Tungaloy DCGT11T302FR-J10 SH725 Turning Insert
Ultra-Precision Finishing | SH725 PVD Toughness | Made in Japan
What is the best carbide insert for finishing small stainless steel parts?
The Tungaloy DCGT11T302FR-J10 SH725 is a high-accuracy precision finishing turning insert specifically engineered for high-demand applications in steel, stainless steel, and superalloys. The SH725 grade is a specialized PVD coated carbide that offers a perfect synergy of edge sharpness and heat resistance, preventing the common "built-up edge" (BUE) found in sticky materials. This indexable turning tool features the -J10 chipbreaker, a ground-periphery geometry designed to produce mirror-like surface Ra values while maintaining tight tolerances. Whether you are running CNC machining operations on medical components or aerospace fasteners, this Japan-made precision machining insert provides extended tool life and consistent performance in light-duty finishing passes. By choosing this long-tail keywords optimized insert, you ensure process security for your most delicate workpieces.
Decoding the DCGT11T302FR-J10 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
FR
Right Hand
Technical Specs: Metric vs. Imperial Comparison
| Standard Detail |
Metric Designation |
Imperial Equiv. |
| Product Model |
DCGT11T302FR-J10 |
DCGT32.50.5FR-J10 |
| Inscribed Circle (IC) |
9.525 mm |
3/8 inch |
| Corner Radius (RE) |
0.2 mm |
0.008 inch |
How does the SH725 grade improve tool life in small-part turning?
The SH725 PVD Grade utilizes a multi-layered coating technology that provides extreme hardness and high thermal resistance. Unlike traditional grades, SH725 maintains its cutting edge integrity even when machining work-hardening materials like stainless steel. The -J10 chipbreaker is specifically designed for finish-turning with low cutting forces. Its highly positive rake angle ensures that the chips are curled and broken efficiently at low feed rates, preventing damage to the finished surface. In precision machining, this indexable turning tool is essential for shops looking to reduce cycle times and eliminate secondary finishing operations. For CNC machining of slender or small-diameter parts, the sharp edge of the DCGT11T302 prevents deflection and ensures dimensional stability.
Recommended Cutting Parameters for SH725
-
Cutting Speed (Vc): 50 - 160 m/min (Material dependent)
-
Feed Rate (f): 0.03 - 0.12 mm/rev
-
Depth of Cut (ap): 0.1 - 1.0 mm
*Pro Tip: For medical-grade stainless, aim for the mid-range speed and ensure high-quality lubricant is used.*
Feedback from Global Precision Workshops
⭐⭐⭐⭐⭐ "Mirror Finish on Stainless" - David K., USA
"We turn 316 stainless medical parts. The SH725 grade gives us a finish that we used to only get with grinding. Incredible precision."
⭐⭐⭐⭐⭐ "Extremely Sharp Edge" - Stefan M., Germany
"The J10 geometry is very sharp. No deflection even on long thin shafts. Tungaloy Japan quality is world-class."
⭐⭐⭐⭐ "Very Stable Performance" - Luca B., Italy
"Predictable tool life. We run these on our Citizen Swiss lathes and the offsets stay stable all day."
⭐⭐⭐⭐⭐ "Best for Finish Passes" - Hiroshi Y., Japan
"High precision G-tolerance. If you need a exact diameter, this is the insert to use. SH725 is very tough."
⭐⭐⭐⭐⭐ "Authentic and Fast" - Liam S., Australia
"Original Tungaloy. The 0.2mm radius is perfect for fine detailing. Performance is exactly per the technical sheet."
Technical Tooling Q&A
Q: Is SH725 better than J740 for finishing?
A: SH725 is generally tougher and better for high-heat applications or difficult-to-cut materials like Heat Resistant Super Alloys (HRSA), while J740 is a great general-purpose steel finishing grade.
Q: Can I use this for roughing?
A: No. The DCGT11T302 is a precision finishing insert. The sharp edge and small 0.2mm radius will fail immediately under heavy roughing loads.
Q: What tool holder is compatible?
A: This insert fits any standard ISO holder for DCGT 11T3 inserts, such as SDJCR/L or SDNCN styles.
Expert Tip: Tooling for Exotic Alloys
For precision machining of titanium or Inconel, PVD Coated Carbide (SH725) is the industry benchmark. The combination of the J10 breaker and SH725 ensures that you maintain the sharpest edge possible, which is key to preventing surface hardening and maximizing tool life.
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