Korloy WCMT030208-C20N PC5335 U-Drill Insert for Steel & Stainless (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy WCMT030208-C20N PC5335 (ANSI: WCMT 1.81.52) is a high-performance Indexable Drill Insert designed for General Purpose Shallow Hole Machining (U-Drills). Utilizing the versatile PC5335 PVD Grade, this insert provides an exceptional balance of toughness and wear resistance. The C20N Chipbreaker is specifically engineered to control chip formation in ductile materials, ensuring smooth evacuation and preventing damage to the drill body during high-feed operations.
The Drilling Specialist: PC5335 is Korloy's premier grade for drilling applications. Its specialized PVD coating is designed to handle the variable cutting speeds across the insert's edge, offering superior resistance to thermal cracking and mechanical shock.
Technical Specifications (Metric & ANSI):
| ISO Designation | WCMT 030208-C20N |
| ANSI Designation | WCMT 1.81.52 |
| Thickness (S) | 2.38 mm |
| Corner Radius (r) | 0.8 mm |
| Grade | PC5335 (Tough PVD Coated) |
| Target Materials | Steel (P), Stainless Steel (M), Cast Iron (K) |
Core Performance Benefits:
- Extreme Versatility: PC5335 grade excels in multiple material groups, making it the ideal "one-grade" solution for shops dealing with varied jobs in steel and stainless.
- Impact-Resistant PVD Coating: The TiAlN-based coating is optimized for the interrupted-cut nature of drill entry and exit, preventing premature chipping.
- Optimized C20N Geometry: Specifically designed for chip curling. It forces chips into a compact "C" shape, which is easily flushed out by coolant through the drill's internal channels.
- Stable Tool Life: High resistance to crater wear and plastic deformation ensures consistent hole diameters over long production runs.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Low Carbon Steel | 120 - 220 m/min | 0.06 - 0.15 mm/rev |
| Stainless Steel (304/316) | 100 - 180 m/min | 0.05 - 0.12 mm/rev |
Pro Tip: Successful U-Drilling
Internal coolant is mandatory for WCMT inserts. High pressure is required to flush the compact chips out of the hole. Lack of pressure is the #1 cause of insert breakage in drilling.
WCMT 03 inserts are usually the peripheral (outer) inserts. Ensure your grade selection (PC5335) matches the higher surface speeds encountered on the outer diameter of the drill.
Packaging: 10 pieces per box.
WCMT030208-C20N Korloy PC5335, indexable drill inserts for stainless, Korloy PC5335 grade properties, WCMT inserts for U-drills, high speed shallow hole drilling, C20N chipbreaker specs
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.