Product Parameters
| Item | Specification |
|---|---|
| Outer Diameter | 10 mm – 200 mm |
| Wall Thickness | 1 mm – 20 mm |
| Max Speed | Up to 10,000 RPM |
| Balancing | G2.5 or better |
| Material | Aluminum 6061-T6, 4130 Alloy, Titanium Grade 2 |
| MOQ | 10 pcs |
description
High-speed packaging machinery, aerospace rotary joints, and medical imaging equipment often specify hollow tube shafts - they provide the stiffness needed for precise motion while keeping rotational inertia down. The open center allows cables or fluid lines to pass through, which is difficult to arrange with a solid shaft. Aluminum 6061-T6 works well in non-corrosive environments where weight matters. 4130 alloy handles higher loads without a major weight penalty. Titanium Grade 2 is reserved for applications where both corrosion resistance and minimum mass are critical - aerospace-grade. Wall thickness is held to ±0.05 mm through precision boring, so flexural rigidity stays consistent across production runs. Dynamic balancing to G2.5 maintains smooth operation up to 10,000 RPM.
Why a Thin-Wall Shaft Can Buckle Under Compression
A hollow shaft with thin walls has lower buckling resistance than a solid shaft of the same outer diameter. The Euler buckling formula shows this clearly - for a given length and outer diameter, the critical load drops as wall thickness decreases. Hollow tube shafts are excellent for high-speed rotary applications where minimizing inertia is the priority. They are poor choices for high-thrust applications.
FAQ
Q1: MOQ?
A1: 10 pieces.
Q2: Materials?
A2: Aluminum 6061-T6, 4130 alloy, Titanium Grade 2.
Q3: Speed capability?
A3: Up to 10,000 RPM with G2.5 balancing.
Q4: Wall thickness tolerance?
A4: ±0.05 mm standard.
Q5: End configurations?
A5: Custom flanges, coupling features, bearing seats, encoder mounts - specify your requirements.
Q6: Minimum wall thickness?
A6: Approximately 1 mm - we check feasibility during RFQ.
Quality is non-negotiable in precision manufacturing. Every component undergoes rigorous inspection at each stage of production.
- ISO 13485 - Full FDA compliance support; quality management system for medical device components
- ISO 11607 / FDA 21 CFR 820 - Packaging and sterilization validation for implantable and surgical devices
- ASTM F136 / F67 - Material specification compliance for implant-grade titanium and stainless
- First Article Inspection (FAI) - Full dimensional and functional report for every medical component
- CMM Inspection - Coordinate measuring for complex geometries and tight tolerances
- Surface Roughness Measurement - Ra, Rz, and Rt charting with every inspection report
- Passivation / Electropolishing - ASTM A967 procedures for corrosion resistance
- Material Traceability - Heat number tracking from raw material to finished part
From raw material to finished product, every step is controlled and documented:
- Material Selection - Ground bar or forged blank with material certification
- Rough Machining - CNC turning to steps, grooves, and features
- Splining / Keyway Cutting - Hobbing or broaching for transmission features
- Heat Treatment - Induction hardening, case-hardening, or through-hardening
- Finish Grinding - Centerless or between-centers grinding for final diameter/tolerance
- Polishing / Superfinishing - Ra 0.2–0.8 μm surface finish for bearing surfaces
- Inspection & Packaging - CMM check, surface roughness report, rust prevention packaging
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