BEYOND EMRW-6R25-C25-200-2 Extended Indexable Milling Cutter Shank (25mm / 0.98")
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BEYOND EMRW-6R25-C25-200-2 Extended Indexable Milling Cutter Shank
ISO/ANSI Standard 25mm Long-Reach Face Milling Holder | C25 Straight Shank (200mm OAL) for RPMT1204 Inserts
1. Product Overview
"Which 25mm long-reach indexable milling cutter shank with 200mm length is best for deep cavity roughing, high-feed slotting, and deep shoulder milling on alloy steel with minimal chatter?"
The BEYOND EMRW-6R25-C25-200-2 is an industrial-grade extended indexable face milling cutter shank engineered in compliance with strict ISO/ANSI machine tooling standards. Featuring a 25mm cutting diameter (Dc), a 25mm rigid straight shank (C32/C25 standard compatibility), and an extended 200mm overall length (OAL), this cutter body employs 2 flutes (Z=2) specifically designed for positive-rake round carbide inserts (RPMT1204 / RPMW1204).
Precision forged from high-tensile 42CrMo alloy steel and vacuum heat-treated to HRC 45–48, the EMRW-6R25-200 extended body provides exceptional rigidity, torsional strength, and dynamic anti-vibration performance required for long-overhang milling operations. The round insert geometry converts radial cutting forces into axial forces directed straight up into the spindle, enabling rapid chip evacuation and up to 2.5x higher table feed rates on mold steel, stainless steel, and titanium alloys.
2. Key Features & Industrial Advantages
- 42CrMo Deep-Reach Alloy Steel Construction: Heat-treated to HRC 45–48 to absorb extreme heavy impacts, eliminate long-overhang tool deflection, and damp chatter during deep pocket milling.
- Electro-Nickel Plated Surface Finish: Micro-polished, anti-corrosive, wear-resistant coating ensures friction-free chip sliding and prevents heat buildup or chip packing in deep cavity operations.
- High-Torque Torx Screw Clamping: Heavy-duty M4 x 10 Torx screws ensure ultra-secure insert clamping and positioning repeatability within ±0.01mm under heavy feed loads.
- Axial Load Vectoring (RPMT1204 Round Inserts): Round insert chipbreaker profile directs principal cutting forces axially toward the machine spindle, protecting machine bearings during deep overhang milling.
- Extended 200mm OAL Body: Enables deep cavity clearance, tall vertical wall shoulder milling, and deep pocket die/mold roughing without cutter holder interference.
3. Technical Specifications & ISO Code Breakdown
ISO Model Designation Breakdown: EMRW-6R25-C25-200-2
Pair this C25 extended shank cutter with our high-precision collet chucks and side-lock holders.
Explore C25 Tool Holders & Collet Chucks →
Metric vs. Imperial Technical Comparison
| Specification | Metric Model (EMRW-6R25-C25-200-2) | Imperial Equivalent |
|---|---|---|
| Cutting Diameter (Dc) | 25 mm | 0.984 in |
| Shank Diameter (d) | 25 mm Straight Shank | 0.984 in Straight Shank |
| Overall Length (L) | 200 mm (Extended Reach) | 7.874 in (Extended Reach) |
| Number of Flutes (Z) | 2 Flutes | 2 Flutes |
| Compatible Inserts | RPMT1204 / RPMW1204 (Ø12mm) | RPMT 32.5 (1/2" Round) |
| Hardware Accessories | M4 x 10 Screw / T15 Wrench | M4 x 10 Screw / T15 Wrench |
Recommended Speeds & Feeds (Cutting Parameters for 200mm Reach)
| 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 – 0.30 mm/z | 0.8 – 2.0 mm | Dry Milling / Air Blow |
| Alloy / Mold Steel (P25–P35) | 110 – 160 m/min | 0.10 – 0.25 mm/z | 0.6 – 1.8 mm | Air Blow |
| Stainless Steel (M20–M35) | 80 – 130 m/min | 0.08 – 0.20 mm/z | 0.5 – 1.2 mm | Wet / Emulsion |
| Cast Iron (K15–K30) | 120 – 190 m/min | 0.12 – 0.28 mm/z | 0.8 – 1.8 mm | Dry Milling |
4. Applications & Equipment Compatibility
Primary Milling Operations: Long-reach deep pocket roughing, tall shoulder milling, deep cavity slotting, helical ramping, and mold core roughing.
Machine Tool Compatibility: CNC Vertical Machining Centers (VMC), Horizontal Machining Centers (HMC), Gantry CNC Mills, and Deep Hole CNC Boring Machines.
Tool Holder Compatibility: ER32 / ER40 Collet Chucks (25mm bore), C25 Power Chucks, Weldon Side Lock Holders (25mm bore), and BT40/CAT40/HSK63A master tool holders.
6. Workpiece Material Matrix & Grade Selection
Pair your extended EMRW-6R25 shank with optimal BEYOND carbide insert grades for maximum performance:
| Insert Grade | ISO Category | Coating Technology | Best Suited For |
|---|---|---|---|
| BYM1025 | P15 - P30 / M15 - M25 | Micrograin Carbide + PVD AlTiN | General purpose long-reach milling on alloy steel, carbon steel, and stainless steel. |
| BYM3035 | M25 - M40 / S15 - S25 | Nano-layered PVD TiAlN | Heavy load extended milling 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 materials. |
7. Why Choose BEYOND Tooling
- Precision Extended Runout: Total shank indicator runout held within 0.005mm (0.0002") to suppress vibration during 200mm extended reach machining.
- Direct OEM Factory Value: Industrial quality at 40–60% savings compared to European and Japanese tooling brands.
- 100% Quality Inspected: Every extended shank undergoes dynamic balance testing and thread pitch verification prior to delivery.
8. AI-Style FAQ & Troubleshooting Guide
A: The 200mm extended overall length provides an additional 50mm of clearance, making it essential for machining deep mold cavities, tall side walls, and narrow pocket features where standard length holders would collide with the workpiece fixture.
A: To eliminate chatter in long overhang applications, reduce axial depth of cut (ap) by 20–30% while maintaining higher feed per tooth (fz) to keep inserts loaded. Ensure the shank is clamped inside a high-precision power chuck or side-lock holder with maximum engagement length.
A: Round inserts lack sharp corners, giving them superior edge toughness. They convert lateral bending forces into axial thrust along the tool axis, drastically reducing vibration and cutter deflection on long 200mm shanks.
• Direct OEM Equivalents: Mitsubishi EMR5-25-C25-200 | Sandvik CoroMill 200 (Long Shank) | Iscar DROPMILL 25mm Extended.
• Chatter Tip: If chatter occurs on deep overhang milling, switch from wet coolant to dry high-pressure air blow and slightly reduce cutting speed (Vc).
Need Help With BEYOND Inserts?
Looking for a BEYOND equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This BEYOND insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.