Frequently asked Questions (FAQ)
Which material is best suited for cutting paper?
Over 95% of paper-cutting applications utilize High-Speed Steel (HSS), powder-metallurgical steel (ASP), or tungsten carbide. The ideal choice depends on your specific machine setup and run rate, which our engineers can help you select.
How can we significantly increase the service life of our circular knives?
Maximizing the lifespan of circular blades requires a holistic technical approach. Service life depends on matching seven core parameters to your specific production line: steel grade selection, specialized heat treatment, controlled surface roughness and coatings, minimal axial runout, minimal radial runout, tailored cutting geometry, and tight manufacturing tolerances.
How do material selection and heat treatment affect circular blade durability?
The base material, whether tool steel, High-Speed Steel (HSS), powder-metallurgical steel, or tungsten carbide must be chosen based on the material being cut, line speed, and mechanical load. Heat treatment then determines the crucial balance between edge hardness and material toughness. Incorrect heat treatment leads to premature edge wear, chipping, or catastrophic blade failure.
How do surface finish and specialized coatings reduce circular knife wear?
Controlling surface roughness lowers cutting resistance and prevents material adhesion on the sides of the blade. For high-wear or sticky applications, applying specialized surface coatings, such as Titanium Nitride (TiN), TiAlN, Diamond-Like Carbon (DLC), Chromium Nitride (CrN), or PTFE (Teflon), dramatically increases edge hardness, reduces friction, and extends operating life.
Why are axial and radial runout critical for circular knife longevity?
Runout creates destructive instability during high-speed rotation. Axial runout causes side-to-side wobble, leading to uneven edge wear and structural stress. Radial runout causes vertical up-and-down movement, preventing consistent material contact. Keeping both runouts to near-zero tolerances ensures smooth rotation, uniform wear, and cleaner cuts.
What role do cutting geometry and tight tolerances play in blade performance?
Bevel angles and edge geometries must be engineered specifically for the resistance profile of your target material to minimize cutting stress. Maintaining strict manufacturing tolerances guarantees precise blade alignment on your slitting arbors. At Herbertz, we analyze your specific cutting process to engineer the exact combination of geometry, steel, and tolerances for your machines.
What is the typical delivery time for custom-made machine knives?
The average delivery time for custom-manufactured machine knives—including circular, roll shear, straight, shear, and band knives, is approximately 6 to 8 weeks. The exact timeframe depends on the required steel alloy, knife dimensions, order quantity, and specialized finishing steps.
Are any machine knives available for immediate shipment?
Yes. Standard machine knives that are held in stock can typically be processed and shipped within 1 to 2 working days.
How is the delivery timeline for custom machine knives calculated?
Total lead time is generally divided into two main phases:
50% Pre-Production & Metallurgy: Sourcing raw materials, specialized heat treatment, and applying surface coatings.
50% In-House Manufacturing: Multi-axis CNC machining, precision grinding, and quality inspection.
Why does raw material procurement affect custom blade lead times?
Sourcing specialized raw materials requires securing the exact steel grade and dimensional stock suited for your machine application. This precise sourcing guarantees optimal blade performance and longevity while minimizing material waste during production.
Can you deliver custom industrial blades within 1 to 2 business days?
Yes. Under a safety stock agreement, we store your custom blades in our warehouse for immediate dispatch within 24–48 hours, completely eliminating production lead times.
Can I become an agent or distributor for Herbertz industrial knives?
Yes. We actively partner with global sales agents and distributors to deliver local, native-language support and on-site technical expertise to our international customers.
How do industrial blade coatings extend machine knife lifespan?
Coatings such as Titanium Nitride (TiN), TiAlN, Diamond-Like Carbon (DLC), CrN, and PTFE are advanced metallurgical surface treatments engineered to protect cutting edges from abrasive materials. By significantly increasing wear resistance, coated blades typically extend operational life by 3 to 5 times, and up to 10 times in specific high-wear applications.
How do blade coatings improve cutting quality and prevent material buildup?
Coatings lower the blade’s coefficient of friction, which reduces heat generation, eliminates blade drag, and prevents glue or resin adhesives from sticking to the steel. This produces clean, burr-free cuts with minimal dust formation across paper, plastic film, metal foil, and synthetic materials.
How do coated industrial blades improve Overall Equipment Effectiveness ?
Because coated blades maintain their sharp cutting edges significantly longer, production lines require fewer blade changes. This drastically reduces machine downtime, lowers maintenance costs, and maximizes throughput across slitting, converting, and packaging operations.
Can Herbertz manufacture complex or custom-shaped industrial blades?
Yes. Using advanced multi-axis CNC machining and precision grinding, we fabricate custom machine knives in virtually any profile. Working from CAD drawings or physical samples, we customize steel grades, bevel geometries, coatings, and tolerances to your exact specs.
Can you manufacture circular blades based on technical drawings or samples?
Yes, we manufacture circular blades based on your drawings, CAD data, or provided samples.
What advantage does a TiAlN or DLC coating offer on circular knives?
Coating a circular blade with TiAlN (Titanium Aluminum Nitride) or DLC (Diamond-Like Carbon) increases the surface hardness of a circular blade and reduces its coefficient of friction. As a result, tool life can be improved, and adhesion of the cut material can be prevented.
Which material is used to manufacture fish processing circular knives?
For fish processing circular blades, we use the material 1.4112, whose rust-resistant properties are significantly improved once again through electropolishing.
Is there a minimum order quantity?
The minimum order quantity depends on the specific product and the desired specifications. We will gladly inform you about the quantities applicable to your order right away in our quote.
How long does delivery take?
The delivery time depends on the product, the order quantity, and the current order volume. You will receive a binding delivery date along with our order confirmation.
What documents do you need to generate a quote?
accurate information possible regarding the product, dimensions, material, quantity, and desired specifications. Technical drawings or samples help us calculate your project faster and more accurately.
Can I receive a sample or prototype before ordering?
We offer samples or prototyping for many of our products. This allows you to check the material, workmanship, and quality before placing a bulk order.
Do you create custom quotes for businesses?
Yes. We create tailored quotes designed to meet your specific needs, quantities, and requirements. Simply reach out to us, we are happy to advise you personally.
