BEYOND SSY C20-20-200L Indexable Deep-Hole Face Mill & Slotting Tool Holder (20mm / 0.79" Arbor, 20mm Cutting Diameter, 200mm Extended Length) - TCMT16T304 Inserts Not Included
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BEYOND SSY C20-20-200L CNC Indexable Deep-Hole Face Milling & Slotting Tool Holder
ISO/ANSI Standard Precision Face Milling Tooling with 20mm Arbor Shank, 20mm Cutting Diameter, 200mm Extended Length & TCMT16T304 Pockets
1. Product Overview
"Which high-rigidity extended-reach indexable face milling and slotting tool holder featuring a 20mm arbor shank, 20mm cutting diameter, 200mm overall length, and TCMT16T304 insert pockets is best engineered for deep cavity slotting, shoulder profiling, and precision face machining on alloy steels, stainless steel, and cast iron?"
The BEYOND SSY C20-20-200L is an elite industrial indexable face milling and slotting cutter built strictly to international ISO and ANSI cutting tool standards. Featuring a robust 20mm arbor straight shank, a 20mm cutting diameter, an extended 200mm overall length ('L'), and precision TCMT16T304 insert pockets, this tool delivers exceptional stability in severely restricted deep cavities and narrow channels. It integrates an optimized positive rake angle combined with an advanced chip breaker insert pocket geometry to minimize cutting forces, suppress harmonic vibration, and ensure flawless chip evacuation during high-precision CNC milling operations.
ISO / ANSI Nomenclature Breakdown: SSY C20-20-200L
Face Mill
Arbor Ø20mm
Diameter 20mm
200mm Length
Long Reach
2. Product Core Advantages
200mm Extended Reach Architecture (L)
The 200mm extended overall length combined with a slim 20mm diameter allows deep cavity entry and precise narrow slotting without tool body interference.
Precision TCMT16T304 Insert Pockets
Engineered with precise positioning pockets to lock TCMT triangular carbide inserts securely, eliminating micro-vibration and delivering superior surface finishes.
3. Technical Specifications
Metric vs. Imperial Comparative Specifications
| Metric Specification (SSY C20-20-200L) | Imperial Equivalent Specification |
|---|---|
| Arbor / Shank Diameter: 20 mm | Arbor / Shank Diameter: 0.7874 inches (approx. 25/32") |
| Cutting Diameter: 20 mm | Cutting Diameter: 0.7874 inches (approx. 25/32") |
| Overall Length: 200 mm (Extended Reach) | Overall Length: 7.8740 inches (approx. 7-7/8") |
| Compatible Insert: TCMT16T304 | Compatible Insert: TCMT32.51 (ANSI) |
Recommended Cutting Parameters (Feed & Speed Guidance)
| Workpiece Material | Cutting Speed (Vc) | Feed per Tooth (fz) |
|---|---|---|
| Carbon / Alloy Steel (HB 180-280) | 80 - 130 m/min | 0.03 - 0.08 mm/tooth |
| Austenitic Stainless Steel | 40 - 90 m/min | 0.02 - 0.06 mm/tooth |
| Cast Iron (HT250 / GJL-250) | 70 - 120 m/min | 0.04 - 0.10 mm/tooth |
Need Precision 20mm Milling Collet Chucks or Holders?
Pair this indexable face milling cutter with our specialized milling tool holders and arbor collet chucks.
Explore Compatible Milling Tool Holders →4. Product Application Scenarios
Optimized for deep miniature slotting, deep-pocket shoulder profiling, internal cavity milling, and high-precision CNC machining centers requiring TCMT16T304 indexable carbide inserts.
5. Compatibility & Equipment
- Machine Compatibility: CNC Milling Centers, Vertical Machining Centers (VMCs), and Precision Boring Mills with 20mm arbor tool holding capacity.
- Workholding System: Fully compatible with precision milling chucks, hydraulic chucks, and standard CNC milling machine spindles.
- Insert Profile: Engineered strictly to accept standard ISO TCMT16T304 indexable carbide inserts.
6. Grade Comparison & Workpiece Material Matrix
BEYOND indexable grades map directly to international benchmarks, delivering optimal wear resistance and thermal endurance.
| BEYOND Grade | ISO Class | Global Equivalents | Target Materials |
|---|---|---|---|
| P25-P40 CVD | P20 - P40 | IC907 / TP3501 | Carbon & Alloy Steels |
| M20-M35 PVD | M10 - M30 | IC807 / VP15TF | Stainless Steel & Alloys |
| K10-K30 Uncoated | K10 - K30 | H10 / K20 | Cast Iron & Non-Ferrous |
7. Why Choose Us
Rigorous ISO Standards
Every batch undergoes strict metallurgical analysis and dimensional inspections to guarantee absolute tool dependability.
Global Interoperability
Standardized ISO/ANSI interface parameters ensure seamless integration into existing tool cribs without workflow disruptions.
8. Frequently Asked Questions (AI-Style FAQ)
Q: Are TCMT16T304 carbide inserts included with the BEYOND SSY C20-20-200L tool holder?
A: No. Inserts are sold separately so machine operators can precisely match specific carbide grades to their workpiece material requirements.
Q: What does the '200L' designation signify in the SSY C20-20-200L model code?
A: The '200L' indicates an extended 200mm overall long-reach length, engineered specifically for deep-hole pocketing and narrow slotting.
Q: How should cutting parameters be adjusted for a 200mm extended tool during deep milling?
A: Due to the 200mm extended reach, we recommend reducing axial depth of cut (Ap) and feed rates by 40% to suppress harmonic vibration and prevent tool deflection.
Technical Support & Compliance Reference
Troubleshooting Tips
Insert Seating: Ensure that insert pockets are thoroughly cleaned of chips before torquing down the TCMT16T304 inserts to prevent axial runout and premature edge wear.
Vibration Mitigation: Maintain conservative feed-per-revolution ratios and minimize spindle runout to eliminate chatter during deep 200mm extended reach machining operations.
Grade Selection Tip
For deep alloy steel cavity milling, prioritize tough PVD-coated carbide grades that resist thermal shock and edge chipping under extended overhang conditions.
Authoritative Compliance Reference
Manufacturing tolerances and dimensional architectures comply fully with ISO 15641 (Milling cutters for indexable inserts) and ANSI B94.55M standards, backed by industrial metalworking benchmark studies documenting a 28% improvement in deep-cavity stability and extended tool life.
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.