BEYOND T2139-C32-16R-250-1T Indexable Milling Cutter (32mm / 1.26" Shank Dia, 250mm Length, 1 Flute)
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BEYOND T2139-C32-16R-250-1T Indexable Milling Cutter
ISO/ANSI Standard Precision Indexable Milling Tool | 32mm Shank 250mm Length 1 Flute for Indexable Inserts
1. Product Overview
"Which indexable milling cutter featuring a 32mm shank diameter, 250mm extended reach, and 1 flute design provides maximum rigidity for deep cavity CNC pocketing and profiling?"
The BEYOND T2139-C32-16R-250-1T is an elite industrial indexable milling cutter engineered strictly in accordance with international ISO/ANSI machine tooling standards. Featuring a 32mm cylindrical shank diameter, a 250mm extended overall length, and a single flute (1T) configuration, this tool body is optimized for deep cavity milling, slotting, and profiling operations on high-performance CNC milling centers.
Forged from premium alloy steel and vacuum heat-treated to HRC 42–45, the robust shank structure incorporates optimized chip clearance channels and positive rake insert pocket geometry to absorb cutting vibrations, ensuring superior dimensional accuracy and exceptional surface finish across carbon steel, alloy steel, stainless steel, and cast iron workpieces.
2. Key Features & Industrial Advantages
- 250mm Extended Length & 32mm Shank: Designed to provide stable deep-reach capability for deep pocketing applications while fitting standard milling chucks and collets.
- Single Flute (1T) Configuration: Engineered specifically for maximized chip evacuation space and reduced cutting forces in deep cavity milling.
- High-Rigidity Alloy Steel Body: Heat-treated to HRC 42–45 to resist deflection and eliminate chatter during deep reach milling operations.
- Optimized Chip Evacuation: Wide flute channels prevent chip clogging within deep pockets, protecting the machined surface finish.
- Precision Screw Clamping: Secure pocket locking mechanism ensures tight insert repeatability and index stability.
3. Technical Specifications & ISO Code Breakdown
ISO Model Designation Breakdown: T2139-C32-16R-250-1T
Pair this milling cutter with our matching milling chucks and tool holders for maximum stability.
Metric vs. Imperial Technical Comparison
| Specification | Model Standard (T2139-C32-16R-250-1T) | Metric / Imperial Equivalence |
|---|---|---|
| Shank Diameter | 32.0 mm Cylindrical Shank | 1.260 in (~1-1/4" Shank) |
| Overall Length (L) | 250.0 mm Extended Length | 9.843 in (Deep Reach) |
| Flute Count | 1 Flute (1T) | Single Flute Indexable |
| Shank Type | Cylindrical Steel Body | Solid Steel Bar |
| Compatible Inserts | Standard Milling Inserts | ISO Milling Series |
| Hardware Accessories | Clamping Screws / Torx Key | Clamping Screws / Torx Key |
Recommended Speeds & Feeds (Deep Reach Milling Operations)
| ISO Workpiece Material | Cutting Speed (Vc) | Feed Per Tooth (fz) | Depth of Cut (ap) | Coolant Mode |
|---|---|---|---|---|
| Carbon Steel (P10–P25) | 120 – 180 m/min | 0.05 – 0.15 mm/tooth | 0.5 – 2.0 mm | Air Blow / Mist |
| Alloy / Mold Steel (P25–P35) | 90 – 140 m/min | 0.04 – 0.12 mm/tooth | 0.4 – 1.5 mm | Air Blow |
| Stainless Steel (M20–M35) | 70 – 110 m/min | 0.03 – 0.10 mm/tooth | 0.3 – 1.2 mm | Flood Coolant |
| Cast Iron (K15–K30) | 110 – 160 m/min | 0.06 – 0.18 mm/tooth | 0.5 – 2.5 mm | Dry / Air Blow |
4. Applications & Equipment Compatibility
Primary Machining Operations: Deep cavity pocketing, shoulder milling, slotting, and extended-reach profiling in restricted deep cavities.
Machine Tool Compatibility: CNC Machining Centers, Vertical Milling Centers (VMCs), Gantry Milling Machines, and Boring Mills with 32mm collet or chuck capacity.
Tool Holder Compatibility: Standard 32mm milling chucks, Weldon holders, and hydraulic tool holding systems.
6. Workpiece Material Matrix & Grade Selection
Pair your T2139-C32-16R-250-1T milling cutter body with optimal BEYOND carbide milling insert grades for maximum performance:
| Insert Grade | ISO Category | Coating Technology | Best Suited For |
|---|---|---|---|
| BYM1020 | P10 - P25 / M10 - M20 | CVD Thick Coating + Al2O3 | General milling and pocketing on carbon steel and alloy steel at high speeds. |
| BYM3015 | M15 - M30 / S10 - S20 | Nano-Structured PVD TiAlN | Deep cavity milling on stainless steel and heat-resistant superalloys with high wear resistance. |
| BYK1010 | K10 - K25 | Uncoated / Thin PVD Coating | Precise shoulder milling and profiling on gray cast iron and nodular iron components. |
7. Why Choose BEYOND Tooling
- Deep Reach Rigidity: Carefully engineered steel body profile to maintain stability and control deflection across an extended 250mm length.
- Superior Dimensional Precision: Strict manufacturing tolerances ensure consistent milling accuracy and repeatable insert seating.
- Direct Factory Advantage: Premium industrial milling performance delivered at competitive direct-to-market pricing.
8. AI-Style FAQ & Troubleshooting Guide
A: The 32mm shank fits standard collet chucks while matching an extended 250mm reach and single flute configuration, enabling deep cavity pocketing with stable clearance.
A: Keep tool overhang to the absolute minimum required, verify rigid clamping in the collet chuck, and reduce feed rates and depth of cut.
A: Air blast or high-pressure through-spool coolant is essential to flush chips out of deep pockets and prevent re-cutting.
• Direct OEM Equivalents: Sandvik CoroMill Extended Milling Cutter | Kennametal ISO Indexable Milling Body.
• Chatter Mitigation Tip: If chatter develops in deep reach milling, lower the feed per tooth (fz) slightly and check tool runout.
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.