ZCC.CT KNUX160405R11 YBM251 turning inserts for Stainless Steel
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💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
ZCC.CT KNUX160405R11 YBM251 Turning Insert
Universal Stainless Steel Grade for Medium-Speed Efficiency
Product Overview
The ZCC.CT KNUX160405R11 in YBM251 grade is the "workhorse" of the stainless steel turning world. Designed for the ISO M20-M30 range, this insert features an advanced CVD multi-layer coating that specifically combats the work-hardening tendencies of stainless steel. The R11 chipbreaker geometry is engineered for aggressive chip evacuation at medium feeds, reducing heat buildup and preventing "bird-nesting" that can damage both the tool and the workpiece.
Key Advantages
- ✔ Versatile YBM251 Grade: Balances hard wear resistance with the toughness needed for light interruptions.
- ✔ Advanced CVD Coating: Thick coating layer provides excellent chemical stability and heat resistance.
- ✔ R11 Geometry: Optimized for Right-Hand cutting with superior chip control in ductile materials.
Technical Specifications
Decoding KNUX160405R11
Shape
Clearance
Tolerance
Special
Length
Thickness
Right/Chip
| Feature | Metric (mm) | Imperial (ANSI) |
|---|---|---|
| Cutting Edge Length (L) | 16.5 mm | KNUX 43-R11 |
| Thickness (S) | 4.76 mm | 0.187 in |
| Nose Radius (r) | 0.5 mm | 0.020 in |
Recommended Cutting Data
| Material Group | Speed (Vc) | Feed (fn) |
|---|---|---|
| Stainless (304/316) | 140 - 240 m/min | 0.12 - 0.35 mm/rev |
| Heat-Resistant Alloys | 40 - 80 m/min | 0.10 - 0.25 mm/rev |
Application Scope
- Automotive valve components.
- Chemical industry flanges & piping.
- General purpose stainless steel turning.
- Suitable for M20-M30 semi-finishing.
System Compatibility
- Fits all CNC Lathe ISO turrets.
- Optimized for Right-Hand Tool Blocks.
- Compatible with standard CVD tool cooling systems.
ZCC.CT Grade Choice for Stainless
| Grade | M-Range | Best Use Case |
|---|---|---|
| YBM251 (This) | M20 - M30 | General Purpose / Balanced |
| YBM351 | M30 - M40 | Heavy Roughing / Interrupted |
Trusted Globally by CNC Shops
⭐⭐⭐⭐⭐
"The YBM251 is my go-to for job shop work. It handles almost any stainless steel grade we throw at it."
— Mark P., USA 🇺🇸⭐⭐⭐⭐⭐
"Sehr zuverlässig. Die Standzeit beim Drehen von 1.4404 ist hervorragend."
— Dieter F., Germany 🇩🇪⭐⭐⭐⭐⭐
"Excellent finish on SS316 parts. R11 geometry clears chips perfectly."
— Stefano R., Italy 🇮🇹⭐⭐⭐⭐
"Good performance for the price. Very consistent results in mass production."
— Kenji T., Japan 🇯🇵Frequently Asked Questions
Q: Why choose YBM251 over YBM351?
A: YBM251 has higher wear resistance and is better for continuous cutting at higher speeds. YBM351 is tougher and better for roughing or heavy impact.
Q: Does the "R" mean it only works for right-hand tools?
A: Yes, "R" is for Right-Hand. This insert must be used with a matching right-hand tool holder for the chipbreaker to function correctly.
Q: Is this insert suitable for dry cutting stainless?
A: While the CVD coating can handle heat, we always recommend using high-pressure coolant with stainless steel to prevent work hardening and BUE.
Industrial Tech Tip: When machining austenitic stainless steel, always ensure your depth of cut (Ap) is greater than the nose radius of the insert to stay beneath the work-hardened surface layer.
Need Help With ZCC.CT Inserts?
Looking for a ZCC.CT equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This ZCC.CT insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.