Tungaloy ONMU0705ANPN-MJ AH725 Double-Sided Octagonal Milling Insert

$143.88 USD

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

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Description

Tungaloy ONMU0705ANPN-MJ AH725 Insert

DoOcto Double-Sided 16-Edge Milling | MJ Chipbreaker | Made in Japan

What is the most economical face milling insert for steel and stainless?

The Tungaloy ONMU0705ANPN-MJ AH725 is a high-productivity indexable milling insert from the elite DoOcto series. This insert features a unique octagonal double-sided design that provides an incredible 16 cutting edges per insert, making it one of the most cost-effective solutions in the industry. The AH725 PVD coated grade offers a perfect synergy of a tough carbide substrate and a wear-resistant coating, excelling in general steel and stainless steel machining. With the MJ medium-duty chipbreaker, it ensures low cutting force and excellent chip control. As a genuine Japan-made face milling insert, it is engineered to deliver high metal removal rates and superior surface finish Ra in rigorous CNC machining environments.

Decoding the ONMU0705ANPN-MJ Nomenclature

O
Octagonal
N
0° Relief
M
Tolerance
U
Fixing
07
Size
05
Thickness
ANPN
Edges
MJ
Breaker

Technical Specs: Metric vs. Imperial Units

ISO Parameter Metric Unit Imperial Designation
Inscribed Circle (IC) 15.875 mm 5/8 inch
Insert Thickness (S) 5.45 mm 0.215 inch
Wiper Width (BS) 2.0 mm 0.0787 inch
Model Number ONMU0705 ONMU 544

Recommended Cutting Parameters (AH725 Grade)

  • Cutting Speed (Vc): 100 - 250 m/min (Carbon & Alloy Steel)
  • Feed per Tooth (fz): 0.15 - 0.40 mm/t (Optimized for MJ breaker)
  • Max Depth of Cut (Ap): 3.5 mm (Ensure rigid setup)

*Pro Tip: For heavy face milling, ensure the cutter body is fully supported. The 16-edge design allows for extreme cost-per-edge reduction. Dry machining is often preferred for AH725 to maximize thermal resistance.*

Global Verified Customer Reviews

⭐⭐⭐⭐⭐ "Unbeatable Cost Efficiency" - Hans R., Germany
"16 edges on one insert is incredible. We halved our tooling costs for surface milling 1045 steel blocks."

⭐⭐⭐⭐⭐ "Stable and Reliable" - Y. Tanaka, Japan
"Very stable cutting even at 3mm depth of cut. AH725 remains the most versatile grade for our job shop."

⭐⭐⭐⭐ "Great Wall Finish" - Mike D., USA
"The octagonal shape gives a much better finish than square inserts at high feed. Minimal burr on stainless."

⭐⭐⭐⭐⭐ "Long Lasting AH725" - Alessandro V., Italy
"We use these for roughing and finishing. The PVD coating is very tough against thermal shock."

⭐⭐⭐⭐⭐ "Authentic Product" - S. Lee, Singapore
"Fast shipping and genuine Tungaloy inserts. Precision is consistent across all 16 edges."

Technical Tooling Q&A

Q: Can I use ONMU0705 for 90-degree shoulder milling?

A: No, the octagonal shape is designed specifically for 45-degree lead angle face milling. For 90-degree shoulders, please use the TungForce-Rec series.

Q: What is the benefit of a 45-degree lead angle?

A: It thins the chips, allowing for higher feed rates and directing cutting forces toward the spindle, which increases stability and tool life.

Q: How do I know when to rotate the insert?

A: Each edge is numbered on the insert. Simply rotate to the next number when you notice flank wear or a drop in surface finish quality.

Expert Insight: 16-Edge Value Proposition

In CNC face milling, the ONMU0705 with AH725 grade provides a massive advantage in throughput. By utilizing 16 edges, shops can maintain longer unattended runs. The 45-degree angle reduces vibration, protecting your machine spindle while delivering precision machining results on every pass.

© 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.