HSS/TC Three-Knife Trimmer Blade Sets for Müller Martini, Heidelberg & Kolbus
Bookbinding & Trimmer Knives
A complete set of 3 replacement knives (1 Front, 2 Sides) engineered for heavy-duty print finishing. Fully compatible with Müller Martini, Heidelberg, Kolbus, and other major three-knife trimmers. Made of High-Speed Steel (HSS) for unmatched sharpness.
- ■Material: High Speed Steel (HSS / Duritan) or Tungsten Carbide (TC / Widia)
- ■Applications: Three-Knife Trimmers, Saddle Stitchers, Perfect Glue Binders, Folding Machines
■ ISO 9001:2015 Certified
■ In-House Heat Treatment
■ Strict Dimensional Tolerances
■ Global Door-to-Door Delivery
[ Engineering Reference ]
Decisive Specifications
| Compatible Brands | Müller Martini (Merit, Orbit, etc.), Heidelberg, Kolbus |
|---|---|
| Material | High Speed Steel (HSS / Duritan) or Tungsten Carbide (TC / Widia) |
| Applications | Three-Knife Trimmers, Saddle Stitchers, Perfect Glue Binders, Folding Machines |
■ All values verified via CMM inspection · ISO 9001:2015
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Need a Specific Size or OEM Replacement?
Don't see your exact specs? Send us a blueprint, a worn sample, or just your machine model. Our team will review the details and provide a tailored quotation.
[ Standard Reference ]
Common Standard Dimensions
| Compatible Models | Type | Dimensions | Holes |
|---|---|---|---|
| Muller Martini 301, 304, 361 | Front | 540×90×12mm | 12×M10 |
| Muller Martini 301, 304, 361 | Left&Right | 392×90×12mm | 8×M10 |
| Müller Martini 3675 Orbit | Front | 580×115×12mm | 12×M10, 1×Slot |
| Müller Martini 3675 Orbit | Left&Right | 450×115×12mm | 15×M10, 2×Slot |
[ Technical Audit ]
Engineering Advantages
HSS & Tungsten Carbide Options
Manufactured with premium High-Speed Steel (industry equivalent to Duritan) or fine-grain Tungsten Carbide (TC-F), offering exceptional wear resistance and extended sharpening intervals compared to standard Swedish Steel (SS).
Complete 3-Knife Set Integration
Supplied as a complete, ready-to-install set containing 1 Front Knife and 2 Side (Left/Right) Knives. Each blade features exact OEM mounting slots and M10 threaded holes to guarantee zero-downtime installation.
Unmatched Sharpness
Engineered for heavy-duty, trouble-free operation. Delivers flawlessly smooth fore-edges, heads, and tails for commercial magazines, catalogs, and perfect-bound books without spine tearing.
[ System Inventory ]
Related Blade Categories
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[ Knowledge Base ]
Product FAQs & Buying Guidance
Technical FAQs
01Do your trimmer blades fit Kolbus and Müller Martini machines?+−
Yes. Our trimmer blades are reverse-engineered to exact OEM specifications, guaranteeing seamless installation and perfect alignment on all major European and Japanese bookbinding lines.
02Which material delivers the longest life for coated paper?+−
For high-volume cutting of coated or recycled paper, we strongly recommend our Tungsten Carbide (TC) inlaid blades. They deliver up to 5 times the cutting life of standard High-Speed Steel (HSS) blades between sharpenings, drastically reducing your machine downtime.
03How do you prevent blade chipping when cutting thick book blocks?+−
We use a proprietary vacuum heat treatment combined with deep cryogenic processing (−80°C). This relieves internal compressive stresses and creates a highly stable, chip-resistant edge structure that cleanly slices through thick book spines.
04What is the correct installation sequence to prevent binding on a three-knife trimmer set?+−
Binding is usually caused by misaligned entry angles between front and side knives — typically a 0.05–0.10mm mounting face runout error accumulated from mixed-tolerance blade sets. Since all three blades in our set are ground in a single production pass, relative alignment is factory-matched. Install all three blades loosely first, torque-set the front knife to establish the head datum, then alternate the side knives to maintain symmetric clamping pressure.
05What is the lead time for a custom three-knife trimmer set for a machine outside your standard range?+−
For machines outside our standard stock range, we need the blade profile drawing or a reference sample set to reverse-engineer. From confirmed drawing to shipped custom set: 12–15 working days. For volume OEM procurement (10+ sets per order), we maintain customer-specific blade programs with dedicated pre-ground stock, delivering within 5 days from call-off.
Why Choose Sureay
01Are you a trading company or a direct manufacturer?+−
We are a 100% direct OEM manufacturer established in 2008. When you buy from Sureay, you bypass middleman markups and communicate directly with the engineers who forge and grind your blades.
02What makes Sureay's heat treatment different from cheaper alternatives?+−
Unlike standard quenching, every Sureay blade undergoes deep cryogenic treatment after vacuum hardening. This transforms retained austenite into martensite, boosting wear resistance by up to 40% and ensuring uniform hardness across the entire cutting edge.
03Do you ship globally and how long does it take?+−
Yes, we export to over 50 countries. Standard OEM replacement blades typically ship within 48 hours. Custom profiles take 10–15 working days. We partner directly with DHL, FedEx, and international sea freight forwarders for reliable door-to-door delivery.
04What quality certifications does Sureay hold, and can you provide material test reports?+−
Sureay is ISO 9001:2015 certified. Every shipment includes a Rockwell HRC hardness test report, a dimensional inspection record, and a heat treatment batch certificate. For OEM qualification, full CMM dimensional reports and steel mill certificates are available on request.
05Can we trial a sample set before committing to a full production order?+−
Yes. We offer sample sets (typically 2–5 blades) for machine fit verification and edge life testing. Standard sample lead time is 5–7 working days. For custom profiles, dimensional sign-off samples are produced before full production commences — no tooling commitment until fit is confirmed.
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