Tungaloy TNMG220404L-S T9125 Left-Hand CVD Carbide Turning Insert for Steel - BEYOND

Tungaloy TNMG220404L-S T9125 Left-Hand CVD Carbide Turning Insert for Steel

$99.47 USD

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Description

Tungaloy TNMG220404L-S T9125 Turning Insert

Precision Left-Hand Machining | T9125 Premium Steel Grade | -S Finishing Geometry

What is the best 22mm left-hand insert for stable steel finishing?

The Tungaloy TNMG220404L-S T9125 is a high-performance, industrial-grade turning insert designed for the specialized needs of left-hand (L) machining operations. Engineered for finishing to light-duty cutting of carbon and alloy steels, this 22mm size insert provides superior reach and stability. Featuring the T9125 CVD coated carbide grade, it excels in heat resistance and edge retention. The -S (RS) chipbreaker ensures smooth chip evacuation at low feed rates, delivering a superior surface luster. 100% Made in Japan, it is the professional choice for high-precision B2B manufacturing.

T9125 Grade Technology

A specialized CVD grade with a thick Al2O3 layer. It offers extreme resistance to crater wear and plastic deformation during high-speed finishing cycles.

-S (RS) Chipbreaker

Specifically optimized for finishing applications. Its sharp edge geometry reduces cutting forces and eliminates vibration for tight-tolerance parts.

Large 22mm ISO Size

The larger TNMG 22 size offers increased rigidity and heat dissipation compared to smaller variants, ideal for heavier finishing operations.

Decoding TNMG 220404L-S Nomenclature

T
Tri
N
0°
M
Tol.
G
D-Side
22
Size
04
Thk
04
0.4 Rad
L
LH
-S
Chip

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

Technical Feature Metric (ISO) Imperial (ANSI)
Standard Model TNMG220404L-S TNMG 431L-S
Inscribed Circle (IC) 12.7 mm 1/2"
Thickness (S) 4.76 mm 3/16"
Corner Radius (RE) 0.4 mm 1/64"

Recommended Finishing 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: Use high cutting speeds to activate the Al2O3 thermal barrier. Constant coolant flow is recommended for left-hand boring cycles.*

4. Primary Applications

  • Precision finishing of carbon and alloy steels.
  • Boring operations requiring left-hand tool rotation.
  • Automotive components with complex internal profiles.
  • Mass production requiring extremely stable wear life.

5. Tool Compatibility

Compatible with all standard ISO/ANSI TNMG 2204 tool holders. Recommended for use with MTJNL or WTJNL series holders. Fits Haas, DMG Mori, and Mazak CNC centers.

7. Why Source from CNCHome-Beyond?

100% Genuine
Tungaloy Japan Stock
Technical Experts
Support for Tool Cycles
Fast Shipping
Global B2B Delivery
Factory Sealed
Original Japan Packaging

Feedback from Real Machine Shops

⭐⭐⭐⭐⭐ "Incredible Stability" - James K., USA
"The larger TNMG 22 size is perfect for our heavy finishing passes. Left-hand orientation is exactly what we needed for our specific CNC setup. T9125 lasts through the whole shift."

⭐⭐⭐⭐⭐ "Original Japan Quality" - Markus D., Germany
"Received original Tungaloy boxes. The surface finish on alloy steel is mirror-like with the -S chipbreaker."

⭐⭐⭐⭐ "Consistent Performance" - Luca B., Italy
"We use these for precision boring. The wear pattern is very predictable, which helps us maintain tolerances over long runs."

⭐⭐⭐⭐⭐ "Fast Shipping, Genuine Product" - H. Sato, Japan
"Confirmed original stock. T9125 is my top choice for steel machining. The technical data provided was very accurate."

⭐⭐⭐⭐⭐ "Excellent Surface Finish" - Rajesh V., India
"The -S geometry handles the chips perfectly even at low feed rates. No vibration issues at all."

8. FAQ - Professional Support

Q: Why use a larger TNMG 22 size instead of 16?

A: The TNMG 22 size provides a larger contact surface and more carbide volume, which leads to better heat dissipation and increased rigidity during precision finishing operations.

Q: Is T9125 suitable for heavy roughing?

A: T9125 is highly versatile, but with the -S chipbreaker, it is optimized for finishing to light-duty cutting. For heavy roughing, we recommend the -TM or -TH chipbreakers.

Q: What tool holder is required for the 'L' orientation?

A: You must use a left-hand tool holder (e.g., MTJNL 2525 M22) to ensure the cutting edge is positioned correctly for the spindle rotation.

Tech Tip: T9125 Grade vs. Cermet

While cermet offers high gloss, **T9125 CVD coated carbide** provides superior toughness. It is much more resistant to chipping during interrupted finishing cuts on steel. **Tungaloy Japan** - Excellence in precision engineering.

© 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.