Ring forming disc head with 4mm stainless wire being coiled
hoop-bending

4mm Stainless Wire Ring and Hoop Bending Machine | CNC

CNC wire bending machine forming full rings and hoops from 4mm stainless steel wire with coil feed. Clean round shapes with consistent diameter every cycle.

Key Specifications

Materials
Stainless steel wire, 4 mm (coil feed)

Key Features

  • Forms full circles and hoops from 4 mm stainless wire
  • Coil-fed wire straightening for continuous forming
  • Consistent ring diameter part to part
  • CNC program controls ring size and end style
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Which Machine Bends Perfect Circles from 4mm Stainless Wire?

Short answer: A CNC hoop bending machine. This video shows full rings being drawn from 4mm stainless steel wire - the wire wraps around the forming disc and closes into a clean circle with consistent diameter.

What the Video Demonstrates

StepOperationResult
1Coil wire fed and straightenedScratch-free 4 mm stainless wire
2Wire wrapped around forming discTrue circular radius
3Bend closed and cutCompleted ring
4Ring removedRepeatable diameter part to part

Key Applications

  • Hoops, bands and retaining rings for furniture and lighting
  • Circular frames for racks, baskets and displays
  • Reinforcement rings for composite and rubber products
  • Decorative stainless rings for hardware and crafts

CNC Hoop Bending vs Hand-Applied Ring Forming

CriterionHand formingCNC hoop bender
Diameter consistencyVariableProgram controlled
Cycle timeSlowSeconds per ring
Surface finishOften markedClean on stainless
Size changeoverNew jigProgram + disc change

FAQ

What ring diameters are possible? Ring size is set by the forming disc and CNC program; different diameters are produced by quick tooling changeover.

Can the ends be closed, butted or overlapped? End style is program controlled, supporting closed, butted and hook-back ring designs.

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