Stainless Steel Expander Mandrels 749001187 – Precision, Durability & PerformanceStainless Steel Expander Mandrels 749001187
The Stainless Steel Expander Mandrels 749001187 are engineered for professionals who demand uncompromising precision, durability, and corrosion resistance in their expansion tooling. Crafted from premium grade 304/316 stainless steel, these mandrels deliver consistent performance across a wide range of industrial applications—from aerospace component fabrication to heavy‑duty pipe expansion.
Key Benefits
- Superior Corrosion Resistance: 304/316 stainless steel protects against rust, chemicals, and harsh environments.
- High Dimensional Accuracy: Tolerances tighter than ±0.01 mm ensure flawless expansion and repeatable results.
- Extended Service Life: Hardened surface finish reduces wear, extending tool life and lowering total cost of ownership.
- Universal Compatibility: Designed to fit standard expander heads, hydraulic and pneumatic systems, and custom rigs.
- Easy Maintenance: Smooth, non‑porous surface simplifies cleaning and prevents debris buildup.
Technical Specifications
| Specification | Detail |
|---|
| Model Number | 749001187 |
| Material | 304/316 Stainless Steel (AISI) |
| Overall Length | 200 mm (7.87 in) |
| Mandrel Diameter | 50 mm (1.97 in) ±0.01 mm |
| Weight | 1.2 kg (2.65 lb) |
| Surface Finish | Mirror‑polished, passivated |
| Operating Temperature | -30 °C to +250 °C (‑22 °F to 482 °F) |
| Compliance | ISO 9001, ASTM A276 |
Why Choose 749001187?
When precision matters, the Stainless Steel Expander Mandrels 749001187 stand out as the optimal solution. Their robust construction and meticulous engineering reduce downtime, improve surface finish quality, and provide confidence in high‑stress environments. Whether you are expanding tubing for high‑pressure systems or fine‑tuning bore diameters in aerospace components, these mandrels deliver consistent, reliable results.
Typical Applications
- Pipe and tube expansion in oil & gas pipelines
- Aerospace component machining and finishing
- Automotive chassis and frame fabrication
- Marine equipment corrosion‑resistant tooling
- Medical device manufacturing where hygiene and precision are critical
Installation & Use
The mandrel is designed for quick installation with a standard spline or keyway connection. Follow these simple steps for optimal performance:
- Inspect the mandrel for any visible damage before mounting.
- Align the spline/keyway with the expander head and slide the mandrel into place.
- Secure using the recommended torque setting (typically 30–45 Nm).
- Perform a test expansion on a scrap piece to verify alignment and clearance.
- Proceed with production runs, monitoring wear indicators regularly.
Maintenance Tips
To keep the 749001187 mandrels performing at peak efficiency, implement the following maintenance routine:
- After each use, clean with a non‑abrasive solvent and a lint‑free cloth.
- Inspect the surface for scratches or pitting; replace if the finish is compromised.
- Apply a light, food‑grade passivation spray if the tool is stored in humid conditions.
- Store in a dry, temperature‑controlled environment away from direct sunlight.
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For technical support, installation guides, or to request a sample, contact our sales team today.
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