Precision Radius Punches for Seamless Sheet Metal Bending
Engineered with premium tool steel and CNC precision grinding to deliver controlled transitions, minimal stress cracking, and flawless surface finishes in our press brake punches for stainless steel and custom metal fabrications.
CAMT High-Precision Press Brake Radius Punch
Micro-Polished Edge Radius
Controlled Strain Distribution
Why Choose CAMT Radius Punches
Maximize press brake performance with tooling engineered for forming quality, surface protection, and long-term production stability across our products.
Precision Ground
Every precision ground punch delivers smooth radius transitions and consistent material contact, guaranteeing uniform angle repeatability during stroke execution.
High-Hardness Tool Steel
Premium hardened press brake tooling maximizes wear resistance, significantly extending tool service life even under heavy production bending loads.
Advanced Heat Treatment
Deep thermal processing boosts overall structural toughness, allowing our punches to reliably withstand high-frequency, continuous bending cycles without deformation.
CNC Machining
High-precision CNC production guarantees strict profile uniformity, providing exceptional repeat accuracy across both standard and long tooling sections. Explore our press brake tooling range for more options.
Smooth Bending Results
Achieve flawless smooth bending results that significantly reduce surface galling, pressing marks, and cosmetic damage on delicate sheet metal surfaces.
Custom Radius Options
Every custom radius punch is tailored to accommodate non-standard radii, complex bend geometries, and specialized manufacturing conditions.
Reliable Tooling for High-Speed Press Brakes
CAMT radius punches combine precision machining with hardened steel engineering to eliminate downtime and elevate production efficiency across all automated or manual setup lines. These press brake punches are built for consistent output.
100%
Quality Tested
ISO
Standard Precision
Structural Design & Working Principle
Discover how CAMT radius profile punches optimize load distribution, reduce stress concentration, and deliver smooth, consistent metal forming results. For a broader overview of our press brake tooling options, explore the full lineup.
Radius Edge Geometry & Stress Relief
The smooth, continuous profile curvature facilitates uniform material flow during forming strokes. This gradual contact prevents micro-fracturing and eliminates severe localized stress concentration.
Advantage Over Standard Sharp Punches
Standard sharp punches focus tonnage on narrow contact lines, often creasing or galling the sheet. A radius profile punch creates gentle, continuous bend transitions without marking sensitive surfaces, while our press brake punches collection covers additional forming needs.
Consistent Bending & Surface Quality
Balanced load distribution ensures predictable springback and an exceptionally smooth aesthetic finish. CAMT metal forming tooling guarantees tight tolerances and repeatability across high-volume production.
Precision Precision-Ground Manufacturing
Ideal for structural components requiring specified inner radii. CAMT uses advanced CNC machining and precision grinding to maintain perfect profile uniformity across every punch section. For clearance-sensitive applications, compare offset punches.
Target Applications & Key Industries
CAMT precision radius punches are engineered for high-demand sheet metal fabrication lines worldwide, and our products deliver smooth, stress-free bends and defect-free finishes across diverse sector requirements.
Sheet Metal Fabrication
Precision radius forming for general sheet metal fabrication and architectural panels requiring controlled material flow and consistent angles using our press brake tooling.
Eliminates harsh creasing lines, ensuring structural integrity and uniform cosmetic transitions across long sheets.
Stainless Steel Processing
Smooth, defect-free radius bending for high-grade stainless steel parts that cannot tolerate surface fracturing or severe dies markings.
Precision ground tool surfaces reduce friction and work-hardening risks during heavy stainless steel bending.
Electrical Enclosures & Cabinets
Consistent, clean-radius corners for server racks, control boxes, network cabinets, and sealed industrial housings.
Provides exact profile consistency, facilitating flawless door sealing and gasket placement on cabinet seams.
HVAC Systems
Durable radius tooling for ductwork, blower housings, transitions, and commercial air handling structural frames.
Maintains dimensional stability through continuous high-volume production of galvanized steel and aluminum ducts.
Elevator Manufacturing
High-cosmetic forming for elevator doors, cab wall panels, entrance frames, and architectural metal trim.
Delivers flawless curved transitions on pre-grained or mirror-finished decorative stainless steel panels.
Automotive Components
Specialized press brake tooling for structural metal brackets, interior frame stiffeners, and custom prototype parts.
Deep-hardened tool steel withstands repetitive high-tonnage cycles without tip radius deformation.
Material Compatibility
CAMT radius punches are precision-engineered to process various metal grades, and our press brake punches help optimize bend radii while preventing sheet cracking.
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Carbon Steel
High-tonnage capability for reliable structural forming with zero edge distortion.
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Stainless Steel
Polished profiles prevent galling, metal pick-up, and cosmetic surface scratches.
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Aluminum Alloys
Gradual radius transition prevents outer tensile cracking during sharp angle bends.
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Custom Sheet Metal
Tailored punch geometries custom-built for high-tensile or exotic metal specifications.
Global Manufacturing Standard
Equipping OEMs and contract fabricators worldwide with high-precision radius punches, press brake punches, and expert technical guidance.
