Tungaloy TNMG160404L-S T9125 Left-Hand CVD Coated Carbide Turning Insert for Steel - BEYOND

Tungaloy TNMG160404L-S T9125 Left-Hand CVD Coated Carbide Turning Insert for Steel

$69.92 USD

✓ In Stock & Fast Dispatch: Order processing: typically 1–3 business days after confirmation.
✓ Global Shipping: Delivery: generally 5–20 business days, depending on destination and shipping method.
✓ Guaranteed Quality: Check model, dimensions and compatibility before ordering. | Direct Factory Outlet
✓ Technical Support: Need grade selection help? Contact Engineer

💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF

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Description

Tungaloy TNMG160404L-S T9125 Turning Insert

Left-Hand Precision Steel Machining | T9125 CVD Technology | -S Finishing Geometry

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

The Tungaloy TNMG160404L-S T9125 is an industrial-grade, left-hand (L) oriented turning insert engineered for high-performance machining of carbon and alloy steels. Featuring the T9125 CVD coated carbide grade, it offers an exceptional balance of wear resistance and fracture toughness, even under fluctuating cutting temperatures. The -S (RS) chipbreaker is specialized for finishing to light-duty cutting, ensuring excellent chip evacuation and preventing workpiece marring. 100% Made in Japan, it is the ideal choice for CNC shops requiring precision left-hand tools for complex profiles and finishing passes.

T9125 CVD Grade

A premium CVD coated grade optimized for steel. The thick coating layer provides high heat resistance, significantly extending tool life during high-speed continuous cutting.

-S (RS) Finishing Chipbreaker

Specifically designed for finishing. Its sharp geometry reduces cutting forces and manages chips effectively at low feed rates, delivering a high-quality surface finish.

Left-Hand (L) Orientation

The "L" designation indicates a left-hand cutting direction, essential for specific tool holder setups (e.g., MTJNL) and back-turning operations.

Decoding TNMG 160404L-S Nomenclature

T
Tri
N
0°
M
Tol.
G
D-Side
16
Size
04
Thk
04
0.4 Rad
L
LH
-S
Chip

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

Technical Feature Metric (ISO) Imperial (ANSI)
Standard Model TNMG160404L-S TNMG 331L-S
Inscribed Circle (IC) 9.525 mm 3/8"
Thickness (S) 4.76 mm 3/16"
Corner Radius (RE) 0.4 mm 1/64"

Recommended Cutting Parameters

  • Cutting Speed (Vc): 150 - 320 m/min
  • Feed Rate (f): 0.05 - 0.20 mm/rev
  • Depth of Cut (ap): 0.2 - 1.5 mm

*Pro-Tip: Ensure the tool holder is securely clamped. Left-hand finishing at high speeds with T9125 provides a superior surface luster when the setup is rigid.*

4. Primary Applications

  • Precision finishing of carbon and alloy steels (P-group).
  • Automotive components requiring specific left-hand tool paths.
  • Boring and finishing operations in specialized CNC lathe cycles.
  • Final passes on heat-treated steel parts.

5. Tool Compatibility

Designed for all standard ISO/ANSI triangular tool pockets. Pair with MTJNL, WTJNL, or DTLNR holders. Fits seamlessly with major CNC brands including Mazak, Okuma, and Haas.

7. Why Source from CNCHome-Beyond?

100% Genuine
Tungaloy Japan Stock
Technical Experts
CNC Solutions Support
B2B Logistics
Global Express Shipping
Factory Sealed
Verified Original Box

Verified Machinist Reviews

⭐⭐⭐⭐⭐ "Perfect for LH Finishing" - Markus D., Germany
"Used this for a batch of steel pins. The left-hand setup worked perfectly and the surface Ra was spot on. T9125 lasts much longer than our previous inserts."

⭐⭐⭐⭐⭐ "Original Quality" - James K., USA
"Fast shipping from Beyond. These are original Tungaloy boxes. The -S chipbreaker handles the chips nicely without marring the finish."

⭐⭐⭐⭐ "Great for Steel" - Luca B., Italy
"Consistent performance in 4140 steel. Left-hand inserts are sometimes hard to find in stock, but Beyond had them. Authentic Japan quality."

⭐⭐⭐⭐⭐ "Reliable B2B Partner" - H. Sato, Japan
"Original stock confirmed. Very stable edge life even in high-speed finishing passes. Highly recommended for CNC shops."

⭐⭐⭐⭐⭐ "Best Value for Original Tungaloy" - Rajesh V., India
"Precise radius and very sharp cutting edge. Excellent value for money. The technical data provided was very helpful."

8. FAQ - Professional Machining Support

Q: What is the benefit of the 'L' (Left-Hand) designation?

A: Left-hand inserts are designed to cut in the opposite direction of standard tools. This is required for specific spindle rotations or tool holder orientations (like back-turning) where a right-hand tool would not clear the workpiece.

Q: How does T9125 compare to T9215?

A: T9125 is a versatile CVD grade that handles a wide range of steel types and cutting conditions. T9215 is optimized for even higher-speed continuous cutting. T9125 offers better toughness for general-purpose finishing.

Q: Can I use this for stainless steel?

A: While T9125 can handle some stainless steels, it is primarily optimized for carbon and alloy steels (ISO P). For stainless steel finishing, we recommend Tungaloy's T6100 or AH series grades.

Tech Tip: Optimizing Tool Life

To maximize the performance of the **T9125 grade**, maintain a constant cutting speed and avoid low speeds that can cause built-up edge (BUE). High speed prevents the material from sticking to the CVD coating. **Tungaloy Japan** - Excellence in precision cutting technology.

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

Technical FAQ & Buying Guide

How do I choose the correct specification?

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.

How can I check compatibility with my existing setup?

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.

What quantity and price unit am I 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.

How should I choose cutting parameters?

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.

Are bulk discounts available?

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.

When will my order ship and arrive?

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.