TaeguTec VNMG160408MT TT5100 Carbide Turning Insert | 10 Pcs/Box
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TaeguTec VNMG160408MT TT5100 Inserts
High-Speed Cast Iron Profiling & Turning | Specialized TT5100 CVD Grade | Box of 10 Pcs
"Which 35-degree diamond carbide insert is best for high-speed profiling and turning in gray and ductile cast iron?"
The TaeguTec VNMG160408MT TT5100 is a double-sided, negative 35° rhombic turning insert engineered specifically for high-velocity contouring, copy turning, and medium stock removal in cast iron workpieces. Powered by TaeguTec's dedicated TT5100 CVD coating grade, this insert features an ultra-hard, wear-resistant substrate shielded by an extra-thick Alpha-Alumina (Al2O3) and TiCN coating structure. Cast iron machining generates intense abrasive flank wear and high localized heat; the TT5100 grade resists abrasive erosion and thermal deformation at extreme cutting speeds. Paired with the reinforced MT medium-turning chipbreaker and a sturdy 0.8mm nose radius, it protects the slender 35° cutting corner while smoothly evacuating segmented cast iron chips. Whether you are contouring automotive brake components or exploring TaeguTec negative turning inserts for high-volume foundry machining, the VNMG160408MT TT5100 delivers superior tool life.
Core Engineering Advantages
TT5100 Cast Iron CVD Shield
Extra-thick Alpha-Al2O3 ceramic coating blocks abrasive flank wear and thermal cratering in gray and ductile cast iron.
MT Reinforced Chipbreaker
Strengthened edge land prevents micro-chipping on the acute 35° corner during interrupted casting skin removal.
35° Acute Profiling Access
Slender rhombic geometry accesses narrow relief grooves, steep tapers, and back-angles inaccessible to 55° or 80° inserts.
ISO Code Specification Breakdown
Technical Specifications & Dimensional Comparison
| Parameter | Metric (Standard) | Imperial Equivalent |
|---|---|---|
| ISO / ANSI Designation | VNMG 160408 MT | VNMG 332 MT |
| 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 & Coating | TT5100 (Thick CVD TiCN + Al2O3) | High-Speed Cast Iron CVD Carbide |
Recommended Cutting Parameters
*Values are optimized for high-speed cast iron profiling and medium turning. Dry machining is strongly recommended for gray cast iron to prevent thermal shock cracking.
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (Ap) |
|---|---|---|---|
| Gray Cast Iron (GG25 / FC250) | 240 - 450 m/min | 0.15 - 0.38 mm/rev | 0.50 - 3.20 mm |
| Ductile / Nodular Iron (GGG50 / FCD500) | 160 - 300 m/min | 0.12 - 0.30 mm/rev | 0.50 - 2.80 mm |
| Hardened Steel & Chill Cast Iron (ISO H) | 80 - 140 m/min | 0.08 - 0.20 mm/rev | 0.20 - 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
- Automotive Cast Iron Component Profiling: High-speed contouring of brake rotors, drums, flywheels, and differential housings.
- Hydraulic & Pump Castings: Accessing narrow relief grooves, stepped shoulders, and complex internal/external profiles in ductile iron.
- High-Volume Dry CNC Turning: Sustaining rapid metal removal rates without coolant in high-production foundry machining cells.
System Compatibility & Related Insert Catalogs
The VNMG 160408MT (ANSI VNMG 332 MT) 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 your production setup:
- TT5100 (Featured - Specialized Cast Iron CVD): Ultra-hard substrate with an extra-thick Alpha-Al2O3 coating engineered strictly for high-speed turning of gray and ductile cast iron (ISO K05-K25).
- TT8115 / TT8125: General-purpose CVD grades optimized primarily for carbon and alloy steel turning (ISO P), though capable of secondary cast iron work.
- TT8020: High-toughness PVD grade recommended when machining heavily interrupted castings with sand inclusions or unstable setups.
Why Machinists Choose Our Store
100% Genuine Guarantee
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: Why is TT5100 superior to general steel grades like TT8125 for cast iron?
A: Cast iron creates short, abrasive chips that rapidly wear down the flank face of standard steel inserts. TT5100 uses a much harder carbide core and a thicker Alpha-Al2O3 ceramic coating that resists abrasive flank wear at high speeds.
Q: Should I use coolant when turning gray cast iron with TT5100?
A: No—dry machining is ideal for gray cast iron. Because thick CVD coatings experience rapid heating and cooling cycles, intermittent coolant splash can cause thermal shock micro-cracks on the cutting edge.
Q: How many cutting edges are included in one 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.