for seamless workflow integration.
- Low Maintenance: The stainless steel surface resists scaling and pitting, extending service intervals and reducing total cost of ownership.
Technical Specifications
| Specification | Detail |
|---|
| Model Number | 749002086 |
| Material | 304/316 Stainless Steel (AISI) |
| Diameter Range | 150 mm – 300 mm (custom sizes available) |
| Length | 200 mm (standard); optional lengths on request |
| Surface Finish | Ra 0.8 µm (polished) – Ra 1.6 µm (machined) |
| Hardness (Rockwell) | HRB 95–105 |
| Operating Temperature | -40 °C to +250 °C |
| Maximum Expansion Force | Up to 120 kN |
| Compliance Standards | ISO 9001, ASTM A240, EN 10204 |
Why Choose This Expander Mandrel?
In demanding production lines, the margin for error is thin. The Stainless Steel Large Caliber Expander Mandrels 749002086 are built to:
- Maintain exact bore geometry, ensuring downstream component fit and function.
- Resist corrosion from chemicals, saltwater, and high‑temperature steam.
- Deliver consistent performance across thousands of cycles, reducing downtime.
- Support a wide range of expansion ratios, making them versatile for multiple part families.
Applications
These mandrels are ideal for:
- Expansion of large‑diameter tubing in oil & gas pipelines.
- Press fitting of aerospace structural components.
- Hydraulic cylinder bore enlargement.
- Automotive chassis reinforcement.
- Manufacturing of high‑pressure vessels and heat exchangers.
Installation & Maintenance Tips
- Pre‑Inspection: Verify mandrel dimensions against drawing specifications before installation.
- Lubrication: Use compatible, high‑temperature lubricants to reduce friction during expansion.
- Alignment: Ensure the mandrel is centered in the expansion tool to achieve uniform radial force.
- Cleaning: After each use, wipe the surface with a non‑abrasive cleaner to prevent residue buildup.
- Storage: Store in a dry, climate‑controlled environment to maintain corrosion resistance.
Ordering Information
To guarantee you receive the correct product, reference the exact model number 749002086 when placing your order. Custom diameters, lengths, and surface finishes are available upon request to meet unique project requirements.
Ready to enhance your expansion processes? Contact our technical sales team today for a detailed quote and engineering support.
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