Tungaloy RCMT0803MO-61 NS9530 Round Cermet Turning Insert

$48.64 USD

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Description

Tungaloy RCMT0803MO-61 NS9530 Insert

Precision Round Turning | 61 Finishing Breaker | Premium NS9530 Cermet

How do I achieve a mirror-like surface finish on steel shafts?

The Tungaloy RCMT0803MO-61 NS9530 is a high-performance round cermet turning insert specifically engineered for high-speed finishing operations. Utilizing the advanced NS9530 cermet grade, this insert offers exceptional chemical stability and oxidation resistance, which effectively prevents built-up edge (BUE) and results in an ultra-smooth surface Ra. The 61 chipbreaker is designed for light-duty finishing, ensuring consistent chip management at high velocities. As a genuine Japan-made CNC turning insert, its round geometry provides the highest edge strength for profiling and demanding finishing cuts on carbon and alloy steels.

High-Speed Finishing

NS9530 grade excels at high cutting speeds (up to 350 m/min), reducing cycle times while maintaining precision.

Maximum Edge Strength

The round (RCMT) geometry eliminates weak corners, making it ideal for profiling and heavy-duty finishing.

61 Chipbreaker Design

Engineered for light depths of cut, providing low cutting forces and excellent surface integrity.

Decoding the RCMT0803MO-61 Nomenclature

R
Round
C
7° Relief
M
Tolerance
T
Hole/Fix
08
8mm Size
03
3.18mm Thick
MO
Surface
61
Breaker

Technical Specifications: Metric vs. Imperial Units

ISO Parameter Metric Designation Imperial Designation
Inscribed Circle (IC) 8.0 mm 0.315 inch
Thickness (S) 3.18 mm 1/8 inch
Corner Radius (RE) 4.0 mm (Full Round) 0.157 inch
Hole Diameter (D1) 3.4 mm 0.134 inch

Recommended Cutting Parameters (NS9530 Grade)

  • Cutting Speed (Vc): 150 - 350 m/min (Finishing Steel)
  • Feed Rate (f): 0.05 - 0.25 mm/rev (Optimized for 61 chipbreaker)
  • Depth of Cut (Ap): 0.2 - 1.5 mm

*Expert Tip: Cermet inserts perform best under dry machining conditions or with high-pressure air to prevent thermal shock and edge chipping.*

4. Product Applications

  • High-speed finishing of carbon and alloy steels.
  • Profiling operations on intricate automotive shafts.
  • Machining of mold and die steel with high finish requirements.
  • CNC Lathe profiling on Swiss-type and standard machines.

5. Tool Compatibility

Compatible with standard SRGCR/L or SRDCN turning tool holders designed for 8mm round positive inserts (Size 0803). Suitable for high-RPM precision spindles.

7. Why Choose CNCHome-Beyond?

100% Genuine
Original Tungaloy Japan
OEM Partnership
Geely Auto Supplier
Expert Support
CNC Tooling Professionals
Global Logistics
Fast Shipping Worldwide

Global Verified Reviews

⭐⭐⭐⭐⭐ "Mirror Surface Success" - Marco V., Italy
"The finish on our steel rollers is like glass. NS9530 cermet is far superior to carbide for this application."

⭐⭐⭐⭐⭐ "Very Stable Round Edge" - Takeshi H., Japan
"Round geometry is much stronger for profiling than standard diamond inserts. No chipping at high RPM."

⭐⭐⭐⭐ "Great Chip Control" - Brian L., USA
"The 61 breaker works perfectly on fine finishing passes. No bird-nesting on our Swiss lathes."

⭐⭐⭐⭐⭐ "Fast Shipping & Genuine" - Dieter G., Germany
"Authentic Tungaloy parts. The cermet grade is consistent and the tool life is excellent."

⭐⭐⭐⭐⭐ "Perfect for Precision" - S. Ramesh, Singapore
"Consistent dimensions over long runs. Essential for our precision turning department."

8. FAQ - Common Technical Questions

Q: Can I use this insert for roughing?

A: No, cermet is brittle compared to carbide. It is strictly for semi-finishing and high-precision finishing operations.

Q: Is it suitable for stainless steel?

A: Cermet is best for carbon and alloy steels. For stainless steel, we recommend PVD coated carbide like AH725 for better stability.

Q: Does it fit any round tool holder?

A: It fits any SRGCR/L or SRDCN holder designed for 8mm IC round positive inserts (Size 0803).

Expert Insight: The Cermet Advantage

In CNC finishing, cermet (NS9530) provides higher chemical stability than carbide at high temperatures. This prevents material from "sticking" to the tool edge, which is the key to achieving the RCMT0803 mirror-like finish and ensuring long-term precision machining performance.

© Technical Content by cnchome-beyond.com - Japan 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.