173mm R3 Upper Bending Blade for Flexible Panel Bender

The 173mm R3 Upper Bending Blade is a precision working tool designed for flexible panel benders and CNC panel bending centers. Installed in the upper bending position, the blade contacts the projecting edge of the sheet and follows the machine-controlled bending trajectory to form accurate sheet metal panels and profiles.

This panel bender upper blade has an overall height of 173 mm, a maximum tool width of 40 mm and a reduced lower section measuring 25 mm wide. Its precision-machined R3 working edge provides controlled contact with the sheet during the bending cycle. The standard blade length is 1000 mm, making it suitable for continuous working-length installations and replacement tooling projects.

Manufactured from 42CrMo alloy steel, the blade receives overall quenching and through-hardening to HRC46–52. This combination provides the strength, toughness and wear resistance required for repeated industrial panel bending operations.

The upper bending blade works together with the blankholder, counterblade and lower bending blade. Depending on the panel bender configuration and programmed tool trajectory, it is typically used to perform controlled downward bending without requiring a conventional press brake punch-and-V-die combination.

WYS Machinery can manufacture standard and customized upper bending blades according to original tooling drawings, physical samples, machine-interface dimensions or customer workpiece requirements.

Key Features

• Precision upper bending blade for flexible panel benders
• Overall height of 173 mm
• Maximum tool width of 40 mm
• Reduced lower section width of 25 mm
• Precision-machined R3 working radius
• Standard continuous length of 1000 mm
• Manufactured from 42CrMo alloy steel
• Overall quenched and through-hardened
• Finished hardness of HRC46–52
• Multiple mounting holes for stable installation and alignment
• Reduced lower profile provides clearance near the bending area
• Suitable for replacement and customized panel bender tooling
• Custom dimensions, working radii and mounting interfaces available

Technical Specifications

Function and Working Principle

During the panel bending cycle, the blankholder and counterblade clamp and support the sheet metal along the programmed bending line. The upper bending blade then contacts the projecting flange and moves along a controlled trajectory to form the required bend.

The complete panel bender tooling system generally includes:

• Blankholder tools for clamping the sheet
• Counterblades for lower support and positioning
• Upper bending blades for controlled upper-side bending
• Lower bending blades for controlled lower-side bending
• Special panel bender tools for complex profiles and clearance requirements

Unlike conventional press brake tooling, a flexible panel bender does not normally form the sheet between a punch and a V-die. Its upper and lower bending blades follow programmed movements while the main panel remains supported and positioned by the machine.

R3 Working Edge

The R3 rounded working edge provides stable and controlled contact between the upper blade and the sheet metal. Its precision-machined profile helps distribute contact pressure smoothly along the bending line and supports consistent forming across the working length.

The appropriate working radius depends on the sheet material, material thickness, required bend geometry and panel bender program. Alternative blade radii can be manufactured according to customer drawings and application requirements.

42CrMo Material and Heat Treatment

42CrMo alloy steel is selected for its combination of mechanical strength, toughness and resistance to repeated working loads. The complete upper bending blade is overall quenched and through-hardened to HRC46–52.

Controlled heat treatment helps provide:

• Consistent hardness throughout the blade
• Improved resistance to working-edge wear
• Reliable strength under repeated bending cycles
• Dimensional stability during industrial operation
• A suitable balance between hardness and toughness

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

Typical Applications

This upper bending blade can be used to manufacture a wide range of sheet metal panels, enclosures and profiles, including:

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

Actual application capability depends on the panel bender model, mounting interface, material, sheet thickness, workpiece geometry and programmed bending sequence.

Manufacturing Quality

Each panel bender upper blade can be manufactured according to a confirmed technical drawing or original tooling sample. The production and inspection process may include:

• Raw-material verification
• CNC profile machining
• Precision mounting-hole machining
• Controlled overall quenching
• Through-hardening
• Working-edge machining
• R3 radius inspection
• Height and width verification
• Mounting-hole position inspection
• Straightness and parallelism inspection
• Final dimensional and visual inspection

Accurate working geometry and mounting-hole positioning help maintain consistent alignment along the complete 1000 mm blade length.

Replacement Upper Bending Blades

This product can be supplied as a replacement upper blade for flexible panel benders and automated sheet metal bending centers with a matching interface.

Because different panel bending machines may use different mounting holes, profiles and installation dimensions, compatibility should be confirmed using:

• Machine model and tooling information
• Original upper blade drawing
• Machine-interface drawing
• Existing tooling measurements
• Physical tooling sample
• Clear installation photographs

Machine compatibility should not be determined from the equipment brand alone.

Standard and Custom Panel Bender Tooling

WYS Machinery supplies standard and custom tooling for flexible panel benders and CNC panel bending centers. Customers may provide original tool drawings, worn tooling samples, machine-interface dimensions or finished workpiece drawings.

Available customization options include:

• Overall tool height
• Tool width and reduced section
• Working radius
• Overall length
• Continuous or segmented construction
• Mounting-hole quantity
• Mounting-hole position
• Installation interface
• Working-edge geometry
• Heat-treatment requirements
• Surface treatment
• Special clearance profiles

WYS also provides tooling evaluation and design support. Customers can send their sheet metal product drawings and bending requirements so that a suitable panel bender tooling solution can be developed.

Why Choose WYS Panel Bender Tooling

• Precision tooling manufactured from drawings or samples
• 42CrMo alloy steel construction
• Controlled overall heat treatment
• Customized working radii and tool dimensions
• Custom mounting holes and machine interfaces
• Continuous and segmented tooling options
• Replacement tooling for flexible panel benders
• Tooling design and application support
• Dimensional inspection before delivery
• Custom packaging according to tool size and shipping requirements

Frequently Asked Questions

What is an upper bending blade for a panel bender?

An upper bending blade is the working tool installed in the upper bending position of a flexible panel bender. It contacts the projecting sheet edge and follows a programmed movement to produce the required bend.

Is an upper bending blade the same as a press brake punch?

No. A press brake normally bends sheet metal between an upper punch and a lower V-die. A flexible panel bender uses a blankholder, counterblade and controlled upper and lower bending blades.

What is the working radius of this blade?

This upper bending blade has a precision-machined R3 working radius. Alternative radii can be manufactured according to the sheet material, workpiece geometry and customer requirements.

What material is used for this panel bender blade?

The blade is manufactured from 42CrMo alloy steel and through-hardened to HRC46–52.

Can the 1000 mm blade length be customized?

Yes. Blade length, height, width, working radius, mounting holes and installation interface can be customized according to drawings or original samples.

How is machine compatibility confirmed?

Compatibility is confirmed by checking the blade profile, mounting interface, hole pattern and critical dimensions. Providing an original tooling drawing or physical sample is recommended.

Product Summary

The WYS 173mm R3 Upper Bending Blade is a precision replacement tool for flexible panel benders and CNC panel bending centers. It measures 173 mm in height, 40 mm in maximum width and 1000 mm in standard length, with a reduced 25 mm lower section and an R3 working edge. The blade is manufactured from 42CrMo alloy steel, overall quenched and through-hardened to HRC46–52. WYS can customize the length, radius, mounting holes and machine interface according to original tooling drawings or physical samples.