Specifications & Customization Capabilities
CAMT provides high-precision radius punches engineered to standard press brake tooling specifications or fully customized to your specific sheet metal forming demands.
OEM / ODM Customization
Partner with CAMT for drawing-based manufacturing and tailored tool geometry. We produce custom press brake punches directly from CAD drawings, physical samples, or unique bending process requirements.
- ✓Drawing & Profile Optimization In-house engineering support to refine tooling profiles for improved manufacturability and bend accuracy.
- ✓Strict Tolerance Control Micron-level dimensional tolerances ensure exact segment-to-segment alignment and high repeatability.
- ✓Specialized Tool Development Custom heights, non-standard tip radii, and modified shanks to fit various global press brake clamping systems.
Standard Tooling Specifications
| Parameter | Standard Options | Application Details |
|---|---|---|
| Radius Size Range | R3.0 mm – R50.0 mm+ | Covers smooth radius bending across thin gauge sheets to heavy plate metal. |
| Punch Length & Segmentation | 415 mm, 835 mm, Cut-to-Length | Modular segments compatible with Amada, Trumpf, Promecam, and European systems. |
| Material Selection | 42CrMo / 40Cr / Cr12MoV | High-grade alloy tool steels selected for maximum tensile strength and structural integrity. |
| Surface Finish | Precision-Ground (Ra ≤ 0.4 µm) | Smooth contact surfaces reduce friction, preventing sheet surface marring during bending. |
| Heat Treatment | Induction Hardened (HRC 47 ± 2) | Balanced surface hardness and core toughness for high-cycle industrial production. |
| Dimensional Tolerance | ± 0.01 mm | Ensures uniform pressure distribution and seamless multi-segment tool alignment. |
Choosing the Right Radius Punch
Select the optimal radius punch by evaluating material behavior, sheet thickness, aesthetic requirements, and press brake tooling compatibility to eliminate costly trial and error on the shop floor.
Selection by Material
Stainless Steel
High springback rates require larger tip radii and polished tool surfaces to prevent galling and severe sheet scoring.
Mild Steel
Offers predictable formability; standard radius punches deliver consistent geometry across high-volume production runs.
Aluminum Alloys
Soft, sensitive surfaces demand smooth-ground radius radii or protective film to eliminate die marking and fracturing.
Selection by Thickness
Heavy Plate (> 6 mm)
Requires generous tip radii (≥ 3× plate thickness) to distribute bending force and prevent outer-tensile cracking.
Medium Gauge (2–6 mm)
Mid-range punch radii (R2–R8) balance structural integrity with manageable springback compensation.
Thin Sheet (< 2 mm)
Small-radius punches (R0.5–R2) produce crisp profile lines while preserving strict dimensional tolerances.
Selection by Aesthetic Goal
Surface Protection
Opt for fine-ground radii with specialized surface treatments to eliminate contact blemishes on architectural parts.
Seamless Transitions
Larger radius profiles blend bend lines smoothly into flat spans for high-end enclosures and cabinet panels.
High-Speed Productivity
Standardized radius tooling with modular sectionalization streamlines repetitive setups on automated bending cells.
Selection by Machine System
Press Brake Tonnage
Match the punch load capacity to peak bending forces to avoid tool deformation or hydraulic overloading.
Shut Height & Stroke
Verify total tool stack height fits the machine daylight to ensure complete part clearance during retraction.
Clamping Style
Align tang configurations—European, American Precision, or Wila/Trumpf—with your existing hydraulic holders.
Radius Punch vs. Alternative Punch Profiles
Scroll horizontally to view full matrix →| Punch Type | Tip Profile | Best Application | Key Advantage | Limitation |
|---|---|---|---|---|
| Radius Punch | Contoured radius (R0.5–R20+) | Smooth radius bends, thick plate, aesthetic panels | Prevents outer cracking; minimizes surface marking | Unsuited for tight acute angles or deep return bends |
| Acute Punch | Sharp angle (30°–60°) | Pre-hemming, Acute Punches, and narrow return flanges | Achieves sharp bend lines and over-bending in one hit | Concentrates stress; can crease soft metals |
| Gooseneck Punch | Relieved neck profile | Deep box forming, channels, return legs | Clears pre-formed flanges to prevent workpiece collision | Lower load limits due to offset throat geometry |
| Offset Punch | Stepped alignment body | Z-bends, offset steps, joggle forming | Forms two opposing bends simultaneously | Requires fixed material thickness and high tonnage |
5-Step Radius Punch Selection Process
A structured workflow designed to align tooling specifications with project requirements.
Submit Drawing
Provide your part drawing showing target bend radii, wall thickness, and flange lengths.
Material Verification
Review material grade, tensile strength, and surface protection requirements.
Tool Specification
Match tip radius, overall height, and tang style to your machine system specifications with the right press brake punches for the job.
Prototype / Trial Run
Validate bend profile accuracy and surface finish with a sample order before volume tooling.
Production Batch
Deploy hardened, precision-ground tooling for repeatable, continuous production.
