20mm Iron Round Bar Markless Bending Machine
A benchtop rotary bender forms 20 mm solid iron round bar into U handles without surface marks - heavy bars in, clean bent pulls out, batch after batch.
Key Specifications
- Materials
- 20 mm carbon iron round bar
Key Features
- Bends 20 mm solid iron bar into U handles
- Markless die leaves the bar surface unmarred
- Wrap-around bend keeps the radius crisp
- Caliper checks verify bar diameter and legs
How Is 20 mm Iron Bar Bent Markless into U Handles?
Short answer: Around a markless wrap-around die. This video shows 20 mm solid iron round bar fed into a benchtop rotary bender - the operator indexes the bar at the bend pin for each corner, and heavy U handles come off with crisp radii and unmarred surfaces, checked with a caliper and stacked row after row.
What the Video Demonstrates
| Stage | Equipment | Result |
|---|---|---|
| Verify | Caliper on the bar stock | Correct 20 mm diameter confirmed |
| Clamp | Bar seated in the markless die | Groove supports the bend line |
| Sweep | Rotary wrap-around bend pin | Clean corner, no surface marks |
| Inspect | Finished handle held up | Crisp radius, straight legs |
Key Applications
- Heavy iron pull and door handle shapes
- Equipment frames, guards and bracket hardware
- Gate, cart and industrial handle production
- Shops replacing hand bending on solid bar
Markless Rotary Bending vs. Standard Bending
| Criterion | Standard bending | Markless rotary bending |
|---|---|---|
| Bar surface | Clamp and skid marks | Unmarred finish |
| Bend radius | Variable | Consistent wrap-around |
| Rework / polish | Often needed | Minimal to none |
| Heavy solid bar | Hard to hold | Supported in the die groove |
FAQ
What stock is demonstrated? 20 mm solid carbon iron round bar, as captioned in the video; dies are matched to other diameters on request.
What does "markless" bending mean here? The groove and clamp support the bar through the bend so the surface is not scored or dented - the handle keeps a clean finish straight off the machine.
Can the station bend stainless as well as iron? Yes - with the matching die groove and bend pin the same benchtop bender runs iron, steel and stainless round bar.