Gemnexa CNC
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Top-Quality Long Axis Components for Heavy-Duty CNC Milling
The 420J2 Stainless Steel Long Shaft with Side Holes and Threads is a precision-engineered part designed for power transmission, actuation, or positioning systems. Made from high-grade 420J2 martensitic stainless steel, it offers exceptional hardness and wear resistance following professional heat treatment. Key features include long shaft geometry, side holes for lubrication/sensing, and precision machined threads.
Processing Workflow:
| Category | Feature | Specification Details |
|---|---|---|
| Material | Grade | 420J2 Stainless Steel (AISI 420J2, UNS S42000) |
| Physical Properties | Hardness | 50 – 55 HRC (Hardened and Tempered) |
| Dimensions | Shaft Diameter | 5 mm to 80 mm |
| Dimensions | Shaft Length | Up to 1500 mm |
| Features | Side Holes | Diameter: 2 mm to 20 mm; Tolerance: ±0.05 mm |
| Features | Threads | Metric, UNC/UNF, ACME, or custom (M3 to M30+) |
| Tolerances | Diameter | Standard: ±0.02 mm; Precision: ±0.005 mm |
| Surface Finish | Shaft Body | Ra 1.6 µm (Ground Journals: Ra 0.4 – 0.8 µm) |
| Post-Processing | Protection | Passivation (AMS 2700) or Black Oxide Coating |
Our facility has obtained ISO 9001:2015 and ISO 13485:2016 (Medical Device) certifications. We specialize in the research and production of non-standard metal medical device precision parts. Equipped with high-precision engraving lathes, CNC centering machines, automatic lathes, and turning-milling combined machines, we provide rapid delivery and craftsmanship-level quality. Main materials processed include stainless steel tubes, copper, aluminum alloys, and stainless steel capillary tubes.
