BEYOND EMR-5R32-200-C25-3T Indexable Milling Cutter Shank (32mm / 1.26")
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BEYOND EMR-5R32-200-C25-3T Indexable Milling Cutter Shank
ISO/ANSI Standard 32mm Extended Face Milling Holder | Reduced C25 Straight Shank (200mm OAL) for RPMT1003 Inserts
1. Product Overview
"Which 32mm extended indexable milling cutter shank with a reduced 25mm shank (C25) and 200mm total length is best for deep cavity clearance, mold profiling, and high-feed roughing in tight access areas?"
The BEYOND EMR-5R32-200-C25-3T is an industrial-grade indexable face milling cutter shank engineered in strict accordance with ISO/ANSI machine tool standards. Featuring a 32mm cutting head diameter (Dc), a reduced 25mm straight shank (C25) for enhanced clearance, and an extended overall length of 200mm (OAL), this cutter body is designed with 3 flutes (Z=3) tailored specifically for positive-rake round carbide inserts (RPMT1003 / RPMW1003).
Constructed from vacuum heat-treated 42CrMo alloy structural steel (HRC 45–48), the stepped-body architecture allows the tool to reach deep mold cavities and steep vertical walls without machine holder interference. The round insert pocket geometry converts heavy cutting forces into axial vector loads, directing stability straight through the machine spindle column to eliminate dynamic deflection, control chatter, and maximize metal removal rates (MRR).
2. Key Features & Industrial Advantages
- Reduced C25 Shank Profile: 25mm shank diameter provides extra radial clearance for deep pockets and steep wall clearances where a standard C32 shank cannot enter.
- 42CrMo Alloy Steel Substrate: Quenched and tempered to HRC 45–48 for superior core toughness and high torsional rigidity across a 200mm overhang.
- Electro-Nickel Anti-Wear Plating: Wear-resistant, anti-corrosive surface coating prevents chip welding and reduces friction in high-temperature steel cuts.
- Torx Fastening Stability: Heavy-duty Torx screws lock inserts rigidly in precision-ground pockets, ensuring position repeatability within ±0.01mm under interrupted cuts.
- Axial Force Vector Loading (RPMT1003 Round Inserts): Circular insert profiles direct cutting resistance axially into the machine spindle column, shielding tool holder joints from bending stress.
3. Technical Specifications & ISO Code Breakdown
ISO Model Designation Breakdown: EMR-5R32-200-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-5R32-200-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) | 200 mm | 7.874 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 (Parameters Adjusted for C25/200mm Extended Reach)
| ISO Workpiece Material | Cutting Speed (Vc) | Feed per Tooth (fz) | Depth of Cut (ap) | Coolant Mode |
|---|---|---|---|---|
| Carbon Steel (P10–P25) | 150 – 210 m/min | 0.10 – 0.25 mm/z | 0.8 – 1.8 mm | Dry Milling / Air Blow |
| Alloy / Mold Steel (P25–P35) | 110 – 160 m/min | 0.08 – 0.20 mm/z | 0.6 – 1.5 mm | Air Blow |
| Stainless Steel (M20–M35) | 80 – 130 m/min | 0.08 – 0.18 mm/z | 0.5 – 1.2 mm | Wet / Emulsion |
| Cast Iron (K15–K30) | 120 – 180 m/min | 0.10 – 0.22 mm/z | 0.8 – 1.8 mm | Dry Milling |
4. Applications & Equipment Compatibility
Primary Milling Operations: Deep cavity roughing, steep vertical wall clearing, mold & die 3D profiling, pocket slotting, and helical ramping.
Machine Tool Compatibility: CNC Vertical Machining Centers (VMC), Horizontal Machining Centers (HMC), Gantry CNC Mills, and Boring Machines.
Tool Holder Compatibility: ER32 / ER40 Collet Chucks (with 25mm collet), C25 Power Chucks, 25mm Weldon Side Lock Holders, and BT40 / BT50 / CAT40 / CAT50 master tool holders.
6. Workpiece Material Matrix & Grade Selection
Pair your EMR-5R shank with optimal BEYOND carbide insert grades for maximum wear resistance and edge stability:
| 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") to maintain balanced rotation across the 200mm length.
- Clearance Design Advantage: The 25mm shank stepping allows deep pocket milling where conventional 32mm straight shanks collide with sidewalls.
- Direct OEM Factory Value: Premium industrial durability at 40–60% cost savings compared to European and Japanese brand equivalents.
8. AI-Style FAQ & Troubleshooting Guide
A: The reduced 25mm shank allows the cutter body to fit into standard ER32 collet chucks and smaller tool holder setups, while providing essential side clearance when reaching down into narrow mold cavities.
A: Maximize clamping depth in a high-precision C25 power chuck or ER32 collet, slightly decrease the depth of cut (ap), and maintain a steady feed rate per tooth (fz) to keep continuous load on the RPMT1003 round insert.
A: Use medium-duty chipbreakers (e.g., -PM / -MM) with positive rakes for alloy steels. For sticky stainless steel, choose sharp, polished geometries (e.g., -LH / -MS) to lower cutting resistance and avoid built-up edge (BUE).
• Direct OEM Equivalents: Mitsubishi EMR5-32-C25-200 | Sandvik CoroMill 200 (32mm head / 25mm shank) | Iscar DROPMILL 32mm Reduced Shank.
• Deflection Tip: If cutter deflection occurs during deep wall milling, reduce depth of cut (ap) by 20% and utilize air blow to clear chips out of the cavity.
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.