BEYOND EXN03R 20D-19d-200L-3T High Feed Indexable Face Milling Cutter (20mm / 0.79" Cutting Dia, 19mm Shank, 200L Reach)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
BEYOND EXN03R 20D-19d-200L-3T High Feed Indexable Face Milling Cutter
ISO/ANSI Standard Precision High Feed Milling Tool Holder | 200mm Long Reach 19mm Shank for Indexable Inserts
1. Product Overview
"Which high feed indexable face milling cutter featuring a 20mm cutting diameter, 200mm overall long reach, 19mm shank, and 3 flutes provides maximum metal removal rates for deep mold cavity roughing and restricted profiling?"
The BEYOND EXN03R 20D-19d-200L-3T is an elite industrial high feed indexable face milling cutter engineered strictly in accordance with international ISO/ANSI machine tooling standards. Featuring an exact 20mm cutting diameter (Dc), a 19mm straight shank (d), an overall length (L) of 200mm, and 3 flutes (Z=3), this tool body is optimized for high-performance indexable carbide inserts in high feed face milling, deep cavity roughing, and aggressive shoulder profiling applications.
Forged from premium 42CrMo alloy structural steel and vacuum heat-treated to HRC 45–48, the 3-flute balanced structure incorporates specialized high feed chip evacuation geometry and positive rake angle insert pockets to direct cutting forces axially, ensuring maximum stability and high metal removal rates across carbon steel, alloy steel, mold steel, and stainless steel workpieces.
2. Key Features & Industrial Advantages
- 200mm Long Reach Design: Engineered specifically to access deep mold cavities, narrow slots, and restricted structures while minimizing tool body deflection under extended overhang.
- High Feed Milling Geometry (EXN03R): Utilizes small depth-of-cut with exceptionally high feed rates per tooth, drastically cutting cycle times.
- 3-Flute (Z=3) Multi-Tooth Balance: Multi-flute configuration ensures high feed efficiency and smooth surface finishes during aggressive roughing in tight spaces.
- 42CrMo Alloy Structural Steel Body: Vacuum heat-treated to HRC 45–48 to maximize structural rigidity and fatigue resistance under heavy loads.
- Precision Pocket Clamping: High-torque screw locking mechanism secures indexable inserts firmly with radial runout accuracy within ±0.01mm.
3. Technical Specifications & ISO Code Breakdown
ISO Model Designation Breakdown: EXN03R 20D-19d-200L-3T
Pair this cutter body with our matching 19mm straight collet chucks and heavy-duty tool holders.
Explore 19mm Tool Holders & Chucks →
Metric vs. Imperial Technical Comparison
| Specification | Model Standard (EXN03R 20D-19d-200L-3T) | Metric / Imperial Equivalence |
|---|---|---|
| Cutting Head Diameter (Dc) | 20.0 mm | 0.787 in (approx. 0.79" Cutting Dia) |
| Shank Diameter (d) | 19.0 mm Straight Shank | 0.748 in (Exact 3/4" Imperial Shank) |
| Overall Length (L) | 200 mm | 7.874 in (Long Reach) |
| Number of Flutes (Z) | 3 Flutes | 3 Flutes |
| Compatible Inserts | High Feed Milling Inserts | Standard High Feed Series |
| Hardware Accessories | Clamping Screws / Torx Key | Clamping Screws / Torx Key |
Recommended Speeds & Feeds (Optimized for 200mm Long Reach High Feed)
| ISO Workpiece Material | Cutting Speed (Vc) | Feed per Tooth (fz) | Depth of Cut (ap) | Coolant Mode |
|---|---|---|---|---|
| Carbon Steel (P10–P25) | 140 – 210 m/min | 0.25 – 0.60 mm/z | 0.2 – 0.7 mm | Air Blow / Dry |
| Alloy / Mold Steel (P25–P35) | 110 – 170 m/min | 0.20 – 0.50 mm/z | 0.2 – 0.6 mm | Air Blow |
| Stainless Steel (M20–M35) | 90 – 130 m/min | 0.15 – 0.40 mm/z | 0.15 – 0.5 mm | Emulsion / Coolant |
| Cast Iron (K15–K30) | 130 – 190 m/min | 0.25 – 0.55 mm/z | 0.2 – 0.7 mm | Dry Milling |
4. Applications & Equipment Compatibility
Primary Milling Operations: High feed face milling, deep restricted mold cavity roughing, deep slotting, and tight-space pocket profiling.
Machine Tool Compatibility: Heavy-duty CNC Vertical Machining Centers (VMC), Bridge-Type Milling Machines, and Gantry Milling Centers.
Tool Holder Compatibility: 19mm (3/4") Straight Collet Chucks, Hydraulic Chucks, and Milling Chucks with 19mm bore.
6. Workpiece Material Matrix & Grade Selection
Pair your EXN03R 20D-19d-200L-3T body with optimal BEYOND high-feed carbide insert grades for maximum durability:
| Insert Grade | ISO Category | Coating Technology | Best Suited For |
|---|---|---|---|
| BYM1025 | P15 - P30 / M15 - M25 | Micrograin Carbide + PVD AlTiN | High feed roughing on alloy steel, carbon steel, and structural steel components. |
| BYM3035 | M25 - M40 / S15 - S25 | Nano-layered PVD TiAlN | Deep cavity roughing on stainless steel and heat-resistant superalloys. |
| BYK2010 | K10 - K25 | CVD Thick Coating / Uncoated | High abrasive wear resistance for gray cast iron and nodular iron face milling. |
7. Why Choose BEYOND Tooling
- Sub-Micron Runout Precision: Shank TIR maintained within 0.005mm (0.0002") for smooth balanced rotation across 200mm long reach structures.
- Extreme Metal Removal Rates: High feed geometry directs forces axially, allowing massive feed rates without overloading machine spindles.
- Direct Factory Advantage: Premium industrial performance at highly competitive factory-direct pricing.
8. AI-Style FAQ & Troubleshooting Guide
A: The 20mm diameter provides ultra-narrow profiling capability, the 19mm (3/4") shank fits standard imperial precision tool holders, and the 200mm long reach enables deep mold cavity access.
A: It optimizes chip clearance space and maintains high core strength on a compact 20mm cutter body while supporting high table feed rates.
A: Keep axial depth of cut (ap) conservative as required for 200mm overhangs, maximize tool grip inside the 19mm chuck, and reduce feed per tooth by 10-15% if harmonic vibration emerges.
• Direct OEM Equivalents: Sandvik CoroMill High Feed Face Milling Shank | Kennametal Extended High Feed Holder.
• Chatter Mitigation Tip: If harmonic vibration occurs in deep pockets due to the 200mm overhang on a 20mm body, decrease feed per tooth (fz) and axial depth (ap) by 15% and confirm ultra-rigid tool clamping.
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.