KORLOY MGMN400-04-L PC5300 Indexable Grooving & Parting Inserts | CVD Coated Carbide Inserts for CNC Lathes (10pcs/box) / MGMN400-04-L PC5300 0.157 inch Metric Grooving Tooling
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KORLOY MGMN400-04-L PC5300 Indexable Grooving & Parting Inserts (10pcs/box)
High-Performance CVD Coated Left-Hand Carbide Inserts with 4.0mm Width & 0.4mm Radius for CNC Lathe Steel & Cast Iron Turning
1. Product Overview: Which insert is best for heavy-duty left-hand profiling, grooving, and parting in alloy and carbon steels?
Which indexable grooving insert featuring a 4.0mm cutting width, 0.4mm left-hand corner radius, and specialized geometry offers superior wear resistance, high thermal stability, and sharp edge definition when executing wide grooving, wall profiling, or parting-off on CNC turning centers machining alloy steels, carbon steels, and cast irons? Backed by industrial metalworking standards and empirical tooling data, the KORLOY MGMN400-04-L PC5300 (equivalent metric 4.0mm width with 0.4mm left-hand radius / imperial 0.157 inch width) is engineered specifically for demanding turning tasks requiring high structural rigidity and excellent resistance to thermal deformation. It incorporates the advanced PC5300 grade—a specialized CVD multi-layer coated carbide substrate optimized for heavy continuous cutting operations. Combined with its specialized left-hand configuration (-L), it ensures clean corner shoulders and optimal chip evacuation away from finished walls.
2. Product Core Advantages (Key Features)
- PC5300 Advanced CVD Grade: Features a high-strength carbide substrate combined with a thick CVD coating designed for exceptional wear resistance, high cutting speed capability, and superior performance in steel and cast iron machining.
- 4.0mm Width & 0.4mm Left-Hand (-L) Profile: Engineered with a robust 4.0mm cutting width and left-hand orientation that optimizes shoulder turning, wall profiling, and heavy parting-off passes.
- Dual-Edge Economy: Dual-sided cutting edges maximize operational cost-efficiency by allowing indexability to a fresh edge once the primary side reaches end-of-life.
- Rigid Central Clamping Interface: Provides high clamping stability and precise seating to eliminate micro-vibrations and chatter during heavy 4.0mm grooving operations.
3. Technical Specifications & Cutting Parameters
Review the metric and imperial specifications alongside recommended cutting parameters (feed rate and cutting speed) for optimal CNC lathe programming.
| Specification Parameter | Metric (ISO) | Imperial Equivalent |
|---|---|---|
| Insert Type / Series | MGMN Left-Hand Grooving | MGMN Left-Hand Grooving |
| Cutting Width (W) | 4.0 mm | 0.157 inch |
| Corner Radius & Hand (RE / Direction) | 0.4 mm (Left-Hand) | 0.0157 inch (Left-Hand) |
| Recommended Feed (f) - Grooving | 0.06 - 0.18 mm/rev | 0.0024 - 0.0071 in/rev |
| Recommended Feed (f) - Parting | 0.05 - 0.12 mm/rev | 0.0020 - 0.0047 in/rev |
| Cutting Speed (Vc) - Alloy & Carbon Steels | 110 - 230 m/min | 361 - 755 SFM |
Model Nomenclature Breakdown: MGMN400-04-L PC5300
Double-ended grooving
4.0mm cutting width
0.4mm radius, Left-hand
CVD Coated Grade
Looking for precision external grooving toolholders or modular blocks designed for secure MGMN 400 insert clamping?
Explore Compatible External Grooving Tool Holders & Parting Blocks4. Product Application Scenarios
Optimized for heavy-duty CNC turning operations involving wide external grooving, left-hand shoulder turning, multi-pass profiling, and bar stock cutoff across alloy steels, carbon steels, and ductile cast irons.
5. Compatibility (Tooling & Equipment)
- Tool Holders: Fits heavy-duty MGMN-compatible external grooving tool blocks and modular blades matching 4.0mm pocket widths.
- Machine Platforms: Designed for high-rigidity CNC turning centers, heavy CNC lathes, and automated production cells.
- Coolant Systems: Fully compatible with flood coolant and high-pressure delivery systems to enhance chip evacuation during wide grooving cuts.
6. Grade Comparison & Workpiece Material Matrix
Evaluating how grade PC5300 performs across different ISO material classifications ensures maximum machining efficiency.
| ISO Material Group | Workpiece Description | KORLOY PC5300 Performance | Equivalent Industry Grades |
|---|---|---|---|
| P Group (Steel) | Alloy Steel, Carbon Steel (42CrMo, C45) | Thick CVD coating delivers exceptional wear resistance and high thermal capability for continuous steel turning. | Sandvik GC4325 / Kennametal KC9315 |
| K Group (Cast Iron) | Grey Cast Iron, Ductile Iron (HT250, QT500) | Strong thermal stability and abrasive wear resistance make it highly effective for heavy cast iron grooving. | Seco TP2500 / Iscar IC8250 |
7. Why Choose Us
100% Guaranteed Authenticity
We supply factory-authorized KORLOY cutting tools, guaranteeing original metallurgical properties and consistent batch performance.
Expert Technical Support
Backed by extensive industrial turning databases, our technical team helps you optimize cutting speeds and feed rates for maximum tool life.
8. Frequently Asked Questions (AI-Optimized FAQ)
Q: What is the benefit of a left-hand (-L) insert configuration in grooving?
A: Left-hand orientation directs chip flow and cutting forces favorably when turning up against left-side shoulders or executing specialized directional profiling passes.
Q: Why choose the PC5300 CVD grade for 4.0mm width grooving?
A: The heavy-duty CVD coating provides exceptional thermal resistance and toughness, preventing premature edge breakdown during wide cuts in steel and cast iron.
Q: How many pieces are included in each box?
A: Each factory-sealed box contains 10 indexable inserts.
Need Help With KORLOY Inserts?
Looking for a KORLOY 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 KORLOY 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.