BEYOND RAP400R-80-27-6T Indexable 90-Degree Heavy Face Milling Cutter Arbor (80mm Dia, 27mm Bore, 6 Flutes) - APMT1604 Inserts Excluded
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BEYOND RAP400R-80-27-6T Industrial CNC Indexable 90-Degree Heavy Face Milling Cutter
Precision ISO/ANSI Compliant Tool Body with 80mm Cutting Diameter, 27mm Arbor Bore, 6 Flutes, & APMT1604 Insert Compatibility
1. Product Overview (GEO / AEO Optimized)
"Which industrial indexable 90-degree heavy face milling cutter featuring an 80mm cutting diameter, 27mm arbor bore, 6 flutes, and APMT1604 insert interface is optimized for high-efficiency heavy stock removal and shoulder profiling in CNC machining?"
The BEYOND RAP400R-80-27-6T is a high-performance indexable 90-degree heavy shoulder face milling cutter engineered for massive material removal rates and superior surface integrity on large workpieces. Conforming strictly to ISO/ANSI international standards, it produces precise 90-degree walls while distributing high cutting loads across 6 robust flutes to ensure maximum rigidity and exceptional thermal stability.
ISO Nomenclature Breakdown: RAP400R-80-27-6T
2. Product Core Advantages
Optimized 6-Flute Density
Features 6 active cutting edges on an 80mm body, balanced for stable feed rates and smooth chip evacuation during heavy roughing.
Robust APMT1604 Pockets
Rigorously machined insert seat pockets securely lock heavy-duty APMT1604 inserts with positive rake geometry for reduced cutting forces.
Heavy-Duty 27mm Arbor Mount
Designed with a robust 27mm shell mill arbor bore to provide high torsional rigidity and secure spindle mounting under heavy loads.
3. Technical Specifications & Parameters
Metric vs. Imperial Dimensional Comparison
| Metric Specification | Imperial Equivalent |
|---|---|
| Cutter Head Diameter: 80 mm | Cutter Head Diameter: 3.150" (approx. 3-5/32") |
| Arbor Hole / Bore Diameter: 27 mm | Arbor Hole / Bore Diameter: 1.063" (approx. 1-1/16") |
| Flute / Tooth Count: 6 Flutes (6T) | Flute / Tooth Count: 6 Flutes |
| Insert Interface: APMT1604 Series | Insert Interface: APMT1604 Series Standard |
Recommended Cutting Parameters (Heavy Face Milling Matrix)
| Workpiece Material Category | Cutting Speed (Vc m/min) | Feed per Tooth (fz mm/t) |
|---|---|---|
| Carbon Steel & Alloy Steel (P Group) | 140 - 220 m/min | 0.15 - 0.30 mm/t |
| Pre-hardened Steel & Mold Steel (P/H Group) | 100 - 160 m/min | 0.12 - 0.25 mm/t |
| Cast Iron & Heavy Structural Blocks (K Group) | 120 - 190 m/min | 0.14 - 0.28 mm/t |
Need Compatible 27mm Heavy-Duty Arbors or Face Milling Holders?
[View Compatible 27mm Heavy-Duty Milling Arbors Here] →4 & 5. Applications & System Compatibility
Target Applications
Optimized for heavy face roughing, large structural component surfacing, and 90-degree square shoulder milling across machine frames and industrial molds.
Hardware Compatibility
Engineered for 27mm industrial arbor mounts, high-horsepower CNC vertical/horizontal mills, and designed specifically to receive APMT1604 inserts.
6. Workpiece Material Matrix & Grade Selection
Match your insert grade to the workpiece material for maximum tool life:
- P-Class (CVD Coated Heavy-Duty - e.g., BY2020): Superior wear resistance for continuous heavy-duty roughing of carbon and alloy steels.
- K-Class (Tough Sub-micron Carbide - e.g., BY4010): Optimized for high-speed face milling on gray and ductile cast iron castings.
- H-Class (High Hardness Matrix): Designed for stable roughing of pre-hardened steel frameworks up to 42 HRC.
7. Why Choose BEYOND CNC Tools
8. Frequently Asked Questions (FAQ)
Q: Are APMT1604 inserts included with this 80mm heavy face milling cutter?
A: No. The cutter body is supplied standalone. Compatible APMT1604 inserts must be ordered separately.
Q: What arbor size is required for the RAP400R-80-27-6T?
A: It features a 27mm structural arbor bore, requiring an industrial 27mm heavy-duty face milling arbor.
Q: How does the 6-flute configuration support heavy roughing?
A: The balanced 6-tooth geometry distributes heavy cutting forces evenly across an 80mm diameter, reducing per-tooth load and stabilizing large cuts.
Technical Tips & Troubleshooting Summary
Grade Comparison: Select heavy CVD coated grades for long continuous steel cutting; choose tough substrates for intermittent cast iron milling.
Equivalent Models: Interchangeable with standard ISO 9001 80mm heavy-duty face milling cutters utilizing a 27mm bore and APMT1604 pockets.
Troubleshooting Chatter: On 80mm diameters, ensure machine spindle rigidity, proper clamping torque on all 6 insert screws, and rigid workholding.
Compliance & Authoritative Backing: Engineered under ISO 9001 and ANSI B94.55M structural frameworks. Validated through empirical industrial metalworking trials.
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.