Upload Your Drawing for Technical Tooling Assistance
CAMT’s application engineers provide complimentary drawing evaluations and tool compatibility checks for press brake punches to ensure accurate forming and long tool life on your press brake.
- ✓ Free engineering review with no purchase obligation
- ✓ Punch radius matched to your sheet material and machine clamping system
- ✓ Custom profile modification options for non-standard bending jobs
Manufacturing Process & Quality Control
CAMT ensures consistent bending accuracy and long service life through rigorous process controls across every tooling batch of our press brake tooling.
Six-Step Tooling Manufacturing Workflow
Premium Tool Steel Selection
Sourced high-grade alloy tool steels fully traceable with official Material Test Certificates (MTC) for press brake punches.
Precision CNC Machining
High-precision profile milling to guarantee exacting contours, tight tolerances, and geometric consistency.
CNC Precision Grinding
Fine CNC surface grinding to eliminate chatter marks and achieve smooth, uniform radius profiles.
Vacuum Heat Treatment
Deep-hardening heat treatment and tempering to deliver optimal core toughness and wear resistance.
Dimensional & Profile Inspection
Comprehensive optical profiling, Rockwell hardness verification, and multi-segment alignment testing.
Rust-Proof Export Packaging
Protective anti-rust oil application and reinforced crating engineered for safe international transit.
Quality Control Checklist
As a leading press brake tooling manufacturer, CAMT inspects every critical parameter prior to final shipment.
- Verified Tool Steel Certification (MTC)
- Micro-Tolerance Radius Contour Verification
- Hardness Uniformity Testing (HRC Batch Checking)
- Ground Working Surface & Edge Inspection
- Multi-Section Alignment & Fit Check
- Anti-Corrosion Coating & Export Packaging Audit
Every stage of tool steel machining and heat treatment supports specialized offset punches and adheres to strict internal quality standards to minimize procurement risks.
Frequently Asked Questions
Get fast answers about radius punches, custom CAD tooling manufacturing, lead times, and material compatibility from CAMT tooling specialists. For related forming setups, explore our press brake tooling, press brake punches, and gooseneck punches for other bending needs.
What sheet metal applications are best suited for radius punches?
Radius punches are designed for precision bending jobs that require smooth, controlled inside radii without compromising structural integrity or damaging surface finishes.
- Forming high-end architectural metalwork, elevator panels, and electrical enclosures where cosmetic appearance is critical.
- Eliminating stress concentration along bend lines to prevent micro-cracking in thick plate or work-hardening metals.
- Bending structural components in HVAC, automotive, and heavy industrial machinery requiring specific large radii.
How do I determine the correct punch radius for my material thickness?
Selecting the ideal punch radius depends on material ductility, tensile strength, grain orientation, and sheet thickness (T).
- Mild Carbon Steel: Typically uses a minimum radius ranging from 0.63T to 1.0T for stable angle consistency.
- Stainless Steel & High-Strength Alloys: Require larger radii (1.5T to 3.0T) to reduce springback and prevent outer-wall cracking.
- Aluminum Alloys: Range from 1.0T to 2.0T depending on alloy temper and grain direction relative to the bend line.
Can CAMT manufacture custom radius punches from customer CAD drawings?
Yes. CAMT offers full OEM/ODM custom manufacturing tailored to your exact press brake system and part geometry.
- We accept standard CAD vector formats including STEP, IGES, DXF, and DWG.
- Every design undergoes a complimentary Design for Manufacturability (DFM) review by our tooling engineers.
- Custom options include specialized tool steels (42CrMo, D2), targeted heat treatments, and anti-friction surface coatings.
Are your radius punches suitable for high-tensile stainless steel forming?
Absolutely. Our radius punches are engineered specifically to handle high tonnage loads and abrasive forming conditions.
- Manufactured from premium alloy tool steel subjected to deep vacuum heat treatment for optimal core toughness.
- Precision CNC-ground working surfaces minimize friction, galling, and wear when forming 304/316 stainless steel.
- Engineered to maintain strict profile tolerances under high tonnage per foot without deflection or edge chipping.
What is the standard production lead time for custom and OEM tooling?
We maintain efficient lead times to keep your production schedules running on time.
- Standard Tooling: Ships within 3 to 5 business days from ready stock.
- Custom Radius Tooling: Ships in 2 to 3 weeks after final drawing confirmation.
- Expedited OEM Production: Rapid manufacturing options are available for urgent project deadlines.
Do you support low-volume sample orders alongside full production batches?
Yes, CAMT supports fabricators through every phase, from trial prototypes to high-volume manufacturing contract supply.
- Low minimum order constraints on initial custom tooling orders for seamless testing.
- Full inspection reports and dimensional verification provided with evaluation samples.
- Scalable CNC grinding lines allow smooth transition from trial approval to full production supply.
Global Tooling Expertise
CAMT delivers high-precision press brake tooling and custom radius punches to sheet metal manufacturers worldwide. Our engineers help streamline procurement and optimize tool performance.
Have a Custom Drawing?
Send your CAD files directly to our application engineering team for a fast design review and competitive quote.
Submit CAD Drawing