Mitsubishi RPMT1606MOE-JS VP15TF Round Insert | MMC Japan
Mitsubishi RPMT1204MOE-JS VP15TF Milling Insert | Genuine MMC
Mitsubishi RPMT1204MOE-JS F7030 Round Insert | Genuine MMC
Mitsubishi RPMT10T3MOE-JS VP15TF Round Insert | Genuine MMC
Mitsubishi RPMT08T2MOE-JS VP15TF Milling Insert | Genuine MMC
Mitsubishi RCMX1204MO US735 Round Turning Insert | MMC Japan
Mitsubishi RCMX1204MO UE6110 Round Turning Insert | Genuine MMC
Mitsubishi RCMX1204MO NX2525 Cermet Turning Insert | Genuine MMC
Mitsubishi RCMX1003MO NX2525 Cermet Insert | Precision Finishing
Mitsubishi RCMX1003MO US735 Round Turning Insert | Genuine Japan
Mitsubishi RCMT0803MO US735 Round Turning Insert | Genuine Japan
Mitsubishi RCMT0803MO UE6110 Round Turning Insert | Genuine MMC
Mitsubishi RCMT0803MO NX2525 Cermet Insert | High-Speed Finishing
Mitsubishi RCMT0602MO US735 Round Turning Insert | MMC Japan
Mitsubishi RCMT0602MO UE6110 Round Insert | Genuine MMC
About Mitsubishi RC/RP Round Inserts
Mitsubishi Materials (三菱マテリアル) round inserts — RCMT / RCMX / RPMT — are full-circumference carbide tools with 8 cutting edges per insert, the highest edge count of any insert geometry. The round geometry provides the strongest cutting edge (because of the full-circle cross-section) and the highest metal-removal rate for heavy roughing operations. Mitsubishi's round line is split into three families: RCMT (turning, with chip-breaker, MO = flat top), RCMX (turning, MO flat top, no chip-breaker, for heaviest cuts), and RPMT (milling, with chip-breaker for face mills). Every insert on this page is genuine OEM Mitsubishi product manufactured at Mitsubishi's Kyushu Japan facilities. CNCHome-Beyond is an authorized Mitsubishi distributor; orders placed before 3 PM China time ship same-day from our Hangzhou warehouse with DHL/UPS/FedEx express delivery in 3-7 business days.
Why Round Inserts (vs Square/Rhombic/Triangle)?
| Property | Round (RCMT) | Square (SNMG) | 80° Rhombic (CNMG) | 55° Rhombic (DCMT) | Winner for Round |
|---|---|---|---|---|---|
| Cutting edges per insert | 8 (full circle) | 8 (4 per side) | 8 (4 per side) | 2 (1 per side) | Round: 8 edges + full circle = lowest per-edge cost |
| Edge strength | Highest (no corners) | High | High | Lower (acute) | Round: heavy roughing + interrupted cuts |
| Radial force (Fr) | Highest (large projected area) | Medium | Medium | Low | Round: rigid machines only |
| Max depth of cut (ap) | Up to 0.5 × IC | 0.5 × IC | 0.5 × IC | 0.6 × IC | Round: deep roughing (profiling convex surfaces) |
| Feed range (fn) | 0.10-0.40 mm/rev | 0.10-0.30 mm/rev | 0.10-0.30 mm/rev | 0.05-0.20 mm/rev | Round: high feed roughing |
| Surface finish | Good (curved edge) | Good (flat edge) | Better (sharp 80°) | Best (sharp 55°) | 55° wins for finish; Round wins for roughing |
| Best for | Heavy roughing, profiling | General turning, facing | General turning, profiling | Finishing, profiling | Round: when you need max edge count + strength |
When to choose round inserts: Use round (RCMT/RCMX/RPMT) when the operation demands heavy roughing at high feed rates on rigid machines, profiling convex surfaces (rounded workpieces), or long tool life on production runs (8 edges per insert vs 8 for square/80° rhombic, but with the strongest edge geometry). Round inserts are the most economical per cutting edge in heavy roughing applications. Avoid round for thin shafts (high radial force causes deflection) and for finishing (sharp 55° rhombic is better).
