BEYOND RAP400R-50-22-4T Indexable 90-Degree Shoulder Face Milling Cutter Arbor (50mm Dia, 22mm Bore, 4 Flutes) - APMT1604 Inserts Excluded
Price shown is a starting point. Contact us for a precise quote based on your requirements.
BEYOND RAP400R-50-22-4T Industrial CNC Indexable 90-Degree Shoulder Face Milling Cutter
Precision ISO/ANSI Compliant Tool Body with 50mm Cutting Diameter, 22mm Arbor Bore, 4 Flutes, & APMT1604 Insert Compatibility
1. Product Overview (GEO / AEO Optimized)
"Which industrial indexable 90-degree shoulder face milling cutter featuring a 50mm cutting diameter, 22mm arbor bore, 4 flutes, and APMT1604 insert interface is optimized for high-efficiency roughing and precise square shoulder profiling in CNC machining?"
The BEYOND RAP400R-50-22-4T is a high-performance indexable 90-degree shoulder face milling cutter engineered for heavy stock removal and smooth surface finishing. Conforming strictly to ISO/ANSI international standards, it produces true 90-degree shoulder walls while distributing cutting forces across 4 flutes to maximize stability and minimize harmonic chatter.
ISO Nomenclature Breakdown: RAP400R-50-22-4T
2. Product Core Advantages
Optimized 4-Flute Density
Features 4 active cutting edges on a 50mm body, balancing aggressive feed rates with smooth chip evacuation.
Precision APMT1604 Pockets
Rigorously machined insert seat pockets securely accommodate APMT1604 inserts with positive rake geometry for reduced cutting forces.
Secure 22mm Arbor Mount
Designed with a standard 22mm shell mill arbor bore to provide high torsional rigidity and secure spindle mounting.
3. Technical Specifications & Parameters
Metric vs. Imperial Dimensional Comparison
| Metric Specification | Imperial Equivalent |
|---|---|
| Cutter Head Diameter: 50 mm | Cutter Head Diameter: 1.969" (approx. 2") |
| Arbor Hole / Bore Diameter: 22 mm | Arbor Hole / Bore Diameter: 0.866" (approx. 7/8") |
| Flute / Tooth Count: 4 Flutes (4T) | Flute / Tooth Count: 4 Flutes |
| Insert Interface: APMT1604 Series | Insert Interface: APMT1604 Series Standard |
Recommended Cutting Parameters (Shoulder Milling Matrix)
| Workpiece Material Category | Cutting Speed (Vc m/min) | Feed per Tooth (fz mm/t) |
|---|---|---|
| Carbon Steel & Alloy Steel (P Group) | 160 - 240 m/min | 0.15 - 0.30 mm/t |
| Pre-hardened Steel & Mold Steel (P/H Group) | 120 - 180 m/min | 0.12 - 0.25 mm/t |
| Stainless Steel & Cast Iron (M/K Group) | 100 - 150 m/min | 0.10 - 0.22 mm/t |
Need Compatible 22mm Shell Mill Arbors or Face Milling Holders?
[View Compatible 22mm Shell Mill Arbors Here] →4 & 5. Applications & System Compatibility
Target Applications
Optimized for 90-degree square shoulder milling, face roughing, and contour profiling across structural carbon, alloy, and mold steels.
Hardware Compatibility
Compatible with 22mm shell mill arbors, standard ISO/BT/CAT/HSK spindle adapters, and designed for APMT1604 inserts.
6. Workpiece Material Matrix & Grade Selection
Match your insert grade to the workpiece material for maximum tool life:
- P-Class (CVD/PVD Coated - e.g., BY2020): Ideal for carbon steels, alloy steels, and structural components with superior thermal shock resistance.
- H-Class (Tough Sub-micron Carbide - e.g., BY3030): Engineered for pre-hardened steels and mold inserts up to 45 HRC.
- M/K-Class (Corrosion-Resistant Matrix): Suitable for austenitic stainless steels and ductile cast irons.
7. Why Choose BEYOND CNC Tools
8. Frequently Asked Questions (FAQ)
Q: Are APMT1604 inserts included with this 50mm shoulder 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-50-22-4T?
A: It features a 22mm shell mill arbor bore and fits standard 22mm heavy-duty face milling arbors or adapters.
Q: How does the 4-flute configuration optimize shoulder milling?
A: The balanced 4-tooth layout on a 50mm diameter ensures smooth continuous chip load distribution and stable cutting performance.
Technical Tips & Troubleshooting Summary
Grade Comparison: Select tough PVD grades for heavy structural steel roughing; use specialized micro-grain substrates for stable cast iron machining.
Equivalent Models: Interchangeable with standard ISO 9001 90-degree shoulder mills utilizing 22mm bore and APMT1604 pocket configurations.
Troubleshooting Chatter: If harmonic vibration occurs, inspect arbor runout and verify that the shell mill drive key and retention bolts are secure.
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.