Stainless Steel Large Caliber Turning Mandrels 749002090 – Precision Machining SolutionsStainless Steel Large Caliber Turning Mandrels 749002090
Engineered for demanding machining environments, the Stainless Steel Large Caliber Turning Mandrels 749002090 deliver unmatched rigidity, precision, and durability. Ideal for high‑speed CNC turning, heavy‑duty lathe work, and specialty manufacturing, these mandrels are the go‑to choice for professionals who require consistent performance and long‑lasting reliability.
Key Features & Benefits
- Premium Grade Stainless Steel: Constructed from high‑quality 316L stainless steel, providing superior corrosion resistance and excellent mechanical strength.
- Large Caliber Capacity: Designed to accommodate oversized workpieces, ensuring stable support for diameters up to 250 mm (9.8 in) and lengths up to 500 mm (19.7 in).
- Exceptional Rigidity: Precision‑engineered wall thickness and reinforced geometry minimize deflection, delivering high accuracy even under heavy cutting loads.
- Easy Installation: Integrated indexing key and tapered shank enable quick, repeatable mounting on standard spindle noses.
- Machinist‑Friendly Surface Finish: Polished internal bore and external surface reduce friction and improve chip evacuation.
- Versatile Compatibility: Fits a wide range of CNC turning centers, manual lathes, and rotary tables from major manufacturers.
- Extended Service Life: Heat‑treated for increased hardness and wear resistance, ensuring consistent performance over thousands of cycles.
Technical Specifications
| Part Number: | 749002090 |
| Material: | 316L Stainless Steel (AISI 316L) |
| Maximum Workpiece Diameter: | 250 mm (9.8 in) |
| Maximum Workpiece Length: | 500 mm (19.7 in) |
| Bore Size (Internal): | Ø 30 mm (1.18 in) |
| Overall Length: | 620 mm (24.4 in) |
| Weight: | ≈ 7.8 kg (17.2 lb) |
| Finish: | Polished + Passivation |
| Heat Treatment: | HRC 38‑42 |
| Tolerance: | ±0.01 mm (±0.0004 in) |
Why Choose 749002090 for Your Turning Operations?
When precision matters, the Stainless Steel Large Caliber Turning Mandrels 749002090 provide the stability and repeatability required for high‑quality production runs. Their robust construction reduces vibration, resulting in smoother surface finishes and tighter tolerances. Whether you are machining aerospace components, medical devices, or heavy‑duty automotive parts, these mandrels help you achieve optimal results while extending tool life.
Applications
- Aerospace and defense component machining
- Medical instrument and implant manufacturing
- Automotive crankshaft and camshaft turning
- Heavy‑duty pump and valve body production
- Custom tooling and prototype development
Installation & Maintenance Tips
- Clean the spindle nose and mandrel shank with a lint‑free cloth before mounting.
- Align the indexing key with the spindle keyway and tighten the retaining screw to the recommended torque (typically 15‑20 Nm).
- Periodically inspect the bore for wear or debris; clean with a non‑abrasive solvent and dry thoroughly.
- Apply a light coat of high‑temperature lubricant on the external surface if operating in extreme environments.
- Store the mandrel in a dry, temperature‑controlled area to prevent corrosion.
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