BEYOND TJU C20-20-120-2T Indexable Slotting and Milling Cutter Shank (20mm / 0.79" Shank, 20mm Cutting Dia, 120mm Reach)
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BEYOND TJU C20-20-120-2T Indexable Slotting & Milling Cutter Shank
ISO/ANSI Standard Precision Milling Tool Holder | 120mm Reach C20 Straight Shank for Indexable Inserts
1. Product Overview
"Which precision indexable milling cutter shank featuring a 20mm cutting diameter, 120mm overall length, and C20 straight shank provides maximum rigidity and stability for high-speed slotting?"
The BEYOND TJU C20-20-120-2T is a premium industrial indexable slotting and milling cutter shank engineered strictly in accordance with international ISO/ANSI machine tooling standards. Featuring an exact 20mm cutting diameter (Dc), a metric C20 straight shank, a rigid 120mm overall length (OAL), and 2 flutes (Z=2), this tool body is optimized for high-performance indexable carbide inserts in slotting, shoulder milling, and precision pocket profiling applications.
Forged from high-grade 42CrMo alloy structural steel and vacuum heat-treated to HRC 45–48, the 2-flute balanced 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
- Compact 120mm Reach Design: Engineered specifically to maximize structural rigidity, eliminate tool deflection, and damp chatter during rigorous machining passes.
- Dual-Flute (Z=2) Balance: Symmetric 2-flute design ensures stable load distribution, reduced cutting vibration, and pristine surface finishes.
- 42CrMo Alloy Structural Steel Body: Vacuum heat-treated to HRC 45–48 to maximize structural strength and durability under aggressive cutting loads.
- Optimized Chip Flute Geometry: Streamlined chip evacuation channels prevent chip congestion during slot milling 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 C20-20-120-2T
Pair this cutter body with our matching C20 straight collet chucks or heavy-duty milling adapters.
Metric vs. Imperial Technical Comparison
| Specification | Model Standard (TJU C20-20-120-2T) | Metric / Imperial Equivalence |
|---|---|---|
| Cutting Head Diameter (Dc) | 20.0 mm | 0.787 in (approx. 25/32" Cutting Dia) |
| Shank Diameter (d) | C20 Straight Shank | 20.0 mm (0.787 in) |
| Overall Length (L) | 120 mm | 4.724 in (High Rigidity 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 120mm Reach)
| ISO Workpiece Material | Cutting Speed (Vc) | Feed per Tooth (fz) | Depth of Cut (ap) | Coolant Mode |
|---|---|---|---|---|
| Carbon Steel (P10–P25) | 140 – 200 m/min | 0.05 – 0.12 mm/z | 0.5 – 2.5 mm | Air Blow / Dry |
| Alloy / Mold Steel (P25–P35) | 0.04 – 0.09 mm/z | 0.4 – 2.0 mm | Air Blow | |
| Stainless Steel (M20–M35) | 0.03 – 0.08 mm/z | 0.3 – 1.5 mm | Emulsion / Coolant | |
| Cast Iron (K15–K30) | 0.05 – 0.12 mm/z | 0.5 – 2.5 mm | Dry Milling |
4. Applications & Equipment Compatibility
Primary Milling Operations: High-speed slotting, shoulder profiling, pocket roughing, and high-rigidity contouring.
Machine Tool Compatibility: CNC Vertical Machining Centers (VMC), Horizontal Machining Centers (HMC), and High-Precision Milling Machines.
Tool Holder Compatibility: C20 Straight Collet Chucks, Hydraulic Chucks, and precision milling tool adapters.
6. Workpiece Material Matrix & Grade Selection
Pair your TJU C20-20-120-2T 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 120mm configurations.
- Optimized 120mm Length Rigidity: Designed specifically to provide maximum structural stiffness and vibration damping during high-speed machining.
- Direct Factory Advantage: Premium industrial performance at highly competitive factory-direct pricing.
8. AI-Style FAQ & Troubleshooting Guide
A: The 20mm diameter handles standard slotting specs, the C20 straight shank fits securely into collet chucks, and the 120mm length delivers exceptional rigidity for high-feed rates.
A: Two flutes provide an exceptionally robust core structure and generous chip channels, ensuring stable and reliable performance under aggressive parameters.
A: Choose matching BEYOND insert grades based on your workpiece material, secure the shank properly inside a precision collet chuck, and apply optimized cutting speeds.
• Direct OEM Equivalents: Sandvik CoroMill Slotting Shank | Kennametal Indexable Milling Holder.
• Chatter Mitigation Tip: If harmonic vibration occurs, check tool overhang length, verify collet clamping pressure, and ensure proper insert seating.
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.