SHOMEA Multi-step Stainless Steel Bushing with Helical Groove

316L/304 stainless steel with excellent corrosion resistance, high temperature tolerance, and biocompatibility

High-precision forming of complex geometries completed in a single clamping on a sliding head lathe

Precision spiral groove design delivers excellent transmission and guiding performance

Precision grinding and polishing treatment achieves surface roughness Ra 0.4-0.8μm

FAQs:

Q1: What is the maximum outer diameter and length range for this part? Are there size limitations for Swiss-type machining?

A: General machining range is φ1mm-φ32mm in diameter and up to 200mm+ in length. Swiss-type lathes excel at slender shafts and multi-step micro-parts. For diameters exceeding 32mm or overly heavy parts, we recommend hybrid turning-milling centers.

Q2: Is 304 or 316L stainless steel better for this part? How to select based on operating environment?

A: 304 is suitable for general industrial and food-grade applications; 316L, containing molybdenum, offers superior chloride corrosion resistance and is recommended for marine environments, medical devices or chemical media contact.

Q3: How is the accuracy of the helical groove guaranteed? Will it produce burrs or stress concentration?

A: Machined using synchronous guide bushing or dedicated forming tools on Swiss-type lathe, combined with high-pressure coolant chip breaking system. Groove walls are smooth without burrs, with uniform stress distribution validated by FEA.

Q4: What is the achievable surface roughness? Can additional surface treatments be applied?

A: Standard turning achieves Ra 0.8μm, precision grinding reaches Ra 0.4μm. Optional surface treatments include anodizing, electropolishing, nickel plating or DACROMET coating to meet specific corrosion resistance or biocompatibility requirements.

Q5: What is the Minimum Order Quantity (MOQ)? What are the sample lead time and mass production delivery time?

A: Sample orders accepted from 10 pieces, with lead time of 3-5 working days. Mass production delivery is typically 7-15 working days depending on quantity and complexity, with rush order support available.