Bending Die Holder

Product Specifications

Technical details and manufacturing context for Bending Die Holder

Definition

The Bending Die Holder is a critical component of the Bending Arm Assembly that provides rigid, accurate mounting and alignment for bending dies. It ensures proper die positioning during metal forming operations, maintaining dimensional accuracy and repeatability in bending processes. The holder is designed to accommodate standard bending dies with a die height range of 50–200 mm and a die width range of 20–100 mm. It offers a clamping force of 20–50 kN to securely hold the die in place, and achieves positioning accuracy of ±0.05 mm and repeatability of ±0.02 mm, which are critical for consistent bending results. The holder operates within a temperature range of -10 to 60 °C and is rated IP54 for protection against dust and water splashes. It is manufactured from tool steel or alloy steel, with a typical material grade of 42CrMo4 (DIN EN 10083) and a surface hardness of 48–52 HRC (DIN EN ISO 6508). The weight of the holder ranges from 15 to 30 kg, depending on size. The maximum operating pressure is 16 MPa, which should not be exceeded. This component is used in fabricated metal product manufacturing, specifically in bending operations where precise die alignment is essential. The holder uses mechanical clamping mechanisms, such as bolts, wedges, or hydraulic systems, to secure the die and transfer bending forces from the bending arm to the die while maintaining alignment. It is important to verify model-specific values and standards with the legal manufacturer or supplier before procurement or use.

Working Principle

The Bending Die Holder uses mechanical clamping mechanisms, such as bolts, wedges, or hydraulic systems, to secure bending dies in place. It transfers bending forces from the bending arm to the die while maintaining precise alignment, allowing for consistent bending angles and preventing die movement during operation. The clamping force of 20–50 kN ensures secure holding, and the positioning accuracy of ±0.05 mm and repeatability of ±0.02 mm contribute to consistent results. The holder is designed to accommodate dies within specified height and width ranges, and its operating temperature range and IP rating define its environmental limits. Proper installation and maintenance are necessary to maintain performance.

Common Materials

Tool steel, Alloy steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Clamping Force	20–50 kN	Ensures secure holding of bending die
Die Height Range	50–200 mm	Accommodates standard bending dies
Die Width Range	20–100 mm	Fits common die widths
Positioning Accuracy	±0.05 mm	Critical for bend consistency
Repeatability	±0.02 mm	Ensures consistent bending results
Operating Temperature	-10–60 °C	Outside range may affect performance
Maximum Operating Pressure	16 MPa	Do not exceed
Material Grade	42CrMo4	High strength and wear resistanceDIN EN 10083
Surface Hardness	48–52 HRC	Ensures durabilityDIN EN ISO 6508
Weight	15–30 kg	Depends on size

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

Components / BOM

Clamping Mechanism
Secures the bending die in position using mechanical or hydraulic force

Material: Hardened steel
Mounting Base Part
Provides attachment interface to the bending arm assembly

Material: Alloy steel
Alignment Guide
Ensures precise positioning of the die relative to the bending axis

Material: Hardened tool steel

Application & selection

Application Fit & Sizing Matrix

Operational Limits

pressure:	Max 500 bar
other spec:	Die weight capacity: 50 kg max
temperature:	-20°C to 150°C

Media Compatibility

✓ Sheet metal bending ✓ Tube forming operations ✓ Precision stamping dies

Unsuitable: High-vibration environments without damping

Sizing Data Required

Die dimensions and weight
Bending arm interface specifications
Required positioning accuracy

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause

Fatigue cracking

Cause: Cyclic loading from repeated bending operations leads to stress concentration at sharp corners or material imperfections, initiating cracks that propagate over time.

Wear and dimensional degradation

Cause: Abrasive contact with workpieces, misalignment, or insufficient lubrication causes gradual material loss, altering critical tolerances and surface finish.

Maintenance Indicators

Visible cracks, spalling, or deformation on die surfaces or mounting areas
Abnormal noises (e.g., grinding, clicking) during operation or inconsistent bend angles in produced parts

Engineering Tips

Implement regular dimensional inspections and non-destructive testing (e.g., dye penetrant) to detect early cracking or wear before catastrophic failure.
Optimize alignment, use proper die materials (e.g., tool steel with appropriate hardness), and apply suitable lubricants to reduce friction and stress concentrations.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards

ANSI B11.8 - Safety requirements for press brake systems DIN 55201 - Tool holders for press brakes

Quoted from the published standard.

Manufacturing Precision

Bore diameter: +/-0.01 mm
Surface flatness: 0.05 mm per 100 mm

Quality Inspection

Dimensional verification with CMM (Coordinate Measuring Machine)
Magnetic particle inspection for surface cracks

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

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Manufacturers of Bending Die Holder

Manufacturer profiles associated with Bending Die Holder.

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Frequently Asked Questions

What is the clamping force range of the Bending Die Holder?

The clamping force range is 20–50 kN, as listed in the directory. This ensures secure holding of the bending die during operation. Verify the exact value for your specific model with the manufacturer.

What die sizes can the holder accommodate?

The holder accommodates dies with a height range of 50–200 mm and a width range of 20–100 mm. These are reference ranges; confirm compatibility with your die dimensions using the manufacturer's specifications.

What is the positioning accuracy and repeatability?

The positioning accuracy is ±0.05 mm and repeatability is ±0.02 mm. These values are critical for consistent bending results. Always verify these parameters for the specific model with the supplier.

What are the operating temperature and IP rating?

The operating temperature range is -10 to 60 °C, and the IP rating is IP54, providing protection against dust and water splashes. Ensure the operating environment is within these limits to avoid performance issues.

Related equipment

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Bending Arm Assembly

View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems

Downstream Applications

Specialized Tooling

Bending Dies
LINKED
Punch Tools
LINKED

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

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.

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 · Page last updated 12 October 2026

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