Korloy RPMT1204MO-Q PC5300 12mm Universal Round Milling Insert for Steel & Stainless (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy RPMT1204MO-Q PC5300 is a powerhouse 12.0mm Round (RPMT) Milling Insert designed for high-volume material removal across a broad spectrum of materials, including Steel, Stainless Steel, and Cast Iron. Featuring Korloy's flagship PC5300 PVD Coating, this insert combines a high-toughness substrate with a nano-structured TiAlN layer. The -Q (Light Cutting) geometry ensures an ultra-sharp cutting action that minimizes spindle vibration and heat buildup, making it the industry standard for heavy-duty profiling and face milling.
Maximum Versatility & Strength: The RPMT1204 size is engineered for heavy cuts. With the PC5300 universal grade, you can transition from milling carbon steel to tough stainless steel without changing tools, significantly reducing setup times and inventory costs.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | RPMT1204MO-Q |
| Insert Shape | Round (RP) |
| Diameter / Thickness | 12.0 mm / 4.76 mm |
| Grade | PC5300 (Universal PVD for Multi-Material) |
Core Performance Benefits:
- Extreme Durability: The 12mm thick body provides massive structural integrity for heavy-interrupted cuts in large workpieces.
- Advanced PVD Coating: TiAlN layers provide excellent oxidation resistance and high red-hardness, extending tool life in dry and wet cutting.
- Universal Application: Highly effective on Carbon Steel, Alloy Steel, Tool Steel, and 300/400 series Stainless Steels.
- Cost-Effective Indexing: The circular edge allows you to rotate the insert to multiple fresh cutting zones, maximizing your investment.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed per Tooth (fz) |
|---|---|---|
| Steel (P) - Carbon/Alloy | 140 - 240 m/min | 0.15 - 0.40 mm/t |
| Stainless Steel (M) | 90 - 160 m/min | 0.12 - 0.30 mm/t |
| Cast Iron (K) | 110 - 200 m/min | 0.15 - 0.45 mm/t |
Compatible Milling Cutters:
Precision 12.0mm seat for high-stability heavy milling:
- End Mills (Shank Type): SRAPR2020K12/SRAPL2020K12
Machinist Tip: Optimization for 12mm Round Inserts
The RPMT1204 is a beast in the workshop, but synergy is key:
If you are a job shop with diverse projects, PC5300 is your safest bet. It handles high-heat alloy steel and sticky stainless equally well, ensuring your 12mm cutter is always ready.
With the R6 radius of the RPMT1204, try to keep your depth of cut between 1.0mm and 3.5mm for the best balance of tool life and metal removal rate (MRR).
Pro Advice: When profiling large mold cavities with RPMT1204MO-Q PC5300, ensure your machine has the torque to support high feed rates. The round geometry causes chip thinning, allowing you to "push" the feed harder than standard 90-degree cutters.
Packaging: 10 pieces per box.
Korloy RPMT1204MO price, 12mm universal round carbide insert, heavy duty milling insert for stainless steel, PC5300 milling parameters for alloy steel, round insert for mold base machining
Technical FAQ & Buying Guide
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.
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.
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.
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.
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.
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.