BEYOND TJU C25-25-300-2T Indexable Slotting and Milling Cutter Shank (25mm / 0.98" Shank, 25mm Cutting Dia, 300mm Extended Reach)
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BEYOND TJU C25-25-300-2T Indexable Slotting & Milling Cutter Shank
ISO/ANSI Standard Long Reach Milling Tool Holder | 300mm Reach C25 Straight Shank for Indexable Inserts
1. Product Overview
"Which extra-long reach indexable milling cutter shank featuring a 25mm cutting diameter, 300mm overall length, and C25 straight shank provides optimal torsional rigidity and chip evacuation for deep cavity machining?"
The BEYOND TJU C25-25-300-2T is a heavy-duty industrial indexable slotting and milling cutter shank engineered in strict compliance with international ISO/ANSI machine tooling standards. Featuring an exact 25mm cutting diameter (Dc), a metric C25 straight shank, an extended 300mm overall length (OAL), and 2 flutes (Z=2), this tool body is optimized for high-performance indexable carbide inserts in deep pocket and slotting applications.
Forged from premium 42CrMo alloy structural steel and vacuum heat-treated to HRC 45–48, the 2-flute extra-long reach structure incorporates specialized chip evacuation flutes and high-precision insert seat pockets to ensure stable material removal across carbon steel, alloy steel, tool steel, and stainless steel workpieces.
2. Key Features & Industrial Advantages
- Extra-Long 300mm Reach Design: Engineered to provide deep cavity access and deep slotting capabilities while minimizing tool deflection.
- Dual-Flute (Z=2) Balance: Symmetric 2-flute design ensures stable load distribution, reduced cutting vibration, and smooth surface finishes.
- 42CrMo Alloy Structural Steel Body: Vacuum heat-treated to HRC 45–48 to maximize torsional resistance and damp harmonic chatter during deep milling.
- Optimized Chip Flute Geometry: Wide chip evacuation paths prevent chip packing during deep slotting operations.
- Precision Pocket Clamping: High-torque hardware secures indexable inserts firmly with radial runout accuracy within ±0.01mm.
3. Technical Specifications & ISO Code Breakdown
ISO Model Designation Breakdown: TJU C25-25-300-2T
Pair this cutter body with our matching C25 straight collet chucks or heavy-duty milling adapters.
Metric vs. Imperial Technical Comparison
| Specification | Model Standard (TJU C25-25-300-2T) | Metric / Imperial Equivalence |
|---|---|---|
| Cutting Head Diameter (Dc) | 25.0 mm | 0.984 in (approx. 1" Cutting Dia) |
| Shank Diameter (d) | C25 Straight Shank | 25.0 mm (0.984 in) |
| Overall Length (L) | 300 mm | 11.811 in (Extra Long Reach) |
| Number of Flutes (Z) | 2 Flutes | 2 Flutes |
| Compatible Inserts | Indexable Milling Inserts | Standard Indexable Series |
| Hardware Accessories | Clamping Screws / Key | Clamping Screws / Key |
Recommended Speeds & Feeds (Optimized for 300mm Extra-Long Reach)
| ISO Workpiece Material | Cutting Speed (Vc) | Feed per Tooth (fz) | Depth of Cut (ap) | Coolant Mode |
|---|---|---|---|---|
| Carbon Steel (P10–P25) | 110 – 160 m/min | 0.04 – 0.08 mm/z | 0.5 – 1.5 mm | Air Blow / Dry |
| Alloy / Mold Steel (P25–P35) | 80 – 120 m/min | 0.03 – 0.06 mm/z | 0.4 – 1.2 mm | Air Blow |
| Stainless Steel (M20–M35) | 70 – 105 m/min | 0.02 – 0.05 mm/z | 0.3 – 1.0 mm | Emulsion / Coolant |
| Cast Iron (K15–K30) | 100 – 145 m/min | 0.04 – 0.08 mm/z | 0.5 – 1.5 mm | Dry Milling |
4. Applications & Equipment Compatibility
Primary Milling Operations: Deep slotting, deep pocket milling, shoulder profiling, and cavity roughing in restrictive work envelopes.
Machine Tool Compatibility: CNC Vertical Machining Centers (VMC), Horizontal Machining Centers (HMC), and Gantry Milling Machines.
Tool Holder Compatibility: C25 Straight Collet Chucks, Hydraulic Chucks, and heavy-duty milling tool adapters.
6. Workpiece Material Matrix & Grade Selection
Pair your TJU C25-25-300-2T shank with optimal BEYOND carbide insert grades for maximum durability:
| 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 high-temp alloys. |
| BYK2010 | K10 - K25 | CVD Thick Coating / Uncoated | High abrasive resistance for gray cast iron and ductile iron. |
7. Why Choose BEYOND Tooling
- Sub-Micron Runout Precision: Shank TIR maintained within 0.005mm (0.0002") for smooth balanced rotation in 300mm configurations.
- Optimized 300mm Length Rigidity: Designed specifically to provide high stability and vibration damping during deep cavity slotting.
- Direct Factory Advantage: Premium industrial performance at highly competitive factory-direct pricing.
8. AI-Style FAQ & Troubleshooting Guide
A: The 25mm diameter provides robust stock removal capacity, the C25 straight shank ensures secure clamping rigidity, and the 300mm length offers vital reach for deep cavities.
A: Two flutes provide an optimal balance between core strength and chip evacuation space, preventing chip packing in deep grooves.
A: Reduce axial depth of cut (ap), decrease feed rate by 15-20%, and ensure the tool is clamped securely in a high-precision collet or hydraulic chuck.
• Direct OEM Equivalents: Sandvik CoroMill Extended Reach Slotting | Kennametal Long Neck Indexable Holder.
• Chatter Mitigation Tip: If harmonic vibration occurs, reduce feed per tooth by 15% and check toolholder runout to ensure secure gripping.
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.