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Model No.: HNKM60603
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250mm Electroplated Cutting Blade – for Automotive Sealing Strip Cutting
| Parameter | Value |
|---|---|
| Outer Diameter (OD) | 250 mm |
| Thickness | 1.8 mm |
| Bore / Arbor Hole (ID) | 50 mm |
| Blade Body Material | High-Speed Steel (HSS) |
| Coating | Titanium Nitride (TiN) – gold color |
| Tooth Design | Alternate / staggered tooth (raker set / wavy set) |
| Abrasive Type | Electroplated diamond / CBN (specify based on application) |
| Application | Cutting automotive rubber sealing strips |
| Target Material | EPDM rubber, silicone rubber, PVC, thermoplastic elastomers (TPE), rubber profiles |
This 250mm electroplated cutting blade is specially designed for high-speed, clean cutting of automotive rubber sealing strips. The blade features a high-speed steel (HSS) body with a titanium nitride (TiN) coating for reduced friction and extended blade life.
The alternate (staggered) tooth design creates a "raker set" or "wavy set" configuration, which significantly reduces cutting resistance and provides faster, cleaner cuts through rubber and elastomeric materials – without tearing or leaving rough edges.
| Feature | Benefit |
|---|---|
| HSS blade body | Strong, durable, resists bending during cutting |
| TiN coating (gold) | Reduces friction, prevents rubber sticking, extends blade life |
| Alternate tooth design | Staggered teeth create chip clearance – cuts faster, reduces heat |
| Electroplated diamond/CBN edge | Sharp, consistent cutting edge for clean rubber cuts |
| 1.8mm thickness | Thin kerf – reduces material waste, cuts cleanly |
| 250mm diameter | Covers standard sealing strip profiles |
| 50mm bore | Fits common cutting machine spindles |
Unlike straight-tooth blades, alternate/staggered tooth blades have teeth that are bent left and right alternately.
| Tooth Type | Configuration | Cutting Action | Best For |
|---|---|---|---|
| Alternate / staggered (this blade) | Teeth bent left-right alternately | Low friction, chip clearance | Rubber, plastic, soft materials |
| Straight tooth | All teeth in line | High friction, heat buildup | Hard materials, metal |
| Wavy set | Teeth in wavy pattern | Medium friction | General purpose |
| Challenge with Rubber | How Alternate Teeth Solve It |
|---|---|
| Rubber is soft and flexible | Staggered teeth create a "shearing" action – cleaner cut |
| Rubber tends to tear | Teeth enter material at different points – reduces tearing |
| Friction generates heat | Less tooth contact = less friction = cooler cutting |
| Chips (rubber dust) can clog | Staggered teeth create space for chip evacuation |
| Blade can bind in material | Reduced contact prevents binding |
Result: Faster, cleaner, cooler cutting – with minimal edge tearing or fuzzing.
Titanium Nitride (TiN) coating is a hard, low-friction ceramic coating applied to the blade body.
| Property | Value | Benefit for Rubber Cutting |
|---|---|---|
| Color | Gold | Easy to identify |
| Hardness | ~2,300 HV | Resists wear, extends blade life |
| Coefficient of friction | Very low | Rubber slides off – no sticking |
| Corrosion resistance | High | Withstands rubber chemicals |
| Operating temperature | Up to 600°C | Handles friction heat |
| Problem | TiN Solution |
|---|---|
| Rubber sticks to blade | Low-friction coating prevents adhesion |
| Blade wears from abrasive fillers | Hard coating protects blade body |
| Friction heat builds up | Coating reduces friction |
| Blade rusts from rubber chemicals | Corrosion-resistant coating |
High-Speed Steel (HSS) is used for the blade body because of its excellent combination of properties.
| Property | Benefit |
|---|---|
| High hardness (HRC 62-65) | Blade body resists deformation during cutting |
| Toughness | Won't crack or chip under impact |
| Wear resistance | Long blade life |
| Heat resistance | Maintains hardness at elevated temperatures |
| Good fatigue strength | Withstands repeated cutting cycles |
HSS is the ideal body material for rubber cutting blades – harder than carbon steel, tougher than carbide.
The cutting edge features electroplated diamond or CBN abrasive, depending on the specific rubber formulation.
| Rubber Type | Recommended Abrasive | Why |
|---|---|---|
| Pure rubber (EPDM, natural rubber) | Diamond | Sharpest cutting edge |
| Rubber with silica/carbon black filler | Diamond | Fillers are abrasive; diamond handles them |
| Rubber with fiber reinforcement | Diamond/CBN | Both work; diamond preferred |
| Rubber on steel/fabric backing | CBN | CBN is stable with ferrous materials |
| Bond Type | Sharpness | Suitability for Rubber |
|---|---|---|
| Electroplated | Very sharp | Excellent – thin kerf, clean cut |
| Sintered | Moderate | Acceptable – but thicker kerf |
| Brazed | Very sharp | Good – but more expensive |
For thin, clean cuts in rubber sealing strips, electroplated diamond/CBN is the preferred choice.
| Sealing Strip Type | Location on Vehicle |
|---|---|
| Door seals | Around car doors |
| Trunk seals | Around trunk/boot lid |
| Hood seals | Under engine hood |
| Window weatherstrips | Around side windows |
| Roof ditch moldings | Roof panel joints |
| Sunroof seals | Around sunroof opening |
| Material | Suitability |
|---|---|
| EPDM rubber | ⭐⭐⭐⭐⭐ Excellent |
| Silicone rubber | ⭐⭐⭐⭐⭐ Excellent |
| PVC profiles | ⭐⭐⭐⭐⭐ Excellent |
| TPE (thermoplastic elastomers) | ⭐⭐⭐⭐⭐ Excellent |
| Sponge rubber | ⭐⭐⭐⭐ Good (may need finer grit) |
| Foam rubber | ⭐⭐⭐⭐ Good |
| Rubber with fabric backing | ⭐⭐⭐⭐ Good |
| Parameter | Value |
|---|---|
| Outer Diameter | 250 mm |
| Thickness | 1.8 mm |
| Bore | 50 mm |
| Blade body material | High-Speed Steel (HSS) |
| Coating | Titanium Nitride (TiN) – gold |
| Tooth design | Alternate / staggered (raker set) |
| Abrasive | Diamond or CBN (electroplated) |
| Grit size | [Specify – e.g., #60, #80, #100] |
| Max RPM | [Calculate – typically 3,000-4,000 RPM] |
| Application | Automotive rubber sealing strip cutting |
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