Tungaloy DCGT11T304FN-JS SH730 Precision Finishing Turning Insert

$98.85 USD

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

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Description

Tungaloy DCGT11T304FN-JS SH730 Turning Insert

High-Precision Finishing Master | Advanced SH730 PVD | Made in Japan

What is the best carbide insert for finishing stainless steel at high speeds?

The Tungaloy DCGT11T304FN-JS SH730 is a premium precision machining solution engineered for the most demanding finishing operations. Featuring the advanced SH730 PVD grade, this insert offers upgraded thermal stability and coating hardness, providing exceptional resistance to crater wear and oxidation. The -JS chipbreaker geometry is a ground-periphery style designed specifically for light-duty finishing passes, ensuring that cutting forces remain low to prevent vibration on slender workpieces. This Japan-made indexable turning tool with a 0.4mm radius is ideal for CNC machining components in medical, automotive, and aerospace sectors. By utilizing this long-tail keywords optimized insert, your shop can achieve sub-micron surface Ra values while maintaining a long tool life in high-velocity environments.

Decoding the DCGT11T304FN-JS Technical Nomenclature

D
55° Rhombic
C
7° Clearance
G
G-Tolerance
T
Hole & Screw
11
11.6mm Edge
T3
3.97mm Thick
04
0.4mm Radius
FN-JS
Neutral Finish

Technical Specs: Metric vs. Imperial Comparison

ISO Specification Metric Unit Imperial Equiv.
ISO Model Name DCGT11T304FN-JS DCGT32.51FN-JS
Inscribed Circle (IC) 9.525 mm 3/8 inch
Corner Radius (RE) 0.4 mm 0.016 inch

Why is the SH730 grade superior for sticky materials?

The SH730 Grade represents the cutting edge of PVD Coated Carbide technology. It is specifically formulated to handle the high temperatures and work-hardening tendencies of Austenitic Stainless Steel and Duplex alloys. The -JS chipbreaker geometry features a ground periphery and a highly positive rake angle. In precision machining, this combination ensures chips are curled and broken efficiently even at very shallow depths of cut. For high-stability CNC machining, the 0.4mm radius of the DCGT11T304FN-JS provides extra edge strength, making it more resistant to chipping during interrupted cuts than smaller radii while still producing a superior surface finish.

Recommended Cutting Parameters for SH730

  • Cutting Speed (Vc): 80 - 200 m/min
  • Feed Rate (f): 0.05 - 0.15 mm/rev
  • Depth of Cut (ap): 0.20 - 1.50 mm

*Optimization Tip: Use high-pressure through-coolant to effectively evacuate chips and fully utilize the thermal resistance of the SH730 coating.*

Feedback from Global Precision Workshops

⭐⭐⭐⭐⭐ "Mirror Surface Finish" - Robert K., USA
"We use these for finishing passes on 304 stainless. The SH730 grade lasts significantly longer than the SH725 in our high-speed cycles. Very clean finish."

⭐⭐⭐⭐⭐ "Excellent Edge Strength" - M. Lehmann, Germany
"Tungaloy Japan quality is obvious here. The 0.4mm radius is very stable, and the JS breaker prevents any bird-nesting issues on our Swiss lathes."

⭐⭐⭐⭐ "Great Stability" - Luca G., Italy
"Predictable tool life and very tight G-tolerances. When you need consistency in precision turning, SH730 is the way to go."

⭐⭐⭐⭐⭐ "High Speed Master" - Sato T., Japan
"Impressive resistance to crater wear. We've increased our cutting speeds by 20% compared to other PVD grades with no loss in accuracy."

⭐⭐⭐⭐⭐ "Original Quality" - Liam J., UK
"Fast delivery of genuine Tungaloy inserts. Performance matches the catalog specs exactly. Perfect for precision alloy steel finishing."

Technical Tooling Q&A

Q: Is SH730 better than SH725 for stainless steel?

A: Yes. SH730 is an upgraded grade with higher hardness and thermal resistance, making it superior for high-speed finishing and difficult, sticky stainless materials.

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

A: It is designed for light-duty finishing. The sharp, positive geometry curls chips tightly even at small depths of cut, protecting the surface Ra from scratches.

Q: Can I use this for roughing operations?

A: No. These are strictly for precision finishing. Roughing will likely cause edge fracture due to the ultra-sharp geometry.

Expert Insight: Choosing SH730 for Productivity

In precision machining, heat is the enemy of tool life. While CVD coatings are tough, PVD Coated Carbide like SH730 allows for a much sharper micro-edge. This enables faster cutting speeds without the edge deformation seen in lower-tier grades, keeping your parts within tolerance for longer.

© 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.