Korloy WCMT050308-C20N PC5335 Heavy-Duty 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 WCMT050308-C20N PC5335 (ANSI: WCMT 32.52) is a robust Indexable Drill Insert engineered for Large-Diameter Shallow Hole Machining. Designed for drills typically ranging from D25mm to D33mm, the WCMT 05 offers an increased thickness of 3.18mm to withstand the massive cutting forces generated during large-scale drilling. Featuring the PC5335 PVD Grade and C20N Chipbreaker, this insert ensures stable, high-efficiency production in both carbon steel and challenging stainless steel alloys.
Maximum Rigidity: In large-diameter drilling, vibration and heat are your biggest enemies. The WCMT 05's beefier profile combined with PC5335's heat-resistant PVD coating provides the structural integrity needed to maintain tight hole tolerances in heavy industrial applications.
Technical Specifications (Metric & ANSI):
| ISO Designation | WCMT 050308-C20N |
| ANSI Designation | WCMT 32.52 |
| Thickness (S) | 3.18 mm |
| Corner Radius (r) | 0.8 mm |
| Grade | PC5335 (Industrial Toughness PVD) |
| Application Range | Steel (P), Stainless (M), High-Temp Alloys (S) |
Core Performance Benefits:
- Heavy-Duty Construction: The 3.18mm thickness significantly reduces the risk of insert fracturing under high-load, large-diameter drilling conditions.
- Exceptional Thermal Stability: PC5335 grade is specifically formulated to resist the intense heat generated at the outer edge of large drills, preventing premature edge deformation.
- Superior Chip Breaking: The C20N geometry forces thick, tough chips into a tight "C" shape, ensuring they can be flushed out of deep boreholes without scratching the hole wall.
- High ROI 3-Edge Design: Provides three sharp, reliable cutting edges per insert, offering a highly cost-effective alternative to solid carbide tooling for large holes.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Alloy Steel / Mold Steel | 100 - 190 m/min | 0.08 - 0.18 mm/rev |
| Duplex / 316 Stainless | 80 - 150 m/min | 0.06 - 0.15 mm/rev |
Pro Tip: Dominating Large Diameter Holes
Large U-drills using WCMT 05 inserts require significant spindle torque. Ensure your machine has the HP to maintain constant RPM, especially when the drill breaks through the material.
For WCMT 05, coolant volume is as important as pressure. Large holes create large volumes of chips; you need a massive flow to ensure they are carried out effectively.
Packaging: 10 pieces per box.
WCMT050308-C20N Korloy PC5335 price, WCMT 32.52 ANSI equivalent, indexable inserts for 30mm U-drill, heavy duty stainless steel drilling, Korloy PC5335 for large hole drilling, C20N chip control for big drills
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.