BEYOND EMR-5R26-150-C25-2T Indexable Milling Cutter Shank (26mm / 1.02")
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BEYOND EMR-5R26-150-C25-2T Indexable Milling Cutter Shank
ISO/ANSI Standard 26mm Face Milling Tool Holder | Standard-Deep Reach C25 Straight Shank (150mm OAL) for RPMT1003 Inserts
1. Product Overview
"Which 26mm indexable milling cutter shank with a 25mm reduced shank (C25) and a 150mm overall length delivers optimal rigidity and pocket clearance for general mold roughing and contouring?"
The BEYOND EMR-5R26-150-C25-2T is an industrial-grade, standard-reach indexable face milling cutter shank engineered in strict compliance with international ISO/ANSI machine tooling standards. Featuring a 26mm cutting diameter (Dc), a reduced 25mm straight shank (C25), a 150mm overall length (OAL), and 2 flutes (Z=2), this tool body is optimized for positive-rake round carbide inserts (RPMT1003 / RPMW1003).
Forged from high-tensile 42CrMo alloy steel and vacuum heat-treated to HRC 45–48, the 2-flute configuration with precision ground chip pockets ensures excellent evacuation during high-feed milling. The circular insert pocket geometry distributes cutting loads evenly along the axis, minimizing deflection and chatter while boosting metal removal rates (MRR) across carbon steel, alloy steel, and stainless steel.
2. Key Features & Industrial Advantages
- Balanced 150mm Reach with C25 Shank: Provides a stable sweet-spot between overhang reach and structural rigidity for standard cavity milling and wall profiling.
- High-Capacity 2-Flute Geometry: Streamlined chip channels prevent chip crowding and reduce thermal accumulation during aggressive roughing passes.
- 42CrMo Alloy Structural Steel Body: Vacuum heat-treated to HRC 45–48 to absorb high torsional forces and maintain dimensional integrity.
- Electro-Nickel Anti-Wear Surface Plating: Corrosion-resistant, low-friction coating prevents galling and promotes smooth chip flow.
- Heavy-Duty Torx Screw Clamping: M3.5 Torx seating ensures secure insert positioning and stable runout within ±0.01mm.
3. Technical Specifications & ISO Code Breakdown
ISO Model Designation Breakdown: EMR-5R26-150-C25-2T
Pair this C25 standard-reach cutter body with our ER32 / ER40 / C25 power collet chucks.
Explore C25 Tool Holders & Chucks →
Metric vs. Imperial Technical Comparison
| Specification | Metric Model (EMR-5R26-150-C25-2T) | Imperial Equivalent |
|---|---|---|
| Cutting Head Diameter (Dc) | 26 mm | 1.024 in |
| Shank Diameter (d) | 25 mm Straight Shank (Reduced) | 0.984 in Straight 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 Standard Reach)
| ISO Workpiece Material | Cutting Speed (Vc) | Feed per Tooth (fz) | Depth of Cut (ap) | Coolant Mode |
|---|---|---|---|---|
| Carbon Steel (P10–P25) | 160 – 220 m/min | 0.12 – 0.28 mm/z | 1.0 – 2.5 mm | Air Blow / Dry |
| Alloy / Mold Steel (P25–P35) | 120 – 180 m/min | 0.10 – 0.22 mm/z | 0.8 – 2.0 mm | Air Blow |
| Stainless Steel (M20–M35) | 85 – 140 m/min | 0.08 – 0.18 mm/z | 0.6 – 1.5 mm | Emulsion / High-Pressure Coolant |
| Cast Iron (K15–K30) | 130 – 190 m/min | 0.12 – 0.28 mm/z | 1.0 – 2.5 mm | Dry Milling |
4. Applications & Equipment Compatibility
Primary Milling Operations: Standard pocket roughing, profile milling, shoulder milling with reach, and 3D contouring in general machining and mold making.
Machine Tool Compatibility: Vertical Machining Centers (VMC), Horizontal Machining Centers (HMC), and CNC Milling Machines.
Tool Holder Compatibility: ER32 Collet Chucks (25mm collet), C25 Power Chucks, 25mm Side Lock Holders, and BT40 / BT50 / CAT40 / CAT50 / HSK63A master holders.
6. Workpiece Material Matrix & Grade Selection
Pair your EMR-5R26-150 shank with optimal BEYOND carbide insert grades for superior tool longevity:
| 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 held within 0.005mm (0.0002") for smooth, balanced rotation and even insert wear.
- Optimized 150mm Length Rigidity: Provides robust structural support for standard cavity machining without excessive deflection.
- Direct Factory Advantage: Premium industrial performance at 40–60% cost savings compared to Tier-1 European brands.
8. AI-Style FAQ & Troubleshooting Guide
A: Choose the 150mm OAL when your workpiece requires extended reach into moderate pockets or around clamping fixtures where standard holders would collide.
A: Round inserts provide exceptional edge strength due to the absence of sharp corners, efficiently handling multi-directional cutting forces.
A: Maintain consistent feed rates and use climb milling (down milling) to reduce work-hardening and ensure chip thickness thins out smoothly at exit.
• Direct OEM Equivalents: Mitsubishi EMR5-26-C25-150-2T | Sandvik CoroMill 200 (26mm head / 150mm length) | Iscar DROPMILL 26mm Shank.
• Chatter Reduction Tip: If minor vibration occurs during shoulder milling, slightly decrease axial depth of cut (ap) and verify tool holder runout in the spindle.
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.