Tungaloy LNMU0303ZER-ML AH130 Double-Sided High-Feed Milling Insert

$101.99 USD

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Description

Tungaloy LNMU0303ZER-ML AH130 Insert

TungForce-Rec Double-Sided 4-Edge | ML Sharp Chipbreaker | Made in Japan

What is the best milling insert for gummy stainless steel and titanium?

The Tungaloy LNMU0303ZER-ML AH130 is a specialized indexable milling insert engineered for light to medium-duty machining in difficult-to-cut materials. Featuring the advanced AH130 PVD coated grade, this insert offers exceptional resistance to thermal cracking and notch wear, making it the industry standard for 300-series stainless steel and titanium alloys. The ML chipbreaker is designed with a sharper rake angle to reduce cutting resistance and prevent work hardening in gummy materials. With its unique double-sided 4-edge structure, this Japan-made milling insert provides high cost-efficiency and superior surface finish Ra for precision CNC machining cycles.

Decoding the LNMU0303ZER-ML Technical Nomenclature

L
90° Shape
N
0° Relief
M
Tolerance
U
Fixing
03
Size
03
Thickness
ZER
General
ML
Light Cut

Technical Specs: Metric vs. Imperial Units

ISO Parameter Metric Unit Imperial Designation
Cutting Edge Length 3.5 mm 0.138 inch
Insert Thickness 3.18 mm 1/8 inch
Inscribed Circle (IC) 6.35 mm 1/4 inch
Corner Radius 0.4 mm 0.0157 inch

Recommended Cutting Parameters (AH130 Grade)

  • Cutting Speed (Vc): 40 - 100 m/min (Titanium Alloys) | 60 - 150 m/min (Stainless Steel)
  • Feed per Tooth (fz): 0.10 - 0.25 mm/t (Optimized for ML breaker)
  • Max Depth of Cut (Ap): 0.5 - 0.8 mm (Ideal for light feed logic)

*Pro Tip: For machining titanium, use a generous supply of high-pressure coolant to manage heat. The AH130 grade is specifically formulated to resist the high thermal loads of aerospace machining.*

Global Verified Customer Reviews

⭐⭐⭐⭐⭐ "Game Changer for 316 Stainless" - Stefan H., Germany
"The ML chipbreaker makes such a difference. We were struggling with built-up edge, but this insert stays clean and sharp."

⭐⭐⭐⭐⭐ "Top Choice for Titanium" - Takumi K., Japan
"Consistent tool life in Aerospace alloys. AH130 grade is very reliable for overnight CNC production."

⭐⭐⭐⭐ "Smooth Cutting Action" - James W., USA
"Low vibration and very low power consumption on our machine. The surface finish on the shoulder is excellent."

⭐⭐⭐⭐⭐ "Economic 4-Edges" - L. Bernard, France
"Having 4 edges on such a small insert is great for the budget. No quality trade-off either."

⭐⭐⭐⭐⭐ "Genuine Japanese Quality" - S. Gupta, Singapore
"Fast delivery and original Tungaloy parts. The precision is unmatched for small batch high-value parts."

Technical Tooling Q&A

Q: Is AH130 better than AH725 for stainless steel?

A: AH130 is superior for austenitic stainless steel and titanium due to its increased thermal resistance. AH725 is a better all-rounder for general steel and cast iron.

Q: What is the main benefit of the ML chipbreaker?

A: The ML is a 'Light Cut' geometry. It is sharper than the MJ breaker, which helps avoid work-hardening on the surface of stainless parts and reduces spindle load.

Q: Which cutters do I need for LNMU0303?

A: It is compatible with the Tungaloy TungForce-Rec series (EXLS or TXP holders). Always match the seat size for Series 03 inserts.

Expert Insight: AH130 Grade Logic

In high-performance milling, AH130 is a specialized PVD grade designed to handle the localized heat and high pressure of Superalloys (S) and Stainless (M). By using the ML breaker, you ensure the sharpest entry possible into the material, which is critical for maintaining tool life and tight tolerances in CNC machining.

© Technical Content by cnchome-beyond.com - Japan Tooling Excellence

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.