Tungaloy RCMM1003MO-61 NS9530 Insert
Round Positive Turning | 61 Finishing Chipbreaker | Premium NS9530 Cermet
What is the best cermet insert for achieving a mirror finish on steel?
The Tungaloy RCMM1003MO-61 NS9530 is a high-precision round cermet turning insert designed for high-speed finishing operations. Utilizing the advanced NS9530 cermet grade, this insert offers exceptional oxidation resistance and low chemical affinity with steel, preventing built-up edge and ensuring a superior, mirror-like surface finish. The 61 chipbreaker is specifically engineered for light-duty finishing, providing excellent chip control at small depths of cut. As a genuine Japan-made CNC turning insert, the RCMM round geometry provides incredible edge strength and versatility, making it ideal for profiling and heavy-duty finishing where surface integrity is critical.
Decoding the RCMM1003MO-61 Technical Nomenclature
R
Round
C
7° Relief
M
Tolerance
M
Fixing
10
Size
03
Thickness
MO
Edge
61
Breaker
Technical Specs: Metric vs. Imperial Comparison
| Parameter |
Metric Designation |
Imperial Designation |
| Inscribed Circle (IC) |
10.0 mm |
0.394 inch |
| Thickness (S) |
3.18 mm |
1/8 inch |
| Corner Radius (RE) |
5.0 mm (Full Round) |
0.197 inch |
| Hole Diameter (D1) |
3.6 mm |
0.142 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
*Pro Tip: For the best surface finish, use dry machining with NS9530 cermet. Round inserts (RCMM) provide excellent strength for profiling operations on high-value steel components.*
Global Verified Customer Reviews
⭐⭐⭐⭐⭐ "Mirror Surface Success" - Lars O., Sweden
"We were looking for a high-finish insert for 1018 steel shafts. The NS9530 grade delivered a beautiful shine with no polishing needed."
⭐⭐⭐⭐⭐ "Amazing Edge Strength" - Takeshi M., Japan
"The RCMM round geometry is very stable. Even with some vibration in the setup, the cermet didn't chip at high speeds."
⭐⭐⭐⭐ "Great Chip Control" - Brian J., UK
"The 61 breaker works perfectly for fine finishing. Chips are broken into small needles even at light cuts."
⭐⭐⭐⭐⭐ "Cost-Effective Cermet" - Luc F., France
"A round insert allows us to rotate multiple times for new edges. Great economy combined with Tungaloy precision."
⭐⭐⭐⭐⭐ "Fast Delivery & Original" - P. Kumar, India
"Authentic Tungaloy Japan quality. The NS9530 is a lifesaver for our precision turning department."
Technical Tooling Q&A
Q: Can I use this insert for stainless steel turning?
A: Cermet is best for steel. For stainless steel, we recommend PVD coated carbide like AH725 to prevent notch wear.
Q: What is the benefit of a round (RCMM) insert shape?
A: Round inserts have the strongest cutting edge. They are perfect for profile turning and allow for variable lead angles depending on the depth of cut.
Q: Should I use coolant with NS9530 cermet?
A: For cermet finishing, dry cutting is often preferred to avoid thermal shock, but if using coolant, ensure it is a continuous, heavy flow.
Expert Insight: Cermet Finishing (NS9530)
In high-precision turning, NS9530 is a premier cermet grade designed to excel where carbide fails. It offers higher hardness and better chemical stability at high temperatures. Combined with the RCMM1003 geometry, it provides the ultimate solution for mirror-finish machining on all types of general steels.
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