Mitsubishi Grade Family Reference (5 Grades for Round Inserts)
| Grade | Coating / Material | Workpiece | Recommended Speed | Best For |
|---|---|---|---|---|
| US735 | CVD (TiCN + thick Al2O3) | Stainless (M15-M35), steel heavy | 100-180 m/min | Stainless + steel heavy roughing workhorse |
| UE6110 | CVD (universal P-grade, tougher) | Steel (P15-P35) | 100-180 m/min | Steel general purpose (workhorse) |
| NX2525 | CVD 2nd-gen + cermet | Steel (P10-P30) + cermet | 100-200 m/min | Steel + cermet mirror finish at high speed |
| VP15TF | PVD (Al-rich TiAlN, "Miracle Coat") | Universal (P10-P30, M10-M25, S05-S20) | 100-220 m/min | Universal workhorse, stainless + high-temp alloys |
| F7030 | PVD (aluminum-specific, sharp edge) | Aluminum (N10-N25) | 300-1000 m/min | Aluminum milling, sharp edge prevents sticking |
For more details on Mitsubishi's grade naming convention (US/NX/VP/UE/F7 series), see our Mitsubishi CC/CP 80° Diamond collection which has a complete grade decoder section.
Mitsubishi Round Insert Geometry at a Glance
| Series | IC Size | Type | Operation | Best For |
|---|---|---|---|---|
| RCMT | 0602 (6mm) / 0803 (8mm) | Round, MO (with chip-breaker) | External + face turning, profiling | Turning with chip-breaker — 6 SKUs in this catalog |
| RCMX | 1003 (10mm) / 1204 (12mm) | Round, MO (flat top, no chip-breaker) | External + face turning, heavy roughing | Turning without chip-breaker — 4 SKUs, heaviest roughing |
| RPMT | 08T2 (8mm) / 10T3 (10mm) / 1204 (12mm) / 1606 (16mm) | Round positive, MOE-JS chip-breaker | Face milling, shoulder milling, profiling | Milling cutter inserts — 5 SKUs |
Need to compare with other brand round insert geometries? See our complete Insert Grade Cross-Reference Tool and SKU Cross-Reference for direct equivalents between Mitsubishi, Sandvik (RCMT/RCMX/R390), Kennametal (KRP), Iscar (RCMT), Walter (RPMT), Tungaloy, Kyocera, KORLOY, and ZCC·CT.
Mitsubishi Chip-Breaker Reference (2 Variants for Round)
Round inserts have simpler chip-breaker naming because of their limited number of variants:
| Chip-Breaker | Application | Best With Series |
|---|---|---|
| MO (flat top, no chip-breaker) | Heavy roughing, deep cuts, edge-prepped corners | RCMT + RCMX (turning) — most common |
| MOE-JS (milling chip-breaker + JS profile) | Face milling, profiling, smooth chip evacuation | RPMT (milling) — for face + shoulder mills |
How to Choose a Mitsubishi Round Insert
Step 1: Match the geometry to the operation. For turning (external + face) on round workpieces, choose RCMT (with chip-breaker) or RCMX (flat top, no chip-breaker for heaviest cuts). For milling (face + shoulder), choose RPMT.
Step 2: Match the grade to the workpiece material. Steel → UE6110 (workhorse) or NX2525 (cermet). Stainless → US735 (CVD) or VP15TF (PVD Miracle Coat). Cast iron → US735 (CVD stainless works for CI too). Aluminum → F7030 (PVD aluminum-specific, sharp edge). High-temp alloys (Inconel, titanium) → VP15TF (PVD Al-rich).
Step 3: Match the IC size to the operation. RCMT 0602 (6mm) for small lathe workpieces. RCMT 0803 (8mm) for general small turning. RCMX 1003 (10mm) for medium roughing. RCMX 1204 (12mm) for heavy roughing on large workpieces. RPMT 08T2-1606 (8-16mm) for face milling.
Step 4: Match the insert to the tool holder / cutter body. RCMT/RCMX fits industry-standard round-insert tool holders. RPMT fits Mitsubishi's face mill and shoulder mill bodies. CNCHome-Beyond carries compatible aftermarket holders at 30-50% below OEM — see our turning tool holder guide and Insert Holder Selector.
Compatible Tool Holders & Cutter Bodies
Mitsubishi round inserts fit the following CNCHome-Beyond tool holder families (all ISO 5610 standard, drop-in compatible with Mitsubishi OEM holders):
- Double-Clamp External Holders (CRDNN, CRGNR/L) — for heavy RCMT/RCMX roughing
- Multi-Lock External Holders (MCLNR/L) — for general RCMT medium cutting
- Lever-Lock (P-Type) External Holders — for quick-change high-mix production
- Screw-Clamp Boring Bars — for internal turning with round inserts
Need help matching round inserts to holders or face mill bodies? Use our Insert Holder Selector Tool for a guided 3-step match, or contact us for a custom face mill body quote.
