Tungaloy TNMG160408L-S T9125 Left-Hand CVD Coated Carbide Turning Insert for Steel - BEYOND

Tungaloy TNMG160408L-S T9125 Left-Hand CVD Coated Carbide Turning Insert for Steel

$69.92 USD

Price shown is a starting point. Contact us for a precise quote based on your requirements.

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Description

Tungaloy TNMG160408L-S T9125 Turning Insert

Left-Hand High-Stability Machining | T9125 CVD Grade | RS Finishing Geometry

What is the best left-hand carbide insert for finishing alloy steel?

The Tungaloy TNMG160408L-S T9125 is a professional-grade, left-hand (L) oriented turning insert specifically engineered for the high-efficiency finishing of carbon and alloy steels. Utilizing the T9125 CVD coated carbide grade, it offers an optimal balance of wear resistance and fracture toughness, ensuring long tool life even under high-speed continuous cutting. The -S (RS) chipbreaker is specialized for light-duty finishing, providing excellent chip control and preventing surface marring. With a 0.8mm corner radius, this insert offers enhanced edge strength for stable precision. 100% Made in Japan, it is the benchmark for industrial B2B CNC operations.

T9125 CVD Coating

Features a thick Al2O3 layer for superior heat resistance. This prevents plastic deformation and crater wear during high-speed finishing of steel.

RS (-S) Chipbreaker

A sharp geometry designed for low cutting resistance. It ensures stable chip evacuation at small depths of cut, providing a high-quality surface finish.

Left-Hand Orientation

The 'L' orientation is essential for specific CNC tool paths and back-turning operations where right-hand tools cannot operate effectively.

Decoding TNMG 160408L-S Nomenclature

T
Tri
N
M
Tol.
G
D-Side
16
Size
04
Thk
08
0.8 Rad
L
LH
-S
Chip

3. Technical Data: Metric (ISO) vs. Imperial (ANSI)

Technical Feature Metric (ISO) Imperial (ANSI)
Standard Model TNMG160408L-S TNMG 332L-S
Inscribed Circle (IC) 9.525 mm 3/8"
Thickness (S) 4.76 mm 3/16"
Corner Radius (RE) 0.8 mm 1/32"

Recommended Finishing Parameters

  • Cutting Speed (Vc): 150 - 320 m/min
  • Feed Rate (f): 0.10 - 0.35 mm/rev
  • Depth of Cut (ap): 0.2 - 1.5 mm

*Pro-Tip: For optimal tool life, maintain constant cutting speeds. The T9125 grade's CVD coating is designed to handle high thermal loads effectively.*

4. Primary Applications

  • Precision finishing of carbon and alloy steels.
  • Specialized CNC tool paths requiring left-hand tools.
  • Final dimensioning of shafts, valves, and mechanical components.
  • Effective in high-speed continuous turning environments.

5. Tool Compatibility

Standard ISO/ANSI pocket compatibility. Pairs optimally with MTJNL, WTJNL, or DTLNR tool holders. Suitable for high-precision CNC lathes including Haas, DMG Mori, and Mazak.

7. Why Source from CNCHome-Beyond?

100% Genuine
Tungaloy Japan Stock
Technical Experts
Dedicated Support Team
B2B Logistics
Global Express Shipping
Verified Stock
Original Sealed Packaging

Feedback from the Global Workshops

⭐⭐⭐⭐⭐ "Stable and Precise" - James K., USA
"Finding high-quality left-hand inserts can be tough. The T9125 is extremely stable for finishing steel shafts. Great tool life."

⭐⭐⭐⭐⭐ "Original Quality stock" - Markus D., Germany
"Exactly as described. Authentic Tungaloy boxes. The 0.8mm radius is strong and provides a very predictable wear pattern."

⭐⭐⭐⭐ "Great Chip Control" - Hiroshi S., Japan
"Consistent chip evacuation even at low feeds. Ideal for our finishing cycles on CNC lathes. Highly reliable brand."

⭐⭐⭐⭐⭐ "Reliable B2B Partner" - Carlos M., Mexico
"Beyond provides original stock every time. Fast shipping to our factory. The T9125 grade is my first choice for steel finishing."

⭐⭐⭐⭐⭐ "Exceptional Surface Finish" - Rajesh V., India
"The -S chipbreaker is perfect for light finishing passes. No vibrations and the surface finish is excellent. Best value for Tungaloy."

8. FAQ - Professional Machining Support

Q: What is the benefit of a Left-Hand (L) insert?

A: Left-hand inserts are designed to cut in the opposite direction. This is required for specific tool holder orientations or back-turning operations to maintain proper chip flow and tool clearance.

Q: How does T9125 compare to cermet grades?

A: While cermet provides higher gloss, the T9125 CVD coated carbide is much tougher. It is better suited for continuous cutting where higher edge strength is required to prevent chipping.

Q: Can I use this for stainless steel?

A: T9125 is primarily optimized for carbon and alloy steels (P-group). For stainless steel finishing, Tungaloy's T6100 series or AH series grades are recommended.

Tech Tip: Optimizing CVD Performance

To maximize tool life with **T9125**, avoid low cutting speeds that can lead to built-up edge (BUE). High speed allows the CVD coating to function at peak thermal efficiency. **Tungaloy Japan** - Engineering excellence for precision machining.

© Technical Data by cnchome-beyond.com - Global CNC Tool Authority

Technical FAQ & Buying Guide

Are your carbide inserts interchangeable with major brands like Sandvik, Iscar, or Kennametal?

Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.

How do I choose the correct insert grade and chipbreaker for machining Stainless Steel (M) vs. Carbon Steel (P)?

We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:

  • For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
  • For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
What are the recommended cutting speed (Vc) and feed rate (f) parameters to maximize tool life?

The optimal cutting parameters vary depending on the workpiece hardness and operation type:

  • For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
  • For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Do you offer bulk discounts or wholesale pricing for machine shops and distributors?

Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.

What is your international shipping policy and typical lead time for orders?

We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.

How do you guarantee the quality and tolerance precision of your CNC tools?

All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.