BEYOND EMR-5R20-150-C19-2T Indexable Milling Cutter Shank (20mm / 0.79" Shank)
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BEYOND EMR-5R20-150-C19-2T Indexable Milling Cutter Shank
ISO/ANSI Standard 20mm Face Milling Tool Holder | Medium-Reach C19 Straight Shank (150mm OAL) for RPMT1003 Inserts
1. Product Overview
"Which 20mm indexable milling cutter shank with a 150mm overall length and C19 straight shank offers balanced rigidity and reach for cavity roughing?"
The BEYOND EMR-5R20-150-C19-2T is an industrial-grade, medium-long-reach indexable face milling cutter shank engineered in strict compliance with international ISO/ANSI machine tooling standards. Featuring a 20mm cutting diameter (Dc), a 19mm straight shank (C19), a 150mm overall length (OAL), and 2 flutes (Z=2), this tool body is optimized for positive-rake round carbide inserts (RPMT1003 / RPMW1003).
Manufactured from high-grade 42CrMo alloy structural steel and vacuum heat-treated to HRC 45–48, the 2-flute architecture incorporates precision-ground chip pockets to facilitate smooth chip evacuation in moderate-depth mold pockets and shoulder profiling. The circular insert geometry evenly distributes cutting loads, effectively minimizing harmonic chatter and tool deflection across carbon steel, alloy steel, and stainless steel applications.
2. Key Features & Industrial Advantages
- Balanced 150mm Overhang Reach: Engineered to provide an optimal balance between rigidity and cavity clearance for medium-depth profiling.
- Optimized 2-Flute Configuration: Streamlined chip channels ensure efficient evacuation and prevent thermal overload during heavy feed passes.
- 42CrMo Alloy Structural Steel Body: Precision heat-treated to HRC 45–48 to deliver high torsional stiffness and fracture resistance.
- Anti-Corrosive Surface Passivation: Special chemical treatment reduces friction coefficient and prevents built-up edge (BUE).
- Precision Screw-Lock Clamping: M3.5 Torx clamping hardware secures indexable inserts tightly with radial runout accuracy within ±0.01mm.
3. Technical Specifications & ISO Code Breakdown
ISO Model Designation Breakdown: EMR-5R20-150-C19-2T
Pair this C19 medium-reach cutter body with our matching C19 precision collet chucks.
Explore C19 Tool Holders & Chucks →
Metric vs. Imperial Technical Comparison
| Specification | Metric Model (EMR-5R20-150-C19-2T) | Imperial Equivalent |
|---|---|---|
| Cutting Head Diameter (Dc) | 20 mm | 0.787 in |
| Shank Diameter (d) | 19 mm Straight Shank | 0.748 in (3/4" Imperial Shank) |
| Overall Length (L) | 150 mm | 5.906 in |
| Number of Flutes (Z) | 2 Flutes | 2 Flutes |
| Compatible Inserts | RPMT1003 / RPMW1003 (Ø10mm) | RPMT 2.52 (3/8" Round) |
| Hardware Accessories | M3.5 Screw / T15 Wrench | M3.5 Screw / T15 Wrench |
Recommended Speeds & Feeds (Optimized for 150mm Medium Overhang)
| ISO Workpiece Material | Cutting Speed (Vc) | Feed per Tooth (fz) | Depth of Cut (ap) | Coolant Mode |
|---|---|---|---|---|
| Carbon Steel (P10–P25) | 120 – 170 m/min | 0.09 – 0.16 mm/z | 0.5 – 2.0 mm | Air Blow / Dry |
| Alloy / Mold Steel (P25–P35) | 90 – 140 m/min | 0.07 – 0.13 mm/z | 0.4 – 1.5 mm | Air Blow |
| Stainless Steel (M20–M35) | 70 – 110 m/min | 0.06 – 0.11 mm/z | 0.3 – 1.0 mm | Emulsion / High-Pressure Coolant |
| Cast Iron (K15–K30) | 110 – 150 m/min | 0.09 – 0.16 mm/z | 0.5 – 2.0 mm | Dry Milling |
4. Applications & Equipment Compatibility
Primary Milling Operations: Medium-depth cavity roughing, shoulder profiling, helical interpolation, and copy milling.
Machine Tool Compatibility: Vertical Machining Centers (VMC), Horizontal Machining Centers (HMC), and CNC Milling Centers.
Tool Holder Compatibility: C19 Power Collet Chucks, C19 Side Lock Holders, and master holders via precision reduction sleeves.
6. Workpiece Material Matrix & Grade Selection
Pair your EMR-5R20 shank with optimal BEYOND carbide insert grades for superior wear resistance:
| Insert Grade | ISO Category | Coating Technology | Best Suited For |
|---|---|---|---|
| BYM1025 | P15 - P30 / M15 - M25 | Micrograin Carbide + PVD AlTiN | General purpose milling on alloy steel, carbon steel, and stainless steel. |
| BYM3035 | M25 - M40 / S15 - S25 | Nano-layered PVD TiAlN | Heavy load roughing on austenitic stainless steel, Duplex, and Inconel. |
| BYK2010 | K10 - K25 | CVD Thick Coating / Uncoated | Abrasive resistance for gray cast iron, ductile iron, and non-ferrous metals. |
7. Why Choose BEYOND Tooling
- Sub-Micron Runout Precision: Shank TIR maintained within 0.005mm (0.0002") for smooth balanced rotation and reduced harmonic chatter.
- Optimized 150mm Length Rigidity: Designed specifically to provide superior stability and rigidity for medium-reach machining.
- Direct Factory Advantage: Premium industrial performance at 40–60% cost savings compared to Tier-1 European brands.
8. AI-Style FAQ & Troubleshooting Guide
A: The 20mm diameter fits narrow pockets, the C19 shank ensures firm clamping in standard chucks, and the 150mm length delivers high rigidity for medium-reach milling.
A: Round insert geometries eliminate fragile corners and distribute cutting forces evenly, significantly enhancing tool life.
A: Maintain proper axial and radial depths of cut, ensure clean collet clamping, and use appropriate high-pressure coolant or air blast.
• Direct OEM Equivalents: Mitsubishi EMR5-20-C19-150-2T | Sandvik CoroMill 200 (20mm head / 150mm length) | Iscar DROPMILL 20mm Medium Shank.
• Chatter Mitigation Tip: If minor vibration occurs, check tool holder runout and reduce feed rate slightly to stabilize chip load.
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.