BEYOND EMR-5R32-150-C25-3T Indexable Milling Cutter Shank (32mm / 1.26")
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BEYOND EMR-5R32-150-C25-3T Indexable Milling Cutter Shank
ISO/ANSI Standard 32mm Face Milling Tool Holder | Reduced C25 Straight Shank (150mm OAL) for RPMT1003 Inserts
1. Product Overview
"Which 32mm indexable milling cutter shank with a reduced 25mm shank (C25) and 150mm overall length is best suited for high-feed roughing, face milling, and mold profiling in compact spindle setups?"
The BEYOND EMR-5R32-150-C25-3T is an industrial-grade indexable face milling cutter shank engineered in strict compliance with international ISO/ANSI machine tooling standards. Featuring a 32mm cutting diameter (Dc), a reduced 25mm straight shank (C25), and a 150mm overall length (OAL), this tool body is configured with 3 flutes (Z=3) tailored specifically for positive-rake round carbide inserts (RPMT1003 / RPMW1003).
Forged from high-tensile 42CrMo alloy steel and vacuum heat-treated to HRC 45–48, the stepped body profile enables maximum clearance when milling step shoulders and narrow cavities without interfering with fixture walls. The circular insert pocket layout directs aggressive cutting force vectors axially into the machine spindle column, ensuring maximum dynamic stability, chatter suppression, and enhanced metal removal rates (MRR) across alloy steel, stainless steel, and cast iron.
2. Key Features & Industrial Advantages
- Reduced C25 Shank Compatibility: 25mm straight shank fits standard ER32 chucks, ER40 collets, and Weldon holders while providing 32mm heavy-duty face milling capacity.
- 42CrMo Alloy Steel Construction: Vacuum heat-treated to HRC 45–48 to deliver optimum torsional strength and impact resistance under interrupted cuts.
- Electro-Nickel Anti-Wear Plating: Corrosion-resistant, low-friction surface finish prevents chip adhesion and thermal galling in tough material machining.
- High Precision Torx Clamping: Heavy-duty Torx screw seating guarantees insert positional repeatability within ±0.01mm, eliminating tool runout.
- Axial Vector Force Loading (RPMT1003 Round Inserts): Circular cutting edge directs cutting pressure axially into the machine spindle, protecting spindle bearings from bending stress.
3. Technical Specifications & ISO Code Breakdown
ISO Model Designation Breakdown: EMR-5R32-150-C25-3T
Pair this C25 reduced shank cutter body with our ER32 / ER40 / C25 power chucks and Weldon holders.
Explore C25 Tool Holders & Chucks →
Metric vs. Imperial Technical Comparison
| Specification | Metric Model (EMR-5R32-150-C25-3T) | Imperial Equivalent |
|---|---|---|
| Cutting Head Diameter (Dc) | 32 mm | 1.260 in |
| Shank Diameter (d) | 25 mm Straight Shank (Reduced) | 0.984 in Straight Shank |
| Overall Length (L) | 150 mm | 5.905 in |
| Number of Flutes (Z) | 3 Flutes | 3 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 (Standard Parameters for C25 Shank)
| ISO Workpiece Material | Cutting Speed (Vc) | Feed per Tooth (fz) | Depth of Cut (ap) | Coolant Mode |
|---|---|---|---|---|
| Carbon Steel (P10–P25) | 170 – 240 m/min | 0.12 – 0.30 mm/z | 1.0 – 2.2 mm | Dry Milling / Air Blow |
| Alloy / Mold Steel (P25–P35) | 120 – 180 m/min | 0.10 – 0.25 mm/z | 0.8 – 1.8 mm | Air Blow |
| Stainless Steel (M20–M35) | 85 – 140 m/min | 0.08 – 0.20 mm/z | 0.5 – 1.5 mm | Wet / Emulsion |
| Cast Iron (K15–K30) | 130 – 200 m/min | 0.12 – 0.28 mm/z | 1.0 – 2.0 mm | Dry Milling |
4. Applications & Equipment Compatibility
Primary Milling Operations: Heavy face milling, shallow cavity roughing, step milling, 3D mold contouring, and helical ramping.
Machine Tool Compatibility: Vertical Machining Centers (VMC), Horizontal Machining Centers (HMC), CNC Milling Lathes, and Bed Mills.
Tool Holder Compatibility: ER32 Collet Chucks (25mm collet), ER40 Collet Chucks, C25 Power Chucks, 25mm Weldon Side Lock Holders, and BT40 / BT50 / CAT40 / CAT50 / HSK63A master tool holders.
6. Workpiece Material Matrix & Grade Selection
Pair your EMR-5R shank with optimal BEYOND carbide insert grades for maximum tool life and cut efficiency:
| 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 Accuracy: Shank TIR held within 0.005mm (0.0002") for precise rotation and uniform insert wear.
- Versatile C25 Stepped Design: Bridges the gap between small chuck tooling and large 32mm cutting heads without wall collision.
- Direct OEM Factory Value: Premium industrial quality at 40–60% cost savings compared to European and Japanese brands.
8. AI-Style FAQ & Troubleshooting Guide
A: The 25mm shank allows machine operators with standard ER32 collet systems to run a 32mm face mill without needing to purchase expensive C32 power chucks or larger tool holders.
A: Round inserts have no sharp corners to chip under shock loads. They convert radial force into axial thrust directed up into the spindle, ensuring smooth chatter-free cutting.
A: For stainless steel, choose sharp, polished geometries (e.g., -LH / -MS) to minimize shear heat and prevent edge build-up. For carbon steel, use standard positive chipbreakers (e.g., -PM / -MM) for controlled chip breaking.
• Direct OEM Equivalents: Mitsubishi EMR5-32-C25-150 | Sandvik CoroMill 200 (32mm head / 25mm shank) | Iscar DROPMILL 32mm Reduced Shank Standard.
• Built-Up Edge (BUE) Solution: If metal welding occurs on the insert top face, increase cutting speed (Vc) by 15% and switch to high-pressure coolant/emulsion.
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.