Korloy SP200 NC3020 2mm Single-Ended Parting & Grooving Insert (10pcs)
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The Original Korloy SP200 NC3020 is a precision-engineered 2.0mm Single-Ended Parting and Grooving Insert. Unlike double-ended versions, the single-ended SP series features a longer, reinforced shank that provides superior stability during deep grooving and large-diameter parting off. Optimized for Steel (P-Group) machining, the NC3020 CVD Grade ensures maximum heat resistance and extended tool life during high-speed production.
Designed for Depth: The single-ended configuration allows the SP200 to plunge deeper into the workpiece without the risk of damaging a secondary edge. It is the professional's choice for parting off solid bars where rigidity and chip evacuation are critical.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| Insert Style | Single-Ended (High Stability) |
| Cutting Width (W) | 2.0 mm (+/- 0.1mm) |
| Grade | NC3020 (High-Speed CVD Steel Grade) |
| Coating | TiCN + Al2O3 + TiN |
Core Performance Benefits:
- Maximum Rigidness: The long-shank single-ended design provides a larger contact area for the tool holder, minimizing vibration during narrow 2mm grooves.
- Superior CVD Coating: NC3020 offers incredible thermal protection, allowing for higher cutting speeds ($V_c$) compared to PVD alternatives.
- Controlled Chip Breaking: The top-clamp geometry ensures chips are tightly curled and ejected, preventing "chip bird-nesting" in deep slots.
- Cost-Effective Parting: The 2.0mm width reduces material waste, which is essential when working with expensive alloy steels.
Recommended Cutting Parameters:
| Material | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Low Carbon Steel | 110 - 210 m/min | 0.05 - 0.16 mm/rev |
| Alloy Steel (4140/SCM440) | 90 - 160 m/min | 0.04 - 0.12 mm/rev |
| Parting to Center | Reduce Vc by 20% | 0.03 - 0.08 mm/rev |
Compatible Tool Holders:
Requires SPB-style parting blocks or specialized grooving holders:
- Standard Blades: SPB 26-2 / SPB 32-2
- Mounting Blocks: SMBB 2026 / 2526 / 2532
Machinist Tip: Why Single-Ended SP200?
Single-ended vs. Double-ended (MGMN) inserts:
Best for Deep Cuts. Because the back of the insert is solid steel, it handles the pressure of deep parting (especially in solid bars) much better than double-ended inserts which can vibrate or break under extreme depth.
Best for Shallow Grooving. Double-ended inserts offer two edges for economy, but their depth of cut is limited by the second edge. For true parting-off of large stock, SP series is the industry standard.
Pro Advice: Always ensure the SP200 is mounted perfectly on center. Being even 0.2mm above or below center will cause the 2mm blade to rub or chip prematurely.
Packaging: 10 pieces per box.
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