The Bernardo top shear knife set for HA 220 x 6 is a cutting tool for professional use, available from Krollit, official Bernardo distributor since 2007.
- Vendor: Bernardo
- Model: Top shear knife set for HA 220 x 6
- Official Bernardo distributor since 2007
- Shipping from Krollit warehouse
Who uses the top shear knife set for HA 220 x 6 and for what
Mechanical workshops and tool laboratories use the top shear knife set for HA 220 x 6 for cutting, drilling, or sharpening operations on materials compatible with the tool's geometry.
Its place in the Bernardo range
The Bernardo top shear knife set for HA 220 x 6 is part of Bernardo's range of cutting tools, distributed in Italy by Krollit since 2007. The Bernardo range includes models of various categories and performances: to choose the right machine for your use case, you can consult the Bernardo catalog on Krollit or contact customer support for selection assistance.
Krollit logistics and support
Shipping within 3-5 working days from Krollit warehouse for spare parts and accessories. Customer support in Italian available for technical documentation and compatibility verification with the reference machine. Krollit has been an official distributor since 2007.
Who is the top shear knife set for HA 220 x 6 for
The top shear knife set for HA 220 x 6 is recommended for the following professional profiles:
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Mechanical workshops and tool laboratories: cutting and sharpening operations on compatible materials.
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Users with compatible machines: replacement or original tool for the indicated machine.
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Out-of-spec materials: check workable material and tool geometry before use.
Frequently Asked Questions
What does the top blade of the HA 220 do?
The top blade is the moving part that descends onto the sheet metal to produce the cut, opposite to the fixed bottom blade.
It is the blade subject to greater wear due to repeated movement. For series production, it should be monitored frequently: anomalous sparks and burr cutting are the first signs of needing sharpening.
What does the HA 220 process?
It is a manual angle notcher for angles up to 220 x 220 mm. Greater angle processing capacity compared to the HA 200.
Suitable for metal fabrication for series production. Regular knife replacement maintains cutting quality on angle profiles.
Are the blades made of hardened steel?
Yes, Bernardo blades are made of high-quality hardened and ground steel.
The heat treatment increases surface hardness (typically 58-62 HRC) and resistance to deformation, even when cutting alloy steels or thick aluminum.
When to replace knives for intensive use?
For continuous use (8 hours/day), a review every 6 months and preventive replacement every 12-18 months are recommended.
Indicators of wear: burr cutting, sheet edge deformation, altered cutting noise, excessive effort during operation. Keep a spare set in stock.
How is replacement done manually?
For manual shears and notchers, replacement can be performed by the operator: removing fastening screws, disassembling the old knife, mounting the new one with the correct tightening torque.
Important: respect the tightening torque indicated in the manual (typically 30-60 Nm). Insufficient tightening causes the knife to move, excessive tightening risks cracking it. Krollit provides technical documentation.
