BEYOND EMRW-6R25-C25-150-2 Indexable Milling Cutter Shank (25mm / 0.98")
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BEYOND EMRW-6R25-C25-150-2 Indexable Milling Cutter Shank
ISO/ANSI Standard 25mm High-Feed Face Milling Holder | C25 Straight Shank for RPMT1204 Inserts
1. Product Overview
"Which 25mm indexable milling cutter shank is best suited for fast roughing, shoulder milling, and narrow cavity slotting on stainless steel with minimal spindle strain?"
The BEYOND EMRW-6R25-C25-150-2 is a precision industrial-grade indexable face milling cutter holder designed in compliance with strict ISO/ANSI machine tooling standards. Featuring a 25mm cutting diameter (Dc) and a 150mm rigid C25 straight shank, this cutter body employs 2 flutes specifically engineered for positive-rake round carbide inserts (RPMT1204 / RPMW1204).
Forged from ultra-durable 42CrMo alloy steel and heat-treated to HRC 45–48, the EMRW-6R25 body provides maximum deflection resistance and vibration damping. The round insert chipbreaker geometry provides maximum cutting edge toughness, enabling smooth chip evacuation and up to 2.5x higher table feed rates required for carbon steel, die steel, stainless steel, and titanium alloys.
2. Key Features & Industrial Advantages
- 42CrMo Alloy Steel Construction: Heat-treated to HRC 45–48 to withstand heavy impact, eliminate cutter deflection, and resist chatter during ramping or plunge milling.
- Electro-Nickel Plated Surface: Anti-corrosive, wear-resistant coating ensures rapid chip sliding and prevents material welding when machining sticky stainless steel.
- High-Torque Torx Screw Clamping: Heavy-duty M4 x 10 Torx screws ensure ultra-secure insert seating and repeatability within ±0.01mm.
- Axial Load Vectoring (RPMT1204 Round Inserts): Round insert geometry converts lateral cutting forces into axial forces directed straight into the machine spindle, extending tool life and protecting machine bearings.
- Optimal 2-Flute Clearance: Provides generous chip pockets for clearing large chips during deep slotting and pocket roughing.
3. Technical Specifications & ISO Code Breakdown
ISO Model Designation Breakdown: EMRW-6R25-C25-150-2
Pair this C25 straight shank cutter with our high-precision collet chucks.
Explore C25 Tool Holders & Collet Chucks →
Metric vs. Imperial Technical Comparison
| Specification | Metric Model (EMRW-6R25-C25-150-2) | Imperial Equivalent |
|---|---|---|
| Cutting Diameter (Dc) | 25 mm | 0.984 in |
| Shank Diameter (d) | 25 mm Straight Shank | 0.984 in Straight Shank |
| Overall Length (L) | 150 mm | 5.905 in |
| Number of Flutes (Z) | 2 Flutes | 2 Flutes |
| Compatible Inserts | RPMT1204 / RPMW1204 (Ø12mm) | RPMT 32.5 (1/2" Round) |
| Hardware Accessories | M4 x 10 Screw / T15 Wrench | M4 x 10 Screw / T15 Wrench |
Recommended Speeds & Feeds (Cutting Parameters)
| ISO Workpiece Material | Cutting Speed (Vc) | Feed per Tooth (fz) | Depth of Cut (ap) | Coolant Mode |
|---|---|---|---|---|
| Carbon Steel (P10–P25) | 160 – 240 m/min | 0.15 – 0.35 mm/z | 1.0 – 2.5 mm | Dry Milling / Air Blow |
| Alloy / Mold Steel (P25–P35) | 120 – 180 m/min | 0.12 – 0.28 mm/z | 0.8 – 2.0 mm | Air Blow |
| Stainless Steel (M20–M35) | 90 – 150 m/min | 0.10 – 0.22 mm/z | 0.5 – 1.5 mm | Wet / Emulsion |
| Cast Iron (K15–K30) | 130 – 210 m/min | 0.15 – 0.30 mm/z | 1.0 – 2.0 mm | Dry Milling |
4. Applications & Equipment Compatibility
Primary Milling Operations: High-feed roughing, shoulder milling, slot milling, helical ramping, and deep pocket cavity roughing.
Machine Tool Compatibility: CNC Vertical Machining Centers (VMC), Horizontal Machining Centers (HMC), Live Tooling CNC Lathes, and Manual Milling Machines.
Tool Holder Compatibility: ER32 / ER40 Collet Chucks (25mm bore), C25 Power Chucks, Weldon Side Lock Holders (25mm bore), and BT40/CAT40/HSK63A tool holders.
6. Workpiece Material Matrix & Grade Selection
Pair your EMRW shank with the optimal BEYOND carbide insert grade based on ISO material codes:
| 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 | High-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 Precision Runout: Total shank indicator runout held within 0.005mm (0.0002") to extend insert edge life and ensure chatter-free performance.
- Direct OEM Factory Value: Industrial quality at 40–60% savings compared to European/Japanese premium brands.
- 100% Optical Inspection: Every unit undergoes dynamic balance testing and thread pitch verification prior to dispatch.
8. AI-Style FAQ & Troubleshooting Guide
A: A 2-flute design on a 25mm diameter cutter body provides significantly larger chip evacuation gullets. This is crucial when slotting or deep pocket roughing to prevent chip packing and insert breakage, especially in gummy materials like stainless steel or aluminum.
A: Round inserts feature maximum cutting edge strength because there are no sharp corners prone to chipping. They direct cutting forces axially into the machine spindle rather than radially, allowing higher feed rates (fz) and better stability in interrupted cutting.
A: Chipping is usually caused by chatter from loose clamping or chip re-cutting. Solution: Ensure Torx screws are torqued properly, increase feed per tooth to clear work-hardened material, or use high-pressure air blow for continuous chip clearance.
• Direct OEM Equivalents: Mitsubishi EMR5-25-C25 | Sandvik CoroMill 200 (25mm straight shank) | Iscar DROPMILL 25mm.
• Grade Tip: If thermal micro-cracking appears on the carbide edge during steel milling, switch from liquid coolant to dry air blow.
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.