TaeguTec VBMT160408FG TT8115 CVD Coated Carbide Turning Insert | 10 Pcs/Box
Free shipping on all orders.
Check compatibility: Confirm the model and dimensions before ordering.
Need help choosing? Contact us before ordering.
💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
TaeguTec VBMT160408FG TT8115 Inserts
Ultra-High-Speed Fine Finishing in Steel & Cast Iron | TT8115 CVD Coated Grade | Box of 10 Pcs
"Which 35-degree positive diamond CVD-coated carbide insert with a 0.8mm corner radius and FG chipbreaker is best for ultra-high-speed fine finishing and continuous precision turning in carbon steels, alloy steels, and cast irons?"
The TaeguTec VBMT160408FG TT8115 is an ultra-wear-resistant, single-sided, positive-rake 35° rhombic turning insert engineered specifically for high-speed light finishing passes, tight dimensional accuracy, and continuous contour turning across carbon steels, alloy steels, and gray/ductile cast irons. Powered by TaeguTec's premier high-speed TT8115 multi-layer CVD coated carbide grade, this insert combines a high-hardness, deformation-resistant carbide substrate with an ultra-thick, smooth alumina (Al2O3) and TiCN chemical vapor deposition (CVD) coating designed to endure extreme cutting temperatures and rapid surface speeds. Compared to general-purpose CVD grades like TT8125 or tougher PVD grades like TT9225, TT8115 delivers maximum flank wear and crater wear resistance during continuous high-velocity operations. Paired with the specialized FG fine finishing chipbreaker designed with a sharp positive geometry for shallow depths of cut and low feed rates, it minimizes cutting forces to prevent workpiece deflection and deliver superior surface finishes. Whether you are pairing it with internal boring bars like the Beyond S25S-SVJBR16 Internal Boring Bar, Beyond S16Q-SVXBR11 Boring Bar Holder, or Beyond C16Q-SVJBR11 Tungsten Steel Boring Bar, or browsing our extensive collections of TaeguTec VBMT inserts, TaeguTec VCMT inserts, TaeguTec VNMG inserts, Korloy VBMT inserts, ZCC-CT VBMT inserts, and Tungaloy positive turning inserts, the VBMT160408FG TT8115 guarantees elite shop floor productivity. Review additional engineering insights in our resources on carbide insert nose radius, machining speeds and feeds, what is a carbide drill, and solid vs indexable milling.
Core Engineering Advantages
TT8115 High-Speed CVD Grade
Ultra-hard substrate paired with thick alumina CVD coating maximizes wear resistance and thermal stability at high cutting speeds.
FG Fine Finishing Chipbreaker
Positive rake design optimized for light cutting depths and low feed rates, ensuring smooth chip control and mirror-like finishes.
35° Positive Rhombic Geometry
Acute 35-degree nose angle and positive clearance provide excellent accessibility for internal boring and complex contour turning.
ISO Code Specification Breakdown
Technical Specifications & Dimensional Comparison
| Parameter | Metric (Standard) | Imperial Equivalent |
|---|---|---|
| ISO / ANSI Designation | VBMT 160408-FG | VBMT 332-FG (Approx.) |
| 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" (approx. 1/32") |
| Grade & Substrate | TT8115 (High-Speed Multi-Layer CVD Coated Carbide) | High-Speed Steel/Cast Iron CVD Carbide |
Recommended Cutting Parameters
*Values are starting recommendations for ultra-high-speed continuous fine finishing in carbon steels, alloy steels, and cast irons with TT8115 CVD grade.
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (Ap) |
|---|---|---|---|
| Carbon & Low Alloy Steels (P - 1045 / 4140) | 300 - 480 m/min | 0.06 - 0.22 mm/rev | 0.20 - 1.80 mm |
| Free Cutting Steels & Structural Steels | 320 - 520 m/min | 0.08 - 0.25 mm/rev | 0.20 - 2.00 mm |
| Gray & Ductile Cast Irons (K - GG25 / GGG50) | 250 - 420 m/min | 0.06 - 0.24 mm/rev | 0.20 - 1.80 mm |
Compatible Tool Holders & Boring Bar Resources
Pair these precision 16-size (3/8" IC) positive inserts with compatible turning and boring toolholders such as the Beyond S25S-SVJBR16 Internal Boring Bar, Beyond S16Q-SVXBR11 Boring Bar Holder, and Beyond C16Q-SVJBR11 Tungsten Steel Boring Bar.
For internal profiling solutions, explore our rough and fine boring series or browse screw-on system boring bars.
Industrial Applications
- Ultra-High-Speed Steel Fine Finishing: Delivering mirror-like surface finishes and tight dimensional accuracy on high-volume automotive shafts and bearing races.
- Continuous Cast Iron & Steel Contouring: High-hardness TT8115 CVD grade resists abrasive wear and plastic deformation during uninterrupted high-RPM passes.
- Multi-Brand Tooling Consolidation: Fully compatible with alternate positive turning systems across TaeguTec VBMT, Korloy VBMT, ZCC-CT VBMT, and Tungaloy positive turning inserts catalogs.
System Compatibility & Related Insert Catalogs
The VBMT 160408-FG fits all standard ISO-compliant positive 35° rhombic toolholders and boring bars designed for 9.525mm (3/8") IC positive VBMT inserts. To expand your tooling inventory, explore our comprehensive selections including TaeguTec VCMT, TaeguTec VNMG, and TaeguTec negative turning inserts. Review additional application guides such as CNMG grade cross reference guide, chipbreaker family guide, inserts by material, inserts by operation, and top global CNC insert brands.
TaeguTec Grade Selection Matrix
Selecting the optimal TaeguTec turning grade for positive inserts:
- TT8115 (Featured - High-Speed CVD Coated Grade): Ultra-wear-resistant multi-layer CVD coated carbide grade engineered for high-speed continuous finishing and turning in carbon steels, alloy steels (ISO P), and cast irons (ISO K).
- TT8125 (General CVD Coated Grade): Tougher multi-layer CVD grade designed as the first choice for general steel turning where moderate interruptions or varying depths of cut occur.
- TT9225 (PVD Coated Grade): Nano-PVD coated grade engineered for stainless steel machining (ISO M) and alloy steels where sharp edge toughness and thermal shock resistance are vital.
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: How does CVD grade TT8115 compare to TT8125 and PVD grade TT9225?
A: TT8115 is TaeguTec's highest-speed, most wear-resistant CVD grade for continuous steel and cast iron turning. TT8125 offers slightly higher toughness for general CVD steel turning, while PVD grade TT9225 is optimized for stainless steels and interrupted cuts.
Q: Why pair the FG chipbreaker with the high-speed TT8115 grade?
A: The FG chipbreaker is engineered for shallow depths of cut and fine finishing feeds, which matches the ultra-high-speed, continuous-cut wear resistance of TT8115 to maximize cycle speed and surface finish.
Q: How many cutting edges are included in each box?
A: Each single-sided VBMT insert provides 1 precision indexable cutting edge (10 edges total per 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.