English

Español
Pусский
简体中文
You are here: Home » Products » Press Brake Tooling » Precision Press Brake Dies & Punches (Standard & Custom)

Product Category

Rebar Blade

Metal Shear Blade

Press Brake Tooling

Crusher Blade & Chipper blade & Shredder blade

Rolling Mill Wear Plates

Ironworker Die & Tooling

Tire Profiling & Cutting Knives

Shaped Industrial Blades

PHC&Concrete pile machine accessories

Stamping Dies

Contact Us
Share to:

Precision Press Brake Dies & Punches (Standard & Custom)

High-Precision Press Brake Dies in Action

High-Precision Press Brake Dies in Action | Clean Bending Performance

Watch our press brake dies deliver perfect, consistent bends on industrial sheet metal. As a professional tooling manufacturer, we ensure every punch and die is precision-ground and induction-hardened to meet the strictest fabrication standards.

Video Highlights:

  • Perfect Alignment: See the seamless interlocking of the punch and V-die for accurate angles.

  • Surface Protection: Our polished tool surfaces ensure minimal marking on your workpieces.

  • Universal Compatibility: This setup is compatible with Amada, Promecam, and European-style press brakes.

Why choose our press brake dies?

  • Material: Forged 42CrMo for maximum strength.

  • Durability: Induction hardened to 47+/-2 HRC.

  • Customization: Segmented lengths and special profiles available on request.


Product Description

High-Precision Press Brake Dies: Complete Technical & Selection Guide

1. Product Overview

We supply a full lineup of segmented press brake tooling, including multi-V dies, acute angle punches and gooseneck punches, covering nearly all standard sheet metal bending applications.
All our tooling is precision forged from premium 42CrMo (AISI 4140 / SCM440) alloy steel. Full-length induction hardening delivers a consistent hardness of HRC 47±3, offering outstanding wear resistance for continuous heavy-duty production. Every tool is finish-ground to tight tolerances, guaranteeing high dimensional accuracy, stable bending performance and extended service life for industrial metal forming operations.

2. Why Precision Dies Are Critical for Bending Quality

Final bending accuracy relies heavily on die quality, not just the press brake’s CNC control system.
Even high-end CNC hydraulic bending machines cannot compensate for defects caused by worn, deformed or low-precision dies. Inferior tooling frequently leads to inconsistent bending angles, edge waves, distorted workpieces and high scrap rates, which push up production costs and reduce overall workshop efficiency.
Our heat-treated, precision-machined dies eliminate angular deviation and edge wave problems at the source. They deliver stable, repeatable bending results across full-length workpieces, making them a reliable solution for high-volume precision sheet metal fabrication.

3. Press Brake Dies: Definition, Structure & Working Principle

3.1 Definition & Industry Applications

Press brake dies are specialized tool sets designed to pair with hydraulic bending machines. They form flat sheet metal into standard profiles, including 90° corners, V-shapes and U-shapes. These tools are widely adopted in machinery manufacturing, sheet metal processing, hardware production and cabinet fabrication.

3.2 Main Components

Upper Die (Punch): Moves vertically with the machine slider. Its profile defines the final shape of bent parts, whether straight, sharp or curved.
Lower Die: Secured firmly on the machine table with a standard V-groove structure. V-groove width directly affects pressure distribution and the overall quality of finished bend parts.

3.3 Working Process

1. Place sheet metal flat on the lower die surface; 2. The machine slider lowers the upper die to apply uniform pressure; 3. The sheet metal is pressed and formed to match the die contour; 4. The upper die resets upward, and the finished workpiece is removed.

4. Material Performance: 42CrMo Alloy vs. Ordinary Carbon Steel

In continuous industrial bending, tool tips endure persistent high-pressure extrusion and fatigue stress. Conventional carbon steel such as 45# steel features low hardness and poor toughness. Under long-term tonnage loading, it easily deforms, wears down and loses its original precision profile, resulting in unstable bending angles.
By contrast, high-grade 42CrMo alloy steel is formulated with balanced chromium, molybdenum and manganese content. It delivers exceptional structural rigidity and impact resistance, effectively resisting deflection and profile abrasion under sustained heavy loads. This makes it the optimal material for high-precision, long-lasting bending tooling.

