TaeguTec VNMG160404FG CT3000 Cermet Turning Insert | 10 Pcs/Box
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TaeguTec VNMG160404FG CT3000 Inserts
High-Speed Steel Mirror Finishing & Precision Profiling | CT3000 Cermet Grade | Box of 10 Pcs
"Which 35-degree diamond cermet insert with a 0.4mm corner radius is best for high-speed mirror finishing and tight-tolerance profiling in carbon and alloy steels?"
The TaeguTec VNMG160404FG CT3000 is a double-sided, negative 35° rhombic turning insert engineered specifically for high-velocity finish turning, precision contouring, and mirror-like surface generation in carbon steels, alloy steels, and ductile cast iron. Powered by TaeguTec's high-hardness CT3000 uncoated TiCN cermet grade, this insert replaces traditional tungsten carbide with a titanium carbonitride ceramic-metallic matrix. Because TiCN cermet exhibits exceptionally low chemical affinity to iron and superior high-temperature wear resistance, the CT3000 grade completely eliminates Built-Up Edge (BUE) and welding during high-speed continuous finishing—producing bright, grind-like Ra surface finishes without requiring thick CVD or PVD coatings. Paired with the sharp, positive-rake FG fine-finishing chipbreaker and a precise 0.4mm corner radius, it cleanly curls and evacuates light, wispy chips at shallow depths of cut (Ap down to 0.1mm). Whether you are eliminating secondary grinding operations on precision automotive shafts or exploring TaeguTec negative turning inserts for high-precision production, the VNMG160404FG CT3000 delivers unmatched dimensional accuracy and surface luster.
Core Engineering Advantages
CT3000 Uncoated TiCN Cermet
Ultra-low chemical reactivity with steel prevents Built-Up Edge (BUE) and delivers superior mirror-like surface finishes at high speeds.
FG Fine-Finishing Chipbreaker
Precision-molded micro-projections curl and break thin finishing chips cleanly at shallow depths of cut (0.10 - 1.20 mm).
35° Acute Profiling Access
Slender rhombic geometry and 0.4mm nose radius clear narrow relief grooves, sharp 90-degree shoulders, and complex tapers.
ISO Code Specification Breakdown
Technical Specifications & Dimensional Comparison
| Parameter | Metric (Standard) | Imperial Equivalent |
|---|---|---|
| ISO / ANSI Designation | VNMG 160404 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) | 0.40 mm | 0.0157" (approx. 1/64") |
| Grade & Substrate | CT3000 (Uncoated TiCN Cermet) | High-Speed Steel Finishing Cermet |
Recommended Cutting Parameters
*Values are optimized for high-speed continuous finishing in rigid setups. Avoid heavy thermal shock (intermittent coolant splash) when running uncoated cermet at high surface speeds.
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (Ap) |
|---|---|---|---|
| Carbon Steel (1045 / S45C) | 200 - 380 m/min | 0.05 - 0.18 mm/rev | 0.10 - 1.20 mm |
| Alloy & Free-Machining Steel (4140 / 12L14) | 180 - 350 m/min | 0.05 - 0.16 mm/rev | 0.10 - 1.00 mm |
| Ductile & Malleable Cast Iron | 180 - 300 m/min | 0.06 - 0.18 mm/rev | 0.15 - 1.20 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 Shaft & Bearing Journal Turning: Achieves ultra-low Ra surface roughness in carbon and alloy steels, often eliminating downstream grinding.
- High-Volume Automotive & Hydraulic Precision Parts: Delivers strict dimensional repeatability across long continuous production runs on rigid CNC lathes.
- Tight Shoulder & Undercut Clearance: 0.4mm nose radius and 35° rhombic geometry navigate restricted relief grooves and sharp 90-degree shoulders.
System Compatibility & Related Insert Catalogs
The VNMG 160404FG (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 stock your tool crib across all geometries, explore our full range 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 collections.
TaeguTec Grade Selection Matrix
Selecting the optimal TaeguTec turning grade for precision steel finishing:
- CT3000 (Featured - Uncoated TiCN Cermet Grade): Ceramic-metallic substrate engineered for high-speed continuous finishing of steels (ISO P05-P15) and cast iron (ISO K), producing superior mirror surface luster without Built-Up Edge.
- PV3010 (PVD Coated Carbide): Fine-grained carbide with a smooth PVD coating recommended when finishing stainless steels or steel parts with minor interruptions.
- TT8115 / TT8125 (CVD Coated Carbide): Thick multi-layer CVD coated carbide grades designed for higher-feed, high-temperature steel turning where greater edge toughness is needed.
Why Machinists Choose Our Store
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Directly sourced original TaeguTec factory-sealed packages (10 pcs/box).
Same-Day Dispatch
In-stock cutting tools ship rapidly to keep your CNC spindles turning.
Technical Engineering Support
On-staff tooling specialists available for speed and feed recommendations.
Frequently Asked Questions
Q: Is CT3000 a CVD/PVD coated carbide or an uncoated cermet?
A: CT3000 is an uncoated titanium carbonitride (TiCN) cermet grade. Unlike tungsten carbide inserts that rely on CVD or PVD surface coatings, cermet inherently resists chemical welding to steel, allowing a sharper edge and brighter mirror surface finish.
Q: Should I use flood coolant with CT3000 cermet inserts?
A: Cermet is more sensitive to thermal shock than tungsten carbide. Run CT3000 dry at high surface speeds for optimal tool life, or apply a heavy, uninterrupted flood of coolant at lower speeds—never allow intermittent coolant splashing.
Q: How many cutting edges are included 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.