Tungaloy DCGT11T302FN-JS SH730 Turning Insert
High-Precision Finishing Master | SH730 Wear-Resistance PVD | Made in Japan
What is the best carbide insert for high-speed finishing of stainless steel?
The Tungaloy DCGT11T302FN-JS SH730 is a premium precision machining solution engineered for the most demanding finishing operations. Featuring the advanced SH730 PVD grade, this insert offers an upgraded coating hardness compared to previous generations, providing exceptional resistance to crater wear and oxidation. The -JS chipbreaker geometry is a "ground periphery" style designed for light-duty finishing passes, ensuring that cutting forces remain low to prevent vibration and workpiece deflection. This Japan-made indexable turning tool is ideal for CNC machining of small-diameter components in medical and aerospace sectors. By utilizing this long-tail keywords optimized insert, your shop can achieve sub-micron surface Ra values while maintaining significant tool life in high-velocity cutting environments.
Decoding the DCGT11T302FN-JS Technical Nomenclature
D
55° Rhombic
C
7° Clearance
G
G-Tolerance
T
Hole & Screw
11
11.6mm Edge
T3
3.97mm Thick
02
0.2mm Radius
FN-JS
Neutral Finish
Technical Specs: Metric vs. Imperial Comparison
| ISO Detail |
Metric Unit |
Imperial Unit |
| ISO Model |
DCGT11T302FN-JS |
DCGT32.50.5-JS |
| Inscribed Circle (IC) |
9.525 mm |
3/8 inch |
| Corner Radius (RE) |
0.2 mm |
0.008 inch |
How does the SH730 grade handle sticky materials?
The SH730 Grade represents the pinnacle of PVD Coated Carbide technology. It is specifically formulated to handle the heat and stickiness of Austenitic Stainless Steel and Duplex alloys. The -JS chipbreaker geometry is neutral (N), allowing for high-precision finishing in both directions when using specialized Swiss-type tool paths. In precision machining, having a ground periphery insert like the DCGT11T302FN-JS ensures that the edge is as sharp as possible, leading to reduced burr formation and a "cleaner" cut. For shops running high-performance CNC machining lathes, SH730 provides the thermal stability needed to increase cutting speeds without sacrificing part accuracy.
Recommended Cutting Parameters for SH730
-
Cutting Speed (Vc): 80 - 200 m/min
-
Feed Rate (f): 0.03 - 0.12 mm/rev
-
Depth of Cut (ap): 0.10 - 1.20 mm
*Optimization Tip: Use high-pressure coolant directed exactly at the cutting zone to maximize the crater resistance of the SH730 coating.*
Feedback from Global Precision Workshops
⭐⭐⭐⭐⭐ "Mirror Surface" - David R., USA
"Switching to SH730 on our stainless parts made a huge difference. The Ra finish is consistent through the whole batch."
⭐⭐⭐⭐⭐ "Best for Finish Passes" - M. Schneider, Germany
"Extremely sharp edge and very tight tolerances. Tungaloy Japan quality is unbeatable for precision components."
⭐⭐⭐⭐ "Great Chip Control" - Giovanni L., Italy
"The JS breaker is perfect for light finishing. No more bird-nesting on our Swiss lathes."
⭐⭐⭐⭐⭐ "Stable Tool Life" - Kenji T., Japan
"High stability in high-speed applications. SH730 is a great upgrade over the older SH725 for heat resistance."
⭐⭐⭐⭐⭐ "Authentic Quality" - Liam F., Australia
"Genuine product, very well packaged. Performance on alloy steel finishing is top-notch."
Technical Tooling Q&A
Q: Is SH730 harder than SH725?
A: Yes, SH730 has higher hardness and improved thermal resistance, making it more suitable for high-speed finishing and difficult stainless materials.
Q: Can I rough with the JS chipbreaker?
A: No. The -JS breaker is designed specifically for small depths of cut and light finishing. Roughing will likely cause edge breakage.
Q: What holder does this fit?
A: It fits any standard DCGT 11T3 holder, including SDJCR, SDJCL, and SDNCN series tool holders.
Material Choice Tip: SH730 vs. CVD
While CVD coatings are thick and tough for heavy roughing, PVD Coated Carbide like SH730 is essential for precision machining. The thinner PVD layer allows for a sharper micro-edge, providing the superior surface finish required for high-precision components.
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