Cross-Brand Equivalents to Mitsubishi Round Inserts
Mitsubishi round insert geometries are dimensionally interchangeable with other major brands. Direct equivalents:
| Mitsubishi | Sandvik | Kennametal | Iscar | Walter |
|---|---|---|---|---|
| RCMT 0803MO-MR US735 | RCMT 0803M0-MR GC4325 | KR083M-CP KC7315 | RCMT 0803M0-MR IC8150 | RPMT 0803MO-SM WPP10 |
| RCMX 1204MO US735 | RCMX 1204M0 GC4325 | KR1204M KC7315 | RCMX 1204M0 IC8150 | RPMX 1204MO WPP10 |
| RPMT 1204MOE-JS VP15TF | R390-11 04M0-PM GC4325 | KRP124M-FM KC7315 | RPMT 1204M0T IC9080 | RPMT 1204MOE-JS WPP10 |
| RPMT 10T3MOE-JS VP15TF | R390-11 03M0-PM GC4325 | KRP103M KC7315 | RPMT 10T3M0T IC9080 | RPMT 10T3MOE-JS WPP10 |
Looking for a Sandvik or Kennametal equivalent at lower cost? See Sandvik master catalog or KORLOY positive turning for direct alternatives. Use our Insert Grade Cross-Reference Tool for grade-to-grade equivalents across 17+ brands.
All 15 In-Stock Mitsubishi Round Inserts
Browse the complete catalog below, organized by family. All 15 inserts are genuine Mitsubishi OEM, in stock, and ship same-day from Hangzhou. Click any part number to view detailed specs, grade composition, and recommended cutting parameters.
RCMT Series — Round Turning with Chip-Breaker (6 SKUs)
The RCMT is Mitsubishi's standard round turning insert with chip-breaker on both faces. Two IC sizes (0602 and 0803) cover small to medium turning workpieces. The "MO" suffix indicates a flat top (no chip-breaker groove), but the insert has a chip-breaker land for partial chip control.
- RCMT0602MO US735 - 6mm IC, MO flat, CVD stainless heavy (workhorse, small)
- RCMT0602MO UE6110 - 6mm IC, MO flat, CVD steel workhorse (small)
- RCMT0803MO US735 - 8mm IC, MO flat, CVD stainless heavy (workhorse, medium)
- RCMT0803MO UE6110 - 8mm IC, MO flat, CVD steel workhorse (medium)
- RCMT0803MO NX2525 - 8mm IC, MO flat, cermet mirror finish (small lot)
- RCMX1003MO NX2525 - 10mm IC, MO flat, cermet precision (finishing)
RCMX Series — Round Turning Heavy (4 SKUs)
The RCMX is Mitsubishi's heavy-duty round insert with no chip-breaker (full flat top). The "X" indicates the strongest edge for the heaviest roughing applications. The MO suffix is the standard flat-top version.
- RCMX1003MO US735 - 10mm IC, MO flat (no chip-breaker), CVD stainless heavy (workhorse)
- RCMX1204MO US735 - 12mm IC, MO flat, CVD stainless heavy (heaviest)
- RCMX1204MO UE6110 - 12mm IC, MO flat, CVD steel workhorse (heaviest)
- RCMX1204MO NX2525 - 12mm IC, MO flat, cermet mirror finish (heaviest finishing)
RPMT Series — Round Positive Milling (5 SKUs)
The RPMT is Mitsubishi's round positive milling insert for face mills and shoulder mills. The "MOE-JS" chip-breaker has a flat top with edge-prepped corners, ideal for face milling at high feed rates. Four IC sizes (08T2 / 10T3 / 1204 / 1606) cover milling cutter diameters from 32 mm to 80 mm.
- RPMT08T2MOE-JS VP15TF - 8mm IC, MOE-JS chip-breaker, PVD Miracle Coat (face mill small)
- RPMT10T3MOE-JS VP15TF - 10mm IC, MOE-JS, PVD (face mill medium)
- RPMT1204MOE-JS VP15TF - 12mm IC, MOE-JS, PVD Miracle Coat (most popular milling)
- RPMT1204MOE-JS F7030 - 12mm IC, MOE-JS, PVD aluminum-specific (sharp edge)
- RPMT1606MOE-JS VP15TF - 16mm IC, MOE-JS, PVD Miracle Coat (face mill large)
Frequently Asked Questions
What is the difference between RCMT and RCMX Mitsubishi round inserts?
