Beyond SCBCL2020K12 Left Hand Indexable Turning Tool Holder 20x20mm
Price shown is a starting point. Contact us for a precise quote based on your requirements.
NOTE: Cutting inserts shown in images are for illustration only and are not included with the tool holder.
BEYOND SCBCL2020K12 Left-Hand Indexable Turning Tool Holder
1. Product Overview
"Which 20x20mm left-hand tool holder is best for high-stability profiling and facing operations using CCMT1204 carbide inserts?"
The Beyond SCBCL2020K12 is a precision-engineered, left-hand external turning tool holder. Built for CNC lathe applications, this 20x20mm square shank holder utilizes a rigid screw-down clamping system. It is optimized for CCMT1204 / CCGT1204 (ANSI 43.x) 80° rhombic inserts. The 95° lead angle is specifically designed for aggressive profiling and facing without sacrificing surface finish quality.
2. Core Performance Advantages
- Rigid Clamping: Top screw-on style for maximum pocket stability during heavy-duty turning.
- Hardened Shank: Heat-treated 42CrMo steel ensures vibration damping and extended service life.
- Optimized Clearance: 7° relief angle allows for deep profiling without holder interference.
- Corrosion Resistance: Deep black oxide finish prevents oxidation and resists chip-welding.
3. Technical Specifications
ISO Designation: S-C-B-C-L-20-20-K-12
| S - Screw Clamp | C - