TaeguTec VNMG160408FG CT3000 Cermet Turning Insert | 10 Pcs/Box
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TaeguTec VNMG160408FG CT3000 Inserts
High-Speed Mirror Steel Finishing & Profiling | CT3000 Cermet Grade | Box of 10 Pcs
"Which cermet carbide insert is best for mirror-finish profiling and high-speed finishing in carbon and alloy steels?"
The TaeguTec VNMG160408FG CT3000 is a high-precision, negative 35° rhombic turning insert engineered specifically for ultra-high-speed finishing, complex contouring, and mirror-finish copy turning on CNC lathes. Manufactured from TaeguTec's premier CT3000 uncoated TiCN-based cermet grade, this insert combines ceramic hardness with metallic binder toughness to eliminate Built-Up Edge (BUE) and chemical affinity with ferrous workpieces. Unlike standard tungsten carbide, the CT3000 cermet maintains an exceptionally sharp cutting edge at extreme surface speeds, producing grind-like Ra surface finishes and tight dimensional accuracy on slender or intricate shafts. Paired with the positive-rake FG finishing chipbreaker and a precise 0.8mm corner radius, it controls thin, continuous finishing chips smoothly. Whether you need delicate contouring or are browsing TaeguTec negative turning inserts for high-precision shop production, the VNMG160408FG CT3000 provides unmatched surface luster.
Core Engineering Advantages
CT3000 Anti-BUE Cermet
Low chemical reactivity with steel prevents material welding on the edge, delivering superior Ra mirror finishes without secondary grinding.
FG Precision Chipbreaker
Micro-dot positive rake geometry curls delicate finishing chips cleanly at shallow depths of cut without marring finished contours.
35° Acute Profiling Access
Slender rhombic geometry clears steep shoulders, narrow relief grooves, and complex contours inaccessible to 55° or 80° inserts.
ISO Code Specification Breakdown
Technical Specifications & Dimensional Comparison
| Parameter | Metric (Standard) | Imperial Equivalent |
|---|---|---|
| ISO / ANSI Designation | VNMG 160408 FG | VNMG 331 FG |
| Inscribed Circle (IC) | 9.525 mm | 0.375" (3/8") |
| Thickness (S) | 4.76 mm | 0.1875" (3/16") |
| Corner Radius (RE) | 0.80 mm | 0.0315" (1/32") |
| Grade & Substrate | CT3000 (Uncoated TiCN Cermet) | High-Speed Finishing Cermet |
Recommended Cutting Parameters
*Cermet requires elevated surface speeds (Vc) and rigid machine setups. Run completely dry or with steady, high-volume flood coolant to prevent thermal shock.
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (Ap) |
|---|---|---|---|
| Carbon Steel (1045 / S45C) | 220 - 420 m/min | 0.06 - 0.22 mm/rev | 0.15 - 1.50 mm |
| Alloy Steel (4140 / SCM440) | 180 - 360 m/min | 0.06 - 0.18 mm/rev | 0.15 - 1.20 mm |
| Ductile & Gray Cast Iron | 200 - 380 m/min | 0.08 - 0.24 mm/rev | 0.20 - 1.50 mm |
Compatible Tool Holders & Boring Bar Resources
Pair these inserts with rigid 16-size (3/8" IC) negative 35° diamond external turning holders such as the Beyond MVUNR2020K16 Right-Hand Turning Tool Holder, Beyond MVUNL2525M16 Left-Hand Turning Tool Holder, and Beyond MVQNR2525M16 Right-Hand Turning Tool Holder.
For internal profiling and bore machining, explore our rough and fine boring series, browse screw-on system boring bars, or read our engineering guide on how to choose the right boring bar and insert.
Industrial Applications
- Mirror-Finish Profiling & Contour Turning: Achieving low-Ra surface finishes on complex steel shafts and aerospace components without grinding.
- Precision Undercutting & Relief Grooves: Acute 35° rhombic tip accesses tight shoulders and steep back-angles cleanly.
- High-Speed CNC Production: Maintaining consistent part dimensions and exceptional luster over long continuous finishing runs.
System Compatibility & Related Insert Catalogs
The VNMG 160408FG (ANSI VNMG 331 FG) fits all standard ISO-compliant 35° rhombic toolholders featuring a 9.525mm (3/8") inscribed circle pocket, including lever-lock (P-type), wedge-clamp (M-type), and double-clamp (D-type) turning systems. To build out your complete shop inventory, explore our comprehensive collection of TaeguTec VNMG inserts, TaeguTec DNMG inserts, and TaeguTec CNMG inserts. You can also compare cross-brand tooling options across Korloy VNMG, ZCC-CT VNMG, TaeguTec DNMG, and TaeguTec CNMG series.
TaeguTec Grade Selection Matrix
Choosing between TaeguTec Cermet and Coated Carbide grades:
- CT3000 (Featured - Uncoated Cermet): Unmatched surface finish quality and anti-BUE performance in high-speed continuous finishing of carbon and alloy steels.
- PV3010 (PVD Coated Cermet): Pairs a cermet core with a PVD coating for higher thermal shock resistance in light interrupted finishing passes.
- TT8115 / TT8125 (CVD Coated Carbide): Recommended when heavier depths of cut, scale removal, or interrupted cuts require higher substrate toughness than cermet offers.
Why Machinists Choose Our Store
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Directly sourced original TaeguTec factory-sealed packages (10 pcs/box).
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Technical Engineering Support
On-staff tooling specialists available for speed and feed recommendations.
Frequently Asked Questions
Q: When should I choose CT3000 Cermet over TT8115 Carbide for VNMG inserts?
A: Choose CT3000 Cermet when your priority is achieving mirror-like Ra surface finishes and eliminating Built-Up Edge on continuous profiling cuts in steel. Choose TT8115 Carbide if your profiling involves interrupted passes.
Q: Why is the FG chipbreaker paired with a 0.8mm radius on this insert?
A: The FG finishing chipbreaker provides a sharp positive rake to curl thin chips at shallow depths of cut, while the 0.8mm corner radius offers added edge strength and smooth tool transitions during contouring.
Q: How many cutting edges are in each box?
A: Each double-sided VNMG insert provides 4 usable indexable cutting corners (40 total edges per 10-piece factory-sealed box).
Need Help With TaeguTec Inserts?
Looking for a TaeguTec 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 TaeguTec 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.