The 261mm Panel Bender Blankholder Tool is a precision upper clamping component designed for flexible panel benders and CNC panel bending centers. Installed in the blankholding system, it moves toward the sheet and works with the counterblade to clamp the material securely along the programmed bending line.

This upper clamping tool has an overall height of 261 mm and a maximum tool width of 108 mm. Its connection section features a 97 mm outer block width and a 62 mm clamping opening, providing a defined installation interface for the corresponding machine mounting system. The standard continuous tool length is 1000 mm.

The extended tool body transfers clamping force from the machine to the sheet, while the offset working profile places the contact area in the correct position relative to the bending line. Once the material is secured between the blankholder and counterblade, the upper or lower bending blade follows its programmed trajectory to form the projecting flange.

Manufactured from 42CrMo alloy steel, the complete blankholder is overall quenched and through-hardened to HRC46–52. Controlled material selection, heat treatment and precision machining provide the strength, toughness and dimensional stability required for repeated industrial sheet metal bending.

WYS Machinery can manufacture standard and custom panel bender blankholders according to original tooling drawings, physical samples, confirmed machine-interface dimensions and customer workpiece requirements.

Key Features

Precision blankholder tool for flexible panel benders
Installed in the upper sheet-clamping position
Overall height of 261 mm
Maximum tool width of 108 mm
Connection block outer width of 97 mm
Clamping opening width of 62 mm
Standard continuous length of 1000 mm
Manufactured from 42CrMo alloy steel
Overall quenched and through-hardened
Finished hardness of HRC46–52
Stable force transmission through the extended tool body
Offset working profile provides functional bending clearance
Defined clamping interface supports reliable installation
Suitable for replacement and customized panel bender tooling
Custom lengths, interfaces and working profiles available

Technical Specifications

Specification	Value
Product Type	Blankholder Tool / Upper Clamping Tool
Tooling Category	Panel Bender Tooling
Application	Flexible Panel Bender / CNC Panel Bending Center
Overall Height	261 mm
Maximum Overall Width	108 mm
Connection Block Outer Width	97 mm
Clamping Opening Width	62 mm
Standard Length	1000 mm
Material	42CrMo Alloy Steel
Heat Treatment	Overall Quenching / Through-Hardening
Hardness	HRC46–52
Installation Position	Upper Clamping Position
Main Function	Sheet Clamping and Bending-Line Positioning
Construction	Continuous Tool
Custom Length	Available
Custom Interface	Available
Machine Compatibility	According to Confirmed Interface Dimensions

Function and Working Principle

The blankholder is an essential part of a flexible panel bender tooling system. During the bending cycle, the sheet metal is positioned between the upper blankholder and the lower counterblade.

The blankholder then moves toward the sheet and applies controlled clamping force. This secures the material along the required bending line before the upper or lower bending blade begins its forming movement.

Its principal functions include:

Clamping the sheet securely from above
Working with the counterblade to establish the bending line
Preventing unwanted sheet movement during forming
Supporting accurate positioning of the projecting flange
Maintaining consistent reference geometry
Transmitting clamping force uniformly along the working length
Providing clearance for upper and lower blade movements
Helping improve bend-position repeatability

The blankholder itself does not perform the main flange-forming movement. Actual bending is completed by the upper and lower bending blades.

Complete Panel Bender Tooling System

This upper blankholder works as part of a coordinated panel bender tooling system that includes:

Component	Main Function
Blankholder Tool	Clamps the sheet from above
Counterblade	Supports the sheet from below
Upper Bending Blade	Produces controlled downward bends
Lower Bending Blade	Produces controlled upward bends
Special Panel Bender Tools	Provide clearance or support special applications

The coordinated movement of these tools allows a flexible panel bender to produce positive and negative bends without using a conventional press brake punch-and-V-die arrangement.

Connection and Clamping Structure

The upper connection section has a 97 mm outer block width and a 62 mm internal clamping opening. This geometry is designed to connect the blankholder securely to the corresponding machine mounting or clamping component.

Accurate machining of this interface is important for:

Reliable tool retention
Correct installation height
Consistent vertical positioning
Accurate alignment across the working length
Stable clamping-force transmission
Reduced movement during repeated cycles
Efficient replacement and maintenance

Because different panel bending machines may use different interface dimensions, mounting compatibility should be confirmed using an original drawing or tool sample.

Offset Working Profile

The lower section incorporates an offset profile that positions the working contact surface relative to the bending line while providing clearance for the sheet flange and bending blades.

This profile can influence:

Available flange clearance
Maximum panel depth
Tool-to-workpiece interference
Position of the clamping line
Available space for upper and lower blade movements
Suitability for box-shaped or multi-sided components

WYS Machinery can adjust the blankholder profile according to the customer’s machine structure and finished workpiece drawing.

Continuous 1000mm Construction

The standard length of this blankholder is 1000 mm. Its continuous construction provides a uniform working and clamping surface along the complete tool length.