Both are round inserts with "MO" (flat top) suffix. The difference is in the corner preparation: RCMT has a slight edge preparation (T = tolerance class, with chip-breaker land) suitable for medium-roughing on smaller workpieces. RCMX has a stronger edge preparation (X = extra tough) for the heaviest roughing on large workpieces. Both have 8 cutting edges. RCMT covers 6-8mm IC sizes; RCMX covers 10-12mm IC sizes for heavier work. Use RCMT for medium roughing; use RCMX for the heaviest roughing on rigid machines.
What is the difference between RCMT and RPMT round inserts?
Both are round inserts from Mitsubishi, but for different operations. RCMT is for turning (external + face turning on lathes) — has a "T" in the name indicating "Turning" (T = tolerance class, originally lathe turning). RPMT is for milling (face + shoulder milling on machining centers) — has a "P" indicating "Positive" rake for milling cutters. The chip-breaker is also different: RCMT uses MO (flat top for turning), RPMT uses MOE-JS (milling chip-breaker with edge prep). Choose RCMT for lathe work; choose RPMT for face mill / shoulder mill work.
What is the equivalent of Mitsubishi RCMT 1204MO US735 in other brands?
Mitsubishi RCMT 1204MO US735 is the industry-standard round turning insert (12mm IC, MO flat top, US735 CVD stainless heavy grade). Direct equivalents: Sandvik RCMT 1204M0 GC4325, Kennametal KR1204M KC7315, Iscar RCMT 1204M0 IC8150, Walter RPMT 1204MO WPP10. All are dimensionally interchangeable on the same round-insert tool holder. For grade cross-reference, see our Insert Grade Cross-Reference Tool.
What is the F7030 grade and when should I use it?
F7030 is Mitsubishi's PVD grade specifically formulated for aluminum and non-ferrous metal milling. The "F" prefix indicates "Free-cutting" (non-ferrous) and the PVD coating is thinner than VP15TF to keep the cutting edge sharp. F7030 has a sharp honed edge that prevents built-up edge when cutting aluminum — critical for high-speed face milling of aluminum where built-up edge causes surface finish problems. Use F7030 for face milling of aluminum, brass, copper, and other non-ferrous metals. For steel/stainless milling, use VP15TF (universal PVD) or US735 (CVD).
What is the "MO" and "MOE-JS" chip-breaker designation?
MO = Mitsubishi's "flat top" designation for round inserts with no chip-breaker groove. The insert has a full flat top on both faces, and cutting edges are formed around the full circumference. Used for heavy roughing and profiling convex surfaces. MOE-JS = "MO with edge-prep + JS profile" — has a slight edge preparation (honed) plus the "JS" chip-breaker profile for face milling. The JS profile is a flat top with subtle serrations for chip control at high feed rates. Use MO for turning; use MOE-JS for face milling.
What is the minimum order quantity for Mitsubishi round inserts?
Sample orders start at 1 piece for grade validation. Standard production orders are 10-50 pieces per item. Bulk pricing tiers: 2-9 pieces 6% off, 10+ pieces 12% off (auto-applied at checkout). For custom IC sizes, grades, or chip-breakers not in our standard catalog, MOQ is 200 pieces with 6-8 week lead time from Mitsubishi Japan. See our warranty and return policy for details on grade validation samples.
Related Mitsubishi Collections
Order Mitsubishi Round Inserts or Request a Quote
Need an IC size, grade, or chip-breaker not in our standard catalog? Send us a part number, grade spec, and quantity — we will return a formal quote within 24 hours. Custom Mitsubishi round geometries available on 6-8 week lead time from Japan.
CNCHome-Beyond — Authorized Mitsubishi Distributor. Genuine OEM product from Mitsubishi Materials Corporation, full lot traceability, same-day dispatch from Hangzhou for orders placed before 3 PM China time.
Want to know more about Mitsubishi round vs square inserts, RCMT vs RCMX, or F7030 aluminum grade? Read our CNC tooling knowledge base or check the complete cross-reference tool for grade-to-grade equivalents.