BEYOND EMR-5R35-300-C32-3T Extra Long Indexable Milling Cutter Shank (35mm / 1.38")
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BEYOND EMR-5R35-300-C32-3T Extra-Long Indexable Milling Cutter Shank
ISO/ANSI Standard 35mm Deep-Cavity Face Milling Holder | C32 Straight Shank (300mm OAL) for RPMT1003 Inserts
1. Product Overview
"Which 35mm extra-long indexable milling cutter shank with 300mm length and 3 flutes is best for ultra-deep cavity roughing, high-feed slotting, and deep mold profile milling with superior chatter damping?"
The BEYOND EMR-5R35-300-C32-3T is an industrial-grade, extra-long indexable face milling cutter shank engineered in strict compliance with ISO/ANSI machine tooling standards. Featuring a 35mm cutting diameter (Dc), a 32mm heavy-duty straight shank (C32), and an impressive 300mm extra-long overall length (OAL), this tool holder is configured with 3 flutes (Z=3) optimized for positive-rake round carbide inserts (RPMT1003 / RPMW1003).
Precision forged from high-tensile 42CrMo alloy steel and vacuum heat-treated to HRC 45–48, the EMR-5R tool body is specifically engineered to handle extreme overhang conditions while mitigating structural resonance. The round insert geometry converts aggressive radial cutting forces into axial thrust directed upward into the spindle, enabling high metal removal rates (MRR) and reliable chip evacuation during ultra-deep cavity profiling on die/mold steel, stainless steel, and cast iron.
2. Key Features & Industrial Advantages
- 42CrMo High-Rigidity Alloy Steel: Core heat treatment to HRC 45–48 delivers maximal dynamic anti-vibration damping across the 300mm extra-long reach.
- Electro-Nickel Plated Surface Finish: Micro-polished, anti-corrosive coating reduces friction, preventing chip welding and heat buildup in deep cavity pocketing.
- Precision Torx Screw Fastening: Heavy-duty Torx screws ensure rigid insert pocket seating and indexing accuracy repeatability within ±0.01mm under heavy cyclic loads.
- Axial Vector Force Distribution (RPMT1003 Round Inserts): Round insert profile directs principal cutting loads axially into machine spindle bearings, minimizing chatter and tool overhang deflection.
- Balanced 3-Flute Configuration (3T): Combines optimal chip-pocket volume with a higher table feed rate (Vf) compared to 2-flute designs.
3. Technical Specifications & ISO Code Breakdown
ISO Model Designation Breakdown: EMR-5R35-300-C32-3T
Pair this C32 extra-long shank cutter with our high-clamping power chucks and side-lock holders.
Explore C32 Tool Holders & Chucks →
Metric vs. Imperial Technical Comparison
| Specification | Metric Model (EMR-5R35-300-C32-3T) | Imperial Equivalent |
|---|---|---|
| Cutting Diameter (Dc) | 35 mm | 1.378 in |
| Shank Diameter (d) | 32 mm Straight Shank | 1.260 in Straight Shank |
| Overall Length (L) | 300 mm (Extra Long Reach) | 11.811 in (Extra Long Reach) |
| 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 for 300mm Overhang)
| ISO Workpiece Material | Cutting Speed (Vc) | Feed per Tooth (fz) | Depth of Cut (ap) | Coolant Mode |
|---|---|---|---|---|
| Carbon Steel (P10–P25) | 140 – 200 m/min | 0.10 – 0.25 mm/z | 0.5 – 1.8 mm | Dry Milling / Air Blow |
| Alloy / Mold Steel (P25–P35) | 100 – 150 m/min | 0.08 – 0.20 mm/z | 0.5 – 1.5 mm | Air Blow |
| Stainless Steel (M20–M35) | 75 – 120 m/min | 0.06 – 0.16 mm/z | 0.4 – 1.0 mm | High-Pressure Coolant |
| Cast Iron (K15–K30) | 110 – 170 m/min | 0.10 – 0.22 mm/z | 0.5 – 1.5 mm | Dry Milling |
4. Applications & Equipment Compatibility
Primary Milling Operations: Ultra-deep pocket roughing, tall shoulder face milling, deep cavity die clearance, 3D contouring, and helical ramping.
Machine Tool Compatibility: CNC Vertical Machining Centers (VMC), Horizontal Machining Centers (HMC), Gantry CNC Mills, and Heavy Boring Mills.
Tool Holder Compatibility: C32 Power Chucks, Weldon Side Lock Holders (32mm bore), ER50 Collet Chucks (32mm bore), and BT50 / CAT50 / HSK100A master holders.
6. Workpiece Material Matrix & Grade Selection
Match your extra-long EMR-5R shank with optimal BEYOND carbide insert grades for deep reach milling:
| Insert Grade | ISO Category | Coating Technology | Best Suited For |
|---|---|---|---|
| BYM1025 | P15 - P30 / M15 - M25 | Micrograin Carbide + PVD AlTiN | General purpose deep-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 metals. |
7. Why Choose BEYOND Tooling
- Extreme-Reach Precision: Total shank indicator runout held within 0.005mm (0.0002") to suppress vibration across 300mm extended reach.
- Direct OEM Factory Value: Premium industrial performance at 40–60% cost savings compared to European and Japanese brands.
- 100% Quality Inspected: Dynamic balancing and thread inspection executed on every extra-long shank body before shipment.
8. AI-Style FAQ & Troubleshooting Guide
A: The 300mm length provides maximum overhang reach needed to access ultra-deep mold cavities and complex die pockets, eliminating cutter holder interference while maintaining rigidity through a thick 32mm shank.
A: Reduce the axial depth of cut (ap) by 25–35% while maintaining a firm feed per tooth (fz) to keep inserts engaged. Clamp as much shank length as possible in a precision C32 power chuck and apply dry high-pressure air blow.
A: Round inserts feature supreme edge strength with no sharp weak corners. They direct cutting forces axially straight into the spindle column, preventing cutter deflection and harmonic chatter during deep reach milling.
• Direct OEM Equivalents: Mitsubishi EMR5-35-C32-300 | Sandvik CoroMill 200 (Extra Long Shank) | Iscar DROPMILL 35mm Extended.
• Chatter Tip: If harmonic resonance occurs, switch from wet coolant to dry high-pressure air blow and reduce cutting speed (Vc) slightly while holding feed per tooth.
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.