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Radius Tooling & Bending

Urethane Radius Tooling for Faster, Cleaner Radius Bends

Bump Forming a large radius on a press brake takes dozens of hits, leaves visible bump lines, and depends on a steady operator to keep every part consistent. Urethane radius tooling from Polyurethane Products replaces that process. A steel punch presses the sheet into a urethane bottom die, and the urethane wraps the metal to a smooth, uniform radius in just a few strokes. One customer forming 180-degree stainless steel U-troughs went from 37 hits per part to 3.

For over four decades, we have designed and manufactured urethane tooling for sheet metal fabricators from our facility in Addison, Illinois. Whether you need a standard forming pad or a complete tooling system built to your print, our team will help you match the right tool to the part.

Red urethane die pad with teardrop-shaped cutouts bending a sheet in a press brake
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Why Fabricators Replace Bump Forming With Urethane Radius Tooling

  • Fewer hits per part. Our SMART PAD® system can form up to 8" of surface arc width in a single hit, which cuts press time and setup time on large radii.
  • Smooth, consistent radii. No bend lines, no kinking, and no variation from one operator to the next. 
  • Mar-free bends. Urethane protects the surface, so polished, painted, and perforated sheet comes off the brake ready for the next step.
  • One bottom die, many radii. Change the steel punch to form a different radius without changing the die.
  • Shorter setups. Large radius bends that once required careful bump spacing set up faster and repeat more reliably.

Large Radius Tooling: The SMART PAD® Urethane Large-Radius Forming Die

Our patented SMART PAD® large-radius forming system is built for radii of 1" and up. It handles any gauge and type of sheet metal, up to 3/8" thick stainless steel, and can form almost any radius by changing the punch.

Several models cover different jobs:

  • SMP1240: The original design, with hundreds in use worldwide for more than three decades
  • SMP620N: Built for smaller radii from 1" to 3"
  • SMP1240HD: A heavy-duty design that forms up to 1/4" mild steel to any radius
  • SMP1240SR: Molded steel rod and interlocking wear pad for stainless steel up to 3/8"

If your shop runs large-radius parts on a regular basis, a urethane large-radius forming die is often the fastest way to reduce cycle time without adding equipment.

Custom Radius Tooling for Metal Bending

Not every part fits a catalog tool. Our custom radius tooling program builds complete systems, including steel punches, to form radius bends per your print. We develop and test custom urethane tooling for radius bending on our own 400-ton American press brake and a European-style press brake before it ships to you.

Custom tooling we have built includes:

  • 30' long radius punches that form 1/8" to 1/4" stainless steel U-troughs in 3 to 5 hits, replacing 37 to 45 bumping hits on a CNC press brake
  • A custom steel punch and SMART PAD® die for perforated lighting covers, in use for over 10 years across 3 plants
  • Radius tooling for perforated truck muffler guards and semi-trailer corner posts, formed without kinking or weak spots
Get a Quote on Urethane Radius Tooling
Get a Quote on Urethane Radius Tooling

Request a quote or call 800-772-7072 to speak with our technical sales team.

Request a Quote

Standard Urethane Forming Pads for Tighter Radii

For V-bends, U-bends, and smaller radii, our standard pads drop into your existing press brake setup:

  • Poly Die Pads: POD and PUD pads form 90-degree or 180-degree bends in one hit. They sit in standard steel channel retainers with American, European, or Trumpf tangs, in lengths up to 48".
  • Molded Tang Forming Pads: Single-piece pads with the tang molded on for American, Amada, and Trumpf press brakes. Options include two-hit, 180-degree bull nose bending.
  • Metric Forming Pads: Available in 30mm, 80mm, and 110mm widths for mar-free bending of pre-painted, pre-polished, and coated sheet metal.

What to Send for a Radius Tooling Quote

You do not need to know which tool you need before you contact us. Our engineering team brings over 50 years of experience and will recommend a standard pad, a SMART PAD® system, or a custom build based on your part. To speed up your quote, send:

  1. A print or drawing of the part
  2. Material type and thickness
  3. Required radius and bend angle
  4. Bend length
  5. Press brake make and tang style

Want to see what other shops have formed? Browse examples of our successful applications.

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You have questions, we have answers. Contact us today. Our skilled customer service specialists can help you make the right choice in polyurethane applications.