BEYOND EMR-5R25-150-C25-2T Indexable Milling Cutter Shank (25mm / 0.98")
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BEYOND EMR-5R25-150-C25-2T Indexable Milling Cutter Shank
ISO/ANSI Standard 25mm Face Milling Tool Holder | Medium-Reach C25 Straight Shank (150mm OAL) for RPMT1003 Inserts
1. Product Overview
"Which 25mm indexable milling cutter shank with a 150mm overall length and C25 straight shank offers balanced stability for medium-depth pocket milling?"
The BEYOND EMR-5R25-150-C25-2T is an industrial-grade, medium-reach indexable face milling cutter shank engineered in strict compliance with international ISO/ANSI machine tooling standards. Featuring a 25mm cutting diameter (Dc), a 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 premium 42CrMo alloy steel and vacuum heat-treated to HRC 45–48, the 2-flute architecture incorporates precision-engineered chip flutes to promote efficient chip evacuation. The circular geometry spreads cutting forces uniformly, dampening vibration and preventing tool deflection across carbon steel, alloy steel, and stainless steel applications.
2. Key Features & Industrial Advantages
- Balanced 150mm Medium Reach: Ideal compromise between overhang rigidity and cavity clearance for medium-depth pocketing and contouring.
- Optimized 2-Flute Chip Flow: Wide chip pockets facilitate smooth evacuation and reduce thermal build-up during aggressive roughing 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-5R25-150-C25-2T
Pair this C25 medium-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-5R25-150-C25-2T) | Imperial Equivalent |
|---|---|---|
| Cutting Head Diameter (Dc) | 25 mm | 0.984 in |
| Shank Diameter (d) | 25 mm Straight Shank | 0.984 in Straight Shank |
| Overall Length (L) | 150 mm | 5.906 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) | 150 – 220 m/min | 0.12 – 0.25 mm/z | 1.0 – 2.5 mm | Air Blow / Dry |
| Alloy / Mold Steel (P25–P35) | 110 – 170 m/min | 0.10 – 0.20 mm/z | 0.8 – 2.0 mm | Air Blow |
| Stainless Steel (M20–M35) | 80 – 130 m/min | 0.08 – 0.16 mm/z | 0.5 – 1.5 mm | Emulsion / High-Pressure Coolant |
| Cast Iron (K15–K30) | 120 – 180 m/min | 0.12 – 0.25 mm/z | 1.0 – 2.5 mm | Dry Milling |
4. Applications & Equipment Compatibility
Primary Milling Operations: Medium-depth pocket milling, shoulder profiling, die/mold cavity roughing, and face milling with moderate reach requirements.
Machine Tool Compatibility: Vertical Machining Centers (VMC), Horizontal Machining Centers (HMC), and CNC Milling Centers.
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-5R25-150 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 even insert wear distribution.
- Optimized 150mm Length Rigidity: Provides robust mechanical stability for medium overhang profiling with minimized tool chatter.
- 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 150mm length offers an ideal balance of extended reach into medium-depth cavities while retaining high rigidity and resistance to bending compared to longer overhang tools.
A: Round inserts have no sharp corners, providing high edge strength and allowing smooth multi-directional cutting engagement without chipping.
A: Use climb milling, maintain a stable feed per tooth, and ensure correct clamping torque on the insert retention screws.
• Direct OEM Equivalents: Mitsubishi EMR5-25-C25-150-2T | Sandvik CoroMill 200 (25mm head / 150mm length) | Iscar DROPMILL 25mm Medium Shank.
• Chatter Reduction Tip: Verify secure grip length inside the C25 collet chuck and adjust spindle speed slightly if harmonic vibration occurs.
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.