Bending Die: Angle 30°, 45°, 90° standard, Radius 0.5mm to 10mm

Component Specifications

Definition

A bending die is a specialized tool component within a bending tool assembly, designed to create precise angular bends in sheet metal or plate materials through controlled deformation. It works in conjunction with a punch to apply force at specific points, forming materials into desired shapes with accurate angles and radii while maintaining material integrity and dimensional consistency.

Working Principle

The bending die operates on the principle of plastic deformation, where a punch applies downward force on the workpiece against the stationary die. The material undergoes controlled bending around the die's radius, with the die's geometry determining the final bend angle, radius, and shape. The process involves precise alignment, force application, and material flow control to achieve consistent results without cracking or springback issues.

Materials

Tool steel (D2, A2, O1), carbide inserts, hardened to 58-62 HRC for wear resistance; sometimes chrome-plated for corrosion protection

Technical Parameters

Parameter	Typical range	Notes & selection driver
Angle	30°, 45°, 90° standard
Length	835mm standard, custom up to 6000mm
Radius	0.5mm to 10mm
Tonnage	Compatible with press brake capacity
V Opening	Standard sizes: 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 32mm

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 9001:2015, DIN 8586, ISO 2768-mK

Parent Products

This component is used in the following industrial products

Bending Tool Assembly

A specialized assembly within a busbar processing unit designed to precisely bend copper or aluminum busbars to required angles and shapes.

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Engineering Analysis

Risks & Mitigation

Material springback causing inaccurate angles
Edge cracking in brittle materials
Tool wear leading to inconsistent bends
Misalignment causing asymmetrical parts
Overloading beyond tool capacity

FMEA Triads

Trigger: Incorrect V-opening selection
Failure: Material cracking or incomplete bending
Mitigation: Follow material thickness to V-opening ratio guidelines

Trigger: Worn die radius
Failure: Inconsistent bend radius and surface marks
Mitigation: Regular inspection and timely replacement

Trigger: Improper alignment with punch
Failure: Asymmetrical bends and tool damage
Mitigation: Use precision alignment tools and regular calibration

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.1° angular tolerance, ±0.05mm radius tolerance

Test Method

Coordinate measuring machine (CMM) verification, go/no-go gauge testing, sample bend validation

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Bending Die

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

JINAN MOTI INDUSTRIAL CO., LTD

Jinan, Shandong, CN

Also makes: Transformer Winding Machine, Hydraulic Pump, Copper Busbar

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “Busbar bending die”
View source page ↗ motiindustrial.com · recorded 2026-09-05

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Explore company information and manufacturing capabilities, then discuss the scope of your project with a relevant supplier.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

Related Components

Chrome Plating

Hard chrome plating is an electroplating process that deposits a layer of chromium onto metal surfaces to enhance wear resistance, corrosion protection, and reduce friction for hydraulic cylinder piston rods.

Upper Tool (Punch)

Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.

Main Frame

The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.

Shaft Bearing

Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.

Frequently Asked Questions

What is the difference between a bending die and a bending punch?

The bending die is the stationary bottom tool that supports the material, while the punch is the moving upper tool that applies force. Together they create the bending action.

How do I select the correct V-opening size for a bending die?

V-opening is typically 6-12 times the material thickness. Thinner materials require smaller V-openings, while thicker materials need larger openings to prevent cracking.

What maintenance do bending dies require?

Regular cleaning to remove metal particles, inspection for wear or damage, proper storage to prevent corrosion, and occasional re-sharpening of edges.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Bending Die