Korloy SPMT15M510-PD PC5300 Ultra-Large U-Drill PVD Insert (10pcs)
30-Day Free Returns
Free Worldwide Shipping
The Original Korloy SPMT15M510-PD PC5300 is the ultimate Heavy-Duty Square Indexable Insert for large-scale industrial drilling and milling. This 15mm massive insert is powered by the legendary PC5300 PVD Grade, providing unmatched edge toughness and reliability. It is specifically engineered to conquer Stainless Steel (M-Group), Heat-Resistant Alloys (S-Group), and extremely unstable heavy-machining environments where CVD inserts are prone to shattering.
The Stability King: For drills over 60mm, the torque and axial pressure are immense. PC5300 is the primary choice for the inner pocket in steel drilling, or for both pockets in stainless steel drilling, to prevent the sudden fracturing caused by work-hardening or low-speed center impact.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Designation | SPMT15M510-PD |
| Corner Radius (r) | 1.0 mm (Extreme Duty) |
| Thickness | 5.56 mm (Ultra-Thick) |
| Grade | PC5300 (Premium Universal PVD) |
Core Performance Benefits:
- High Impact Toughness: The specialized PVD coating allows the sharp cutting edge to withstand the high-torque vibrations of 60mm+ drills.
- Universal Compatibility: Efficiently machines Stainless Steel, Duplex, Titanium, and Alloy Steel with a single insert type.
- Reinforced M5 Geometry: At 5.56mm thick, this insert resists the crushing forces of deep-hole drilling (3D/4D) in heavy forgings.
- Advanced Chip Control: The PD chipbreaker is optimized for wide, heavy chips, ensuring they break and flush out through giant drill flutes without clogging.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn/fz) |
|---|---|---|
| Stainless Steel (316/Duplex) | 50 - 110 m/min | 0.10 - 0.22 mm/rev |
| Alloy Steel / Forged Steel | 80 - 160 m/min | 0.12 - 0.25 mm/rev |
| Titanium / Inconel | 20 - 45 m/min | 0.08 - 0.15 mm/rev |
Compatible Giant Tooling Systems:
Precision-matched for heavy industrial holders:
- Extra-Large U-Drills: King Drill (60mm - 80mm Range)
- Heavy Face Milling: Modular Milling Heads for SPMT15M5
Machinist Tip: The "Safety First" Giant
Optimizing the SPMT15M510 PC5300 for heavy industrial cycles:
Anti-Chipping. In giant drills, the center speed is extremely slow, leading to "built-up edge" and impact. PC5300's PVD coating is mandatory for the inner pocket to prevent the drill body from being damaged by a broken insert.
Outer Speed. If drilling massive amounts of Carbon Steel, use PC3500 for the outer pocket to handle the heat. But for Stainless or tough Alloys, stay with PC5300 for both pockets.
Pro Advice: When using an 80mm U-drill, machine horsepower is everything. If you hear a deep "rumble," your machine might be under-powered for the feed rate. Reduce the feed rate slightly but maintain high coolant volume to protect the R1.0 edges.
Packaging: 10 pieces per box.
Korloy SPMT15M510-PD for stainless steel flange drilling, SPMT 15M510-PD technical drawings, best insert for drilling Inconel with U-drill, large indexable drill insert for 70mm holes, PC5300 vs PC3500 for giant scale machining