Tungaloy TCMT110202-PS AH725 Turning Insert
Ultra-Precision Steel Finishing | Advanced AH725 PVD Coating | 0.2mm Radius
What is the best insert for high-precision finishing on small CNC lathes?
The Tungaloy TCMT110202-PS AH725 is a specialized triangular indexable insert designed for the most demanding precision finishing tasks. Utilizing the AH725 PVD coated carbide grade, this insert offers an incredibly sharp cutting edge combined with high wear resistance, making it ideal for ISO P (Steel) and ISO M (Stainless Steel) applications. The -PS chipbreaker is specifically optimized for ultra-light depths of cut, while the 0.2mm corner radius (02) allows for intricate profiles and superior surface Ra values. 100% Made in Japan, it ensures absolute consistency for high-end industrial manufacturing.
AH725 Grade Tech
A premium PVD coating that maintains edge sharpness while providing a barrier against built-up edge (BUE). Perfect for finishing sticky materials like stainless and low-carbon steels.
-PS "Power Sharp" Breaker
Designed for high-precision finishing. The -PS geometry breaks chips effectively even at extremely low feed rates, ensuring a clean workpiece surface without scratches.
0.2mm Corner Radius
The ultra-small radius allows for machining tight corners and intricate details, reducing cutting force and vibration on small diameter workpieces.
Decoding TCMT110202-PS Technical Nomenclature
T
Triangular
C
7° Relief
M
Tolerance
T
Hole/Fix
11
11mm L
02
2.38mm Thk
02
0.2mm Rad.
-PS
Chipbreaker
3. Technical Specifications: Metric vs. Imperial
| Parameter |
Metric (ISO) |
Imperial Equivalent |
| Cutting Edge Length (L) |
11.0 mm |
TCMT 21.50.5 |
| Inscribed Circle (IC) |
6.35 mm |
1/4" |
| Thickness (S) |
2.38 mm |
3/32" |
| Corner Radius (RE) |
0.2 mm |
0.008" |
Recommended Cutting Parameters (AH725)
-
Cutting Speed (Vc): 70 - 180 m/min
-
Feed Rate (f): 0.02 - 0.12 mm/rev
-
Depth of Cut (ap): 0.05 - 1.2 mm
*Pro Tip: For ultra-fine finishes, use a lower feed rate (approx. 0.04 mm/rev) and a higher cutting speed within the recommended range to minimize pressure on the 0.2mm radius.*
4. Product Applications
- Precision turning of small-diameter automotive shafts.
- Final finishing passes on stainless steel medical components.
- Intricate internal boring on CNC Swiss-type lathes.
- Machining high-precision alloy steel parts with tight Ra requirements.
5. Tool Compatibility
Compatible with standard Tungaloy / ISO boring bars and external shanks designed for TCMT 1102 size inserts (1/4" IC). Commonly used in S-STFCR/L boring bars.
7. Why Choose CNCHome-Beyond?
Genuine Tungaloy
100% Original Made in Japan
Technical Support
Expert B2B machining advice
Global Logistics
Fast shipping for industrial lines
Factory Sourcing
Stable inventory for B2B buyers
Machinist Feedback from the Field
⭐⭐⭐⭐⭐ "Perfect for Precision" - Alexander V., Germany
"The 0.2mm radius is a lifesaver for our small diameter precision work. AH725 stays sharp much longer than cheaper coatings."
⭐⭐⭐⭐⭐ "Outstanding Finish" - James W., USA
"Using these on stainless steel. The -PS breaker is great; no more stringy chips wrapping around the spindle."
⭐⭐⭐⭐ "Very Sharp" - Kenji H., Japan
"Consistent quality we expect from Tungaloy. These inserts are very sharp out of the box. Highly accurate."
⭐⭐⭐⭐⭐ "Reliable B2B Partner" - Tan M.K., Singapore
"Fast delivery from CNCHome-Beyond. These original inserts helped us clear a backlog of high-precision shafts."
⭐⭐⭐⭐⭐ "Smooth Results" - Paolo G., Italy
"The surface Ra we get with this insert is incredible. No further polishing needed on our alloy steel parts."
8. FAQ - Machining Solutions
Q: Is AH725 suitable for dry machining?
A: While it can handle dry cuts in certain steels, AH725 performs best with high-pressure coolant to maximize tool life and maintain the sharp finishing edge.
Q: What makes the 0.2mm radius different from 0.4mm?
A: The 0.2mm radius (02) produces lower cutting forces and is better for intricate details, but it is more sensitive to high feed rates than a 0.4mm (04) radius.
Q: Does this insert fit a standard TCMT 1102 holder?
A: Yes, it uses the standard ISO TCMT 1102 dimensions (1/4" Inscribed Circle), ensuring compatibility with any brand holder of this size.
Expert Comparison: PVD vs. CVD
The **PVD AH725** grade is optimized for high-precision finishing and avoiding built-up edge. If you are doing heavy-duty roughing or high-speed continuous cutting in carbon steel, you may want to look at a **CVD grade** like T9125. For precision and edge sharpness, **Tungaloy Japan** is the industrial standard.
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