BEYOND EMR-5R25-200-C20-2T Indexable Milling Cutter Shank (25mm / 0.79" Shank)
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BEYOND EMR-5R25-200-C20-2T Indexable Milling Cutter Shank
ISO/ANSI Standard 25mm Face Milling Tool Holder | Long-Reach C20 Straight Shank (200mm OAL) for RPMT1003 Inserts
1. Product Overview
"Which 25mm indexable milling cutter shank with a 200mm overall length and C20 straight shank provides optimal rigidity and clearance for medium-deep cavity profiling?"
The BEYOND EMR-5R25-200-C20-2T is an industrial-grade, long-reach indexable face milling cutter shank engineered in strict compliance with international ISO/ANSI machine tooling standards. Featuring a 25mm cutting diameter (Dc), a 20mm straight shank (C20), a 200mm overall length (OAL), and 2 flutes (Z=2), this tool body is optimized for positive-rake round carbide inserts (RPMT1003 / RPMW1003).
Forged from premium 42CrMo alloy steel and vacuum heat-treated to HRC 45–48, the 2-flute structure incorporates precision-engineered chip flutes to promote efficient chip evacuation in restricted mold pockets and deep slots. The circular geometry spreads cutting forces uniformly, damping vibration and preventing tool deflection across carbon steel, alloy steel, and stainless steel applications.
2. Key Features & Industrial Advantages
- Long 200mm Overhang Reach: Purpose-built for medium-deep mold cavity roughing, deep slotting, and complex contouring with enhanced rigidity.
- Optimized 2-Flute Chip Flow: Wide chip pockets facilitate smooth evacuation and reduce thermal build-up during extended-reach machining passes.
- 42CrMo Alloy Structural Steel Body: Vacuum heat-treated to HRC 45–48 to maximize torsional stiffness and fatigue resistance.
- Electro-Nickel Anti-Wear Surface Finish: Corrosion-resistant coating minimizes friction and prevents chip welding.
- High-Torque Screw Clamping: M3.5 Torx hardware secures inserts firmly with radial runout accuracy within ±0.01mm.
3. Technical Specifications & ISO Code Breakdown
ISO Model Designation Breakdown: EMR-5R25-200-C20-2T
Pair this C20 long-reach cutter body with our matching C20 power collet chucks.
Explore C20 Tool Holders & Chucks →
Metric vs. Imperial Technical Comparison
| Specification | Metric Model (EMR-5R25-200-C20-2T) | Imperial Equivalent |
|---|---|---|
| Cutting Head Diameter (Dc) | 25 mm | 0.984 in |
| Shank Diameter (d) | 20 mm Straight Shank | 0.787 in Straight Shank |
| Overall Length (L) | 200 mm | 7.874 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 200mm Long 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 – 1.8 mm | Air Blow / Dry |
| Alloy / Mold Steel (P25–P35) | 90 – 140 m/min | 0.07 – 0.13 mm/z | 0.4 – 1.2 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 – 1.8 mm | Dry Milling |
4. Applications & Equipment Compatibility
Primary Milling Operations: Medium-deep cavity roughing, pocket profiling, slotting, and complex contouring with extended reach requirements.
Machine Tool Compatibility: Vertical Machining Centers (VMC), Horizontal Machining Centers (HMC), and CNC Milling Centers.
Tool Holder Compatibility: C20 Power Collet Chucks, C20 Side Lock Holders, and BT30 / BT40 / CAT40 / HSK63A master holders via precision reduction sleeves.
6. Workpiece Material Matrix & Grade Selection
Pair your EMR-5R25-200 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 200mm Length Rigidity: Engineered specifically to balance reach and structural rigidity in medium-deep cavities.
- 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 200mm length offers a balanced solution between extended reach and higher torsional stability compared to longer 250mm variants.
A: Round geometry eliminates fragile corners, distributing cutting forces more evenly to suppress chatter and vibration during extended-reach machining.
A: Optimize axial depth of cut (ap) and feed per tooth (fz), ensure secure insertion into the C20 collet chuck, and utilize climb milling.
• Direct OEM Equivalents: Mitsubishi EMR5-25-C20-200-2T | Sandvik CoroMill 200 (25mm head / 200mm length) | Iscar DROPMILL 25mm Long Shank.
• Chatter Mitigation Tip: If harmonic vibration occurs, reduce spindle speed by 10% and verify collet chuck clamping torque.
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.