Metal Spinning Design Considerations
Typical Metal Spinning or Spin Forming Tolerances
General tolerances in metal spinning are +/- 1/32" (0.0313”), however each job must be evaluated on its own merits and special circumstances.
Tolerances will vary based on the part profile and the type and thickness of the material. Tolerances are generally inside diameter (ID) based as thinning of the material will occur during the spinning process. A more generous radius tolerance will normally ease production of a design. Radius tolerances will usually be 2X material thickness or greater. Flanges, beads, returns and reveals are common in spun metal parts design.
Welded wraps, drawn shells and tubing as well as circles, are candidates for spinning. Shapes not possible from other forming processes become possible with metal spinning.
Contact us for experienced advice on your specific needs and requirements.
Raw Material Sizes*
- Aluminum (48” diameter to 0.312” thick or 60” diameter to 0.190” thick)
- Mild steel (48” diameter to 0.250” thick or 60” diameter to 0.090” thick)
- Stainless steel (48” diameter to 0.187” thick or 60” diameter to 0.075” thick)
- Copper (48” diameter to 0.250” thick or 60” diameter to 0.125” thick)
- Brass (48” diameter to 0.250” thick or 60” diameter to 0.125” thick)
* Note: For certain applications, Spindustries can spin or swing up to 84” diameter blanks