BEYOND EMR-5R25-250-C24-2T Indexable Milling Cutter Shank (25mm / 0.94" Shank)
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BEYOND EMR-5R25-250-C24-2T Indexable Milling Cutter Shank
ISO/ANSI Standard 25mm Face Milling Tool Holder | Extra Deep-Reach C24 Straight Shank (250mm OAL) for RPMT1003 Inserts
1. Product Overview
"Which 25mm indexable milling cutter shank featuring an extra-long 250mm overall length and a C24 straight shank provides maximum clearance for deep mold cavities?"
The BEYOND EMR-5R25-250-C24-2T is an industrial-grade, extra-deep-reach indexable face milling cutter shank engineered in strict compliance with international ISO/ANSI machine tooling standards. Featuring a 25mm cutting diameter (Dc), a 24mm straight shank (C24), an extended 250mm overall length (OAL), and 2 flutes (Z=2), this specialized 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 design with optimized chip pocket geometry facilitates clean chip evacuation under extreme overhangs. The circular insert pocket layout distributes cutting forces evenly, minimizing harmonic vibration and chatter during deep cavity roughing and profiling across carbon steel, alloy steel, and stainless steel.
2. Key Features & Industrial Advantages
- Extra-Long 250mm Reach: Purpose-built for extreme depth mold cavities, deep slotting, and complex 3D contouring where standard holders fail to reach.
- Optimized 2-Flute Architecture: Streamlined chip channels prevent chip clogging and reduce thermal accumulation under deep overhang conditions.
- 42CrMo Alloy Structural Steel Body: Vacuum heat-treated to HRC 45–48 to absorb high torsional stress and resist bending fatigue.
- Electro-Nickel Anti-Wear Plating: Corrosion-resistant coating reduces friction coefficient and prevents chip welding during high-speed cuts.
- Secure Torx Screw Clamping: M3.5 Torx hardware guarantees tight insert retention and stable radial runout within ±0.01mm.
3. Technical Specifications & ISO Code Breakdown
ISO Model Designation Breakdown: EMR-5R25-250-C24-2T
Pair this C24 extra-deep-reach cutter body with our matching C24 power collet chucks.
Explore C24 Tool Holders & Chucks →
Metric vs. Imperial Technical Comparison
| Specification | Metric Model (EMR-5R25-250-C24-2T) | Imperial Equivalent |
|---|---|---|
| Cutting Head Diameter (Dc) | 25 mm | 0.984 in |
| Shank Diameter (d) | 24 mm Straight Shank | 0.945 in Straight Shank |
| Overall Length (L) | 250 mm | 9.843 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 250mm Extra-Deep Overhang)
| ISO Workpiece Material | Cutting Speed (Vc) | Feed per Tooth (fz) | Depth of Cut (ap) | Coolant Mode |
|---|---|---|---|---|
| Carbon Steel (P10–P25) | 120 – 180 m/min | 0.08 – 0.18 mm/z | 0.5 – 1.5 mm | Air Blow / Dry |
| Alloy / Mold Steel (P25–P35) | 90 – 140 m/min | 0.06 – 0.15 mm/z | 0.4 – 1.2 mm | Air Blow |
| Stainless Steel (M20–M35) | 65 – 110 m/min | 0.05 – 0.12 mm/z | 0.3 – 1.0 mm | Emulsion / High-Pressure Coolant |
| Cast Iron (K15–K30) | 100 – 150 m/min | 0.08 – 0.18 mm/z | 0.5 – 1.5 mm | Dry Milling |
4. Applications & Equipment Compatibility
Primary Milling Operations: Extra-deep mold cavity roughing, deep slotting, deep-wall profiling, and 3D contouring with severe overhang requirements.
Machine Tool Compatibility: Vertical Machining Centers (VMC), Horizontal Machining Centers (HMC), and CNC Gantry Milling Machines.
Tool Holder Compatibility: C24 Power Collet Chucks, C24 Side Lock Holders, and BT40 / BT50 / CAT40 / HSK63A master adapters via precision reduction sleeves.
6. Workpiece Material Matrix & Grade Selection
Pair your EMR-5R25-250-C24 shank with optimal BEYOND carbide insert grades for superior durability:
| 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 balanced high-speed rotation under 250mm overhang.
- Engineered Extra-Long Rigidity: Specially treated 42CrMo steel matrix absorbs severe deflection forces in deep cavity 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 C24 specialized slim shank design allows proper clearance inside restrictive deep-pocket boring environments while balancing rigidity across the 250mm length.
A: Reduce axial depth of cut (ap) and feed per tooth by 20–30%, utilize climb milling, and ensure maximum insertion depth inside the C24 collet chuck.
A: Yes, round cutting edges provide exceptional multi-directional cutting strength, effectively reducing cutting resistance in deep cavities.
• Direct OEM Equivalents: Mitsubishi EMR5-25-C24-250-2T | Sandvik CoroMill 200 (25mm head / 250mm length) | Iscar DROPMILL 25mm Deep Shank.
• Vibration Control Tip: If harmonic resonance occurs during deep contouring, reduce spindle RPM by 15% or adjust feed rate to break resonant frequencies.
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.