Tungaloy RCMT0803MO-61 T9115 Insert
Professional Round Turning | 61 Finishing Breaker | Premium T9115 CVD Grade
What is the most durable round insert for high-speed steel finishing?
The Tungaloy RCMT0803MO-61 T9115 is an industry-leading round carbide turning insert engineered for high-productivity steel machining. Featuring the advanced T9115 CVD coated grade, this insert is built to withstand extreme temperatures and maintain edge sharpness during continuous high-speed cutting. The 61 chipbreaker is specialized for light-duty finishing, providing exceptional chip control and reducing cutting forces. This Japan-made CNC turning insert is the ultimate choice for profiling and machining carbon and alloy steels where surface integrity and tool life are the top priorities.
Superior T9115 Coating
Multi-layered CVD coating with a thick Al2O3 layer provides unmatched thermal protection and resistance to plastic deformation.
Maximum Edge Strength
The RCMT round geometry eliminates weak corners, making it perfect for heavy profiling and varying feed directions.
Optimized 61 Breaker
Specifically designed for shallow finishing cuts, ensuring small, manageable chips and a superior surface finish.
Decoding the RCMT0803MO-61 Technical Designation
R
Round
C
7° Relief
M
Tolerance
T
Hole/Fix
08
8mm Size
03
3.18mm Thick
MO
Tip Style
61
Breaker
3. Technical Specifications: Metric vs. Imperial
| 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 (T9115 Grade)
-
Cutting Speed (Vc): 180 - 450 m/min (Depending on steel alloy)
-
Feed Rate (f): 0.05 - 0.25 mm/rev (Ideal for 61 chipbreaker)
-
Depth of Cut (Ap): 0.2 - 2.0 mm (Flexible range)
*Pro Advice: Higher cutting speeds help in reducing material sticking on the tool tip in low-carbon steel applications.*
4. Product Applications
- Profiling and finishing of carbon and alloy steels.
- Large-diameter shaft finishing in automotive and energy.
- High-feed semi-finishing of precision mold components.
- CNC Lathe profiling on rigid, high-RPM machines.
5. Tool Compatibility
Perfectly compatible with standard SRGCR/L or SRDCN turning tool holders designed for 8mm round inserts (ISO Size 0803). Designed for maximum stability in high-production environments.
7. Why Choose CNCHome-Beyond?
100% Genuine
Original Tungaloy Japan
OEM Authority
Supplier to Geely Auto
Technical Experts
Optimized Parameter Support
Global Shipping
Fast Delivery Worldwide
Global Verified Reviews
⭐⭐⭐⭐⭐ "High-Speed Beast" - J. Hoffman, Germany
"T9115 is simply the best for continuous turning. We ran this RCMT0803 at 420 m/min and the wear was negligible even after a full shift."
⭐⭐⭐⭐⭐ "Strong Round Geometry" - Takeshi S., Japan
"Profiling complex radii is so much safer with round inserts. No corner chipping like CNMG. Tungaloy Japan quality is obvious."
⭐⭐⭐⭐ "Great for Light Finish" - Mark R., USA
"The 61 breaker handles shallow depths perfectly. No long chips wrapping around the spindle."
⭐⭐⭐⭐⭐ "Consistent Tool Life" - Luca B., Italy
"Excellent consistency. When you swap an insert, the offsets barely move. Great for automation."
⭐⭐⭐⭐⭐ "Fast Delivery" - A. Miller, UK
"Genuine parts arrived on time. The performance in 4140 steel is night and day compared to generic brands."
8. FAQ - Common Technical Questions
Q: Is T9115 suitable for interrupted cutting?
A: T9115 is optimized for continuous high-speed turning. For interrupted cuts, we recommend a grade like T9125 or Tungaloy's PVD grades.
Q: Can I use this on Stainless Steel?
A: T9115 is an ISO P (Steel) grade. For Stainless Steel (ISO M), please check Tungaloy AH630 or AH645 grades.
Q: What is the benefit of the 61 chipbreaker?
A: It is designed for 'Light Cut' finishing. It provides low cutting resistance and excellent chip evacuation in shallow cuts.
Expert Insight: The CVD T9115 Advantage
In high-productivity CNC turning, the T9115 grade's thick alumina (Al2O3) layer acts as a massive thermal barrier. This prevents crater wear and heat-induced plastic deformation at the cutting edge, allowing the RCMT0803 to maintain dimensional precision and mirror-like finishes over massive production batches.
© Technical Data by cnchome-beyond.com - Industrial Excellence
