Bernardo HA 220 x 6 Lower Cutter Knife Set is a professional cutting tool available on Krollit, an official Bernardo distributor since 2007.
- Vendor: Bernardo
- Model: HA 220 x 6 Lower Cutter Knife Set
- Official Bernardo distributor since 2007
- Shipping from Krollit warehouse
Who uses the HA 220 x 6 Lower Cutter Knife Set and for what
Mechanical workshops and tool shops use the HA 220 x 6 Lower Cutter Knife Set for cutting, drilling, or sharpening operations on materials compatible with the tool's geometry.
Its place in the Bernardo range
Bernardo HA 220 x 6 Lower Cutter Knife Set is part of the Bernardo cutting tool range, distributed in Italy by Krollit since 2007. The Bernardo range includes models of various categories and performance levels: 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 business 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 HA 220 x 6 Lower Cutter Knife Set for?
The HA 220 x 6 lower cutter knife set is recommended for the following professional profiles:
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Mechanical workshops and tool shops: cutting and sharpening operations on compatible materials.
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Users with compatible machines: replacement part 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 lower blade of the HA 220 do?
The lower blade is fixed to the work surface and supports the sheet metal during cutting, opposing the moving upper blade.
Wear is symmetrical with the upper blade, but the lower blade tends to deform under the weight of the sheet metal during intensive processing. Replace both simultaneously to standardize cutting pressure.
What does the HA 220 process?
It is a manual angle punching machine for angles up to 220 x 220 mm. Greater angle processing capacity compared to the HA 200.
Suitable for metal fabrication shops 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.
Heat treatment increases surface hardness (typically 58-62 HRC) and resistance to deformation, even when cutting alloyed steels or thick aluminum.
When should knives be replaced for intensive use?
For continuous use (8 hours/day), a review every 6 months and preventive replacement every 12-18 months are recommended.
Wear indicators: cutting with burrs, sheet edge deformation, altered cutting noise, excessive effort during operation. Keep a spare set in stock.
How is manual replacement performed?
For manual shears and notchers, replacement can be performed by the operator: removing fixing screws, disassembling the old knife, mounting the new one with the correct tightening torque.
Important: observe 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.
