Korloy RPMT1204MO-Q PC5300 12mm Universal Round Milling Insert for Steel & Stainless (10pcs)
30-Day Free Returns
Free Worldwide Shipping
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