Taegutec TNMG 160404L-FS TT8125 CVD Insert Left-Hand Steel Finishing (10pcs) - CNCHome-Beyond

Taegutec TNMG 160404L-FS TT8125 CVD Insert Left-Hand Steel Finishing (10pcs)

$125.98 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

TaeguTec TNMG 160404L-FS TT8125

Precision Left-Hand Finishing for Challenging Steel Applications

Product Overview

"Which left-hand insert provides the best surface finish on steel when the setup is not perfectly rigid or has light interruptions?"

The TaeguTec TNMG 160404L-FS TT8125 is a specialized Left-hand (L) finishing insert designed for ISO P (Steel). Utilizing the TT8125 "Tough-CVD" grade, this insert features a multi-layered alumina coating over a high-toughness substrate. The FS (Finishing) chipbreaker is engineered with a sharp, positive rake angle specifically for low depths of cut, ensuring that chips are broken cleanly away from the workpiece. With a 0.4mm corner radius, it delivers the tight dimensional tolerances and superior surface Ra required for high-precision components.

Key Core Advantages

TT8125 Edge Security

A toughened CVD grade that bridges the gap between wear resistance and impact strength, preventing chipping in vibrating setups.

FS Chip Management

Optimized for fine finishing. It prevents "bird-nesting" at feed rates as low as 0.05 mm/rev, protecting the part surface.

Thermal Barrier Coating

The advanced Al2O3 layer acts as a heat shield, maintaining tool hardness even during high-speed continuous cutting.

Technical Specifications

Insert Code Decoding: TNMG 160404L-FS

T
Triangle
N
Negative
M
Tolerance
G
Hole/Chip
160404
0.4 Rad
L-FS
LH-Finish
Unit System Designation I.C. / Thickness Radius
Metric (ISO) TNMG 160404L-FS 9.525 / 4.76 mm 0.40 mm
Imperial (ANSI) TNMG 331L-FS 3/8" / 3/16" 1/64"

Recommended Cutting Parameters (TT8125 Grade)

Material (ISO P) Vc (Speed m/min) fn (Feed mm/rev)
Carbon / Alloy Steel 180 - 320 0.05 - 0.20
Die / Mold Steel 150 - 280 0.05 - 0.18

Left-Hand System Pairing


Applications & Tool Compatibility

  • Small Part Finishing: Perfect for high-tolerance shafts and pins in carbon steel.
  • Reverse Turning: Ideal for specific CNC paths requiring a Left-hand orientation.
  • Semi-Interrupted Cuts: The TT8125 substrate absorbs impacts where other finishing grades chip.
  • Compatibility: Fits all ISO-standard size 16 negative Left-hand holders (MTJNL, PSSNL, etc.).

TaeguTec Grade Performance Chart

Grade Condition Coating Primary Benefit
TT8125 General / Semi-Interrupted CVD High Toughness Finishing
TT8115 High Speed Continuous CVD Max Wear Resistance
TT9225 Interrupted / Roughing CVD Max Edge Security

Why Machinists Trust TT8125?

Finishing is the most critical stage of production. A chipped tool here can scrap a nearly finished part. The TNMG 160404L-FS TT8125 is designed as a "Security Grade." It bridges the gap between high-speed CVD performance and the ruggedness of a PVD grade. The FS geometry acts as a precision micro-plow, reducing cutting forces to ensure the tool doesn't deflect. When your process requires Left-hand tooling and absolute consistency, TT8125 is the stable choice that maximizes your yield and machine uptime.

★★★★★

"Perfect for our sub-spindle operations. The LH orientation was hard to find in such a tough grade."

— Mike R., USA
★★★★★

"Exzellente Standzeit bei der Bearbeitung von legiertem Stahl. Sehr empfehlenswert."

— Hans B., Germany
★★★★★

"Ottima finitura superficiale anche in condizioni di taglio instabile."

— Pietro L., Italy
★★★★☆

"Strongest finishing edge we've used for reverse turning paths."

— Kenji H., Japan

Frequently Asked Questions

Q: Can I use this on a Right-Hand toolholder?
A: No. The "L" indicates a Left-Hand geometry. It must be paired with Left-Hand (LH) holders to ensure the correct cutting angle and chip flow.
Q: What is the maximum depth of cut for the FS chipbreaker?
A: The FS is optimized for finishing. For best results, keep your depth of cut (ap) between 0.3mm and 1.5mm.
Q: Is TT8125 suitable for Stainless Steel?
A: While it can cut stainless, TT8125 is optimized for ISO P Steel. For ISO M Stainless, we recommend PVD grades like TT9080.

Pro-Tip: When using left-hand finishing inserts, ensure your coolant pressure is high to clear chips away from the spindle side of the part.

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.