5. Core Technical Advantages (Zero Angular Deviation & Edge Waves)

5.1 Full-Length Hardening & Ultra-Precision Parallelism

All functional working areas, including punch tips and lower die shoulders, undergo full-length CNC induction hardening, achieving uniform HRC 47±3 hardness throughout the tool. The hardened outer layer ensures long-term wear resistance, while the tough inner steel core absorbs instantaneous impact force during bending cycles.
After heat treatment, every die is precision ground to a strict 0.01mm/m parallelism tolerance, eliminating all horizontal and vertical surface waviness. This ensures even pressure distribution along the entire workpiece, delivering consistent bending angles and completely removing edge wave defects.

5.2 Flexible Segmented & Custom Tool Geometry

Our segmented die sets consist of interchangeable modules ranging from 10mm to 400mm, which can be freely combined to fit various bending lengths. This flexible configuration handles complex workpieces such as deep four-sided boxes and narrow return flanges, and effectively avoids tool-to-workpiece interference during operation.
In addition to standard specifications, we offer custom-shaped dies to accommodate non-standard workpiece forming requirements.

5.3 Universal Compatibility with Mainstream Bending Machines

Our tooling fits all mainstream international clamping standards, including Amada/Promecam, Trumpf/Wila and new universal standard systems. Standard dimensions match most popular domestic and imported bending machine models, supporting fast installation and perfect operational compatibility.

6. Press Brake Die Classification

6.1 By Shape

  • Standard Straight Dies: Suitable for general straight bending, the most widely used and versatile die type

  • Acute Angle Dies: Used for narrow angles and high-precision fine bending applications

  • Gooseneck Dies: Perfect for U-shaped and deep bending work, preventing processing interference

  • Arc Dies: Designed for curved and rounded workpiece forming

  • Custom Irregular Dies: Custom manufactured for special-shaped workpieces

6.2 By Application Scenario

  • Standard Grade: Cost-effective solution for mild steel, galvanized steel and other common low-hardness materials

  • High-Strength Grade: Features enhanced hardness and thickness, ideal for tough materials including stainless steel

  • Thin Material Grade: Optimized surface design to prevent scratches and deformation on ultra-thin metal sheets

6.3 By Machine Compatibility

  • Amada/Promecam Type: Fully compatible with Amada series bending machines

  • Trumpf/Wila Type: Matches the mounting standards of Trumpf and Wila equipment

  • Universal Standard Type: Adaptable to most conventional domestic bending machines

7. Professional Die Selection Guide

Correct die selection is essential for stable bending quality and prolonged tool service life. Follow the practical guidelines below for accurate matching:
1. Match dies with workpiece materialsDifferent metals feature unique bending elasticity and toughness. Harder materials like stainless steel require dedicated high-strength punches to prevent angular deviation and springback defects.
2. Follow standard V-groove width rules- Thin sheets (＜3mm): V-groove width = 6 × material thickness - Medium sheets (3–8mm): V-groove width = 8 × material thickness (universal industry standard) - Thick sheets (＞8mm): V-groove width = 10–12 × material thickness Strict implementation of these rules avoids sheet cracking and premature die damage.
3. Match machine tonnage capacitySelect dies that withstand the maximum working pressure of your bending machine to prevent overload and tool failure.
4. Select suitable punch profilesChoose punch shapes according to the final forming requirements of target workpieces.
5. Confirm machine fitting accuracyVerify die dimensions and clamping structure compatibility to ensure seamless installation and stable operation.

8. Practical Production & Operation Tips

  • Reserve reasonable compensation for metal springback in advance, as it is the main cause of bending angle inaccuracies

  • Strictly follow V-groove matching specifications to prevent workpiece cracking and tool breakage

  • Check die compatibility and installation tightness before formal mass production

42CrMo International Standard Comparison Table (Essential for Selection)

Country/Standard Organization

Standard Code

Corresponding Grade

China (GB)

GB/T 3077

42CrMo or 42CrMo4

USA (AISI/ASTM)

ASTM A29

4140

International Organization for Standardization (ISO)

ISO 683-1

42CrMo4

Germany (DIN)

DIN EN 10083

1.7225 (or 42CrMo4)

Japan (JIS)

JIS G4105

SCM440

UK (BS)

BS 970

708M40 (EN19)

Why 42CrMo Is More Durable Than Ordinary Carbon Steel？

42CrMo alloy steel offers significantly higher durability compared with ordinary carbon steel, thanks to its alloy composition, heat treatment performance, and mechanical properties.

It contains chromium(Cr), molybdenum(Mo) and manganese, which greatly improve:

Higher hardness and wear resistance

Better strength and toughness

Higher tensile and yield strength

Excellent performance under high pressure and heavy load

Longer service life in industrial applications

Ordinary carbon steel is soft, wears out quickly, and deforms easily under pressure.42CrMo maintains shape, stability even under long-term heavy working conditions, making it the ideal material for press brake toolingand molds.

Hydraulic Press Brake Dies drawing

Press Brake Dies FAQ

Press Brake Dies FAQ

Q1: Which material suits high-precision press brake dies best?

42CrMo, marked DIN 1.7225, stands as the premium choice for professional die production. It boasts higher strength and better toughness compared to ordinary carbon steel.

Q2: Do your dies work with Amada, Trumpf and LVD bending machines?

Absolutely. Our press brake tools conform to specifications of all mainstream machine models.
Euro style, compatible with Amada and Promecam devices, adopts common universal clamping structure.
New standard type matches Wila and Trumpf machines, featuring precise button and hydraulic clamping design.
American style comes with standard tenon clamping, applicable to traditional American equipment.
Provide your clamping dimension data, and we can deliver fully matched products.

Q3: How to pick proper V opening size for sheet metal processing?

Adopt the 8 times calculation standard: V opening width equals eight times the sheet thickness.
Take 2mm thick steel sheet as an instance, 16mm V die is the proper option.
For sheets over 6mm thick, select V opening size at 10 or 12 times the thickness. This cuts bending pressure and prevents die damage.

Q4: Is segmented tooling available for compact box bending work?

We provide customized segmented bending tools.
Conventional 835mm long tools can be divided into multiple small sizes, including 10mm, 15mm, 20mm, 40mm, 50mm, 100mm, 200mm and 400mm.
Combine different segments freely to fit actual bending length, perfectly meeting four-side box forming demands.

Q5: What methods prevent surface scratches on polished stainless steel?

Practical measures are listed below:
Pick V dies with wider shoulder radius
Apply dies fitted with nylon or plastic protective inserts
Lay protective fabric or plastic film on die surfaces before bending operation
Phone:
86-15852949220
Email:
mt@alasmachinery.com
Address:
Jiangning District, Nanjing
About Us

Nanjing Alas International Co., Ltd. is a professional industrial tooling manufacturer focused on shear blades, bending dies, shredder blades, and custom wear parts. We offer full application engineering, material selection, setup guidance, and after-sales support to global customers.
Tell us your requirements, and our engineering team will provide professional solutions for blade specification, tool life optimization, and cost-effective production.

Quick Links
ALAS Resources
How To Choose Metal Shear Blade Materials？

How to Choose Suitable Metal Shear Blades for Different Types of MetalsChoosing suitable metal shear blades is a core prerequisite for ensuring smooth cutting sections, precise dimensions, and efficient operation of metal processing production lines. Whether cutting carbon steel, stainless steel, al

How To Choose Press Brake Tooling?

The core of selecting a bending machine die is matching the bending process requirements, workpiece characteristics, and equipment parameters. This needs to be confirmed step-by-step to ensure bending accuracy, efficiency, and die life:Select the punch angle based on the bending angle and springback

Subscribe
Sign up for our newsletter to receive the latest news.
​Copyright 2021 NANJING ALAS INTERNATIONAL CO., LTD            苏ICP备2021025144号