For long continuous tooling, important quality factors include:

Tool straightness
Parallelism of functional surfaces
Consistent heat-treatment results
Stable interface dimensions
Uniform working height
Accurate alignment after installation

Alternative lengths and segmented configurations can be manufactured when required by the machine or workpiece.

42CrMo Material and Heat Treatment

The blankholder is manufactured from 42CrMo alloy steel, which provides a reliable combination of mechanical strength, toughness and resistance to repeated clamping loads.

The complete tool undergoes overall quenching and through-hardening to HRC46–52. Controlled heat treatment helps provide:

Consistent hardness throughout the tool
Reliable structural strength
Resistance to deformation under repeated clamping force
Improved wear resistance on working surfaces
Stable geometry during industrial operation
A suitable balance between hardness and toughness

Critical mounting, connection and working surfaces are machined according to the confirmed dimensional requirements.

Typical Applications

This panel bender blankholder can support the production of sheet metal components for:

Electrical cabinets and control enclosures
Switchgear cabinets
Elevator panels
Metal doors and door frames
HVAC and ventilation equipment
Storage cabinets and shelving
Industrial equipment covers
Stainless steel kitchen equipment
Appliance housings
Metal furniture components
Lighting enclosures
Server and communication cabinets
Box-shaped sheet metal components
Multi-sided panels
Customized precision sheet metal products

Actual application capability depends on the panel bender model, sheet material, material thickness, workpiece geometry and complete tooling configuration.

Product Details and Manufacturing Quality

Each blankholder tool can be manufactured according to an original technical drawing, physical sample or confirmed machine-interface data.

The manufacturing and inspection process may include:

42CrMo raw-material verification
CNC profile machining
Connection-interface machining
Clamping-opening machining
Controlled overall quenching
Through-hardening
Precision machining after heat treatment
Overall-height inspection
Width and opening-size verification
Straightness inspection
Parallelism inspection
Interface-position inspection
Working-profile inspection
Final dimensional and visual inspection

For a continuous 1000 mm tool, straightness, parallelism and consistent working height are particularly important for uniform sheet clamping.

Replacement Panel Bender Blankholder Tools

This product can be supplied as a replacement blankholder, upper clamping tool or hold-down tool for flexible panel benders with a matching installation interface.

To confirm compatibility, customers are encouraged to provide:

Machine brand and model
Original blankholder drawing
Machine-interface drawing
Existing tool dimensions
Physical tooling sample
Installation photographs
Required working length
Workpiece drawings

Machine compatibility should be determined from the actual profile and interface rather than assumed from the equipment brand alone.

Standard and Custom Panel Bender Tooling

WYS Machinery manufactures standard and customized tooling for flexible panel benders and CNC panel bending centers, including:

Blankholder tools
Upper clamping tools
Blankholder segments
Upper bending blades
Lower bending blades
Counterblades
Special panel bender tools
Custom replacement tooling

Available customization options include:

Overall tool height
Maximum width
Connection block dimensions
Clamping opening width
Working contact profile
Overall length
Continuous or segmented construction
Installation interface
Heat-treatment requirements
Surface treatment
Special clearance geometry

Customers can send original tool drawings, worn tooling samples or finished sheet metal product drawings. WYS provides free tooling evaluation and design support to help develop a suitable panel bender tooling solution.

Why Choose WYS Panel Bender Tooling

Tooling manufactured from drawings or physical samples
High-strength 42CrMo alloy steel construction
Controlled overall quenching and through-hardening
Precision-machined mounting and clamping interfaces
Custom continuous and segmented tool lengths
Replacement blankholders for flexible panel benders
Custom upper clamping and hold-down tools
Tooling design and application support
Dimensional inspection before delivery
Customized packaging for long industrial tooling

Frequently Asked Questions

What is a blankholder tool on a panel bender?

A blankholder tool is the upper clamping component that secures the sheet against the counterblade and establishes a stable bending line before the bending blades begin forming the flange.

Is a blankholder the same as an upper bending blade?

No. The blankholder clamps and positions the sheet. The upper bending blade moves against the projecting flange to perform a downward bend.

What is the difference between a blankholder and a counterblade?

The blankholder clamps the sheet from above, while the counterblade supports it from below. Together they secure the sheet along the bending line.

Why is it also called an upper clamping tool?

“Upper clamping tool” describes its position and function. In some panel bending systems, similar components may also be described as hold-down tools or upper beam tools.

What is the clamping opening width?

This model has a 62 mm clamping opening and a 97 mm outer connection block width.

What material and hardness are used?

The tool is manufactured from 42CrMo alloy steel, overall quenched and through-hardened to HRC46–52.

Can the 1000 mm tool length be customized?

Yes. The length, height, width, opening, connection interface and working profile can be customized according to customer drawings or samples.

Can this blankholder be produced in segments?

Yes. Continuous and segmented blankholder tools can be manufactured according to the machine configuration and workpiece requirements.

How is machine compatibility confirmed?

Compatibility is confirmed by comparing the connection interface, installation height, clamping opening and working profile with the original tooling or machine drawing.

Blankholder Tools

261mm Panel Bender Blankholder Tool with 62mm Clamping Opening