Metal Spinning Services: Axisymmetric Parts Without Expensive Tooling
Metal spinning—also called spin forming—shapes axisymmetric parts like cones, domes, housings, and reflectors by pressing a rotating disc or tube of metal against a mandrel. It needs only a simple mandrel, not an expensive die, which makes it ideal for prototypes and mid-volume round parts. This guide covers materials, tolerances, and when spinning beats stamping or casting.
What Spinning Is
A blank spins on a lathe while a roller forms it onto a mandrel—cold or hot. The process preserves the metal’s grain, giving strong, seamless parts. It pairs naturally with our sheet metal and CNC bending capabilities for hybrid assemblies.
Materials
Aluminum, stainless steel, carbon steel, and copper all spin well. Stainless benefits from passivation after forming; aluminum from anodizing. Thin-to-medium gauges form best, though heavier sections are possible with heat.
vs. Stamping and Casting
Stamping needs costly dies and wins only at very high volume. Casting adds material and machining. Spinning’s low tooling cost makes it the smart choice for prototypes, spares, and runs up to thousands. Our CNC turning can finish spun parts to tight tolerance.
Tolerances
As-spun tolerances are ±0.5–1 mm on diameter, improved by trimming and turning the rim and base. Wall thickness is controllable; local thickening is possible where strength is needed.
Applications
- Lighting and reflectors — seamless, polished surfaces.
- Pressure vessels and housings — strong, round, leak-tight.
- Cones and nose pieces — aerospace and defense.
- Cookware and décor — formed, seamless, attractive.
FAQ
When does spinning beat stamping?
Below the volume that justifies a die, or for prototypes and spares.
What wall thickness?
From foil-thin to several mm, with local thickening where needed.
Can you finish spun parts?
Yes—trim, turn, anodize, passivate, and coat.
Why Choose Huaxiao for Metal Spinning
Our fabrication service combines spinning, bending, machining, and finishing so round parts ship complete. Explore sheet metal fabrication and custom fabrication. Upload your drawing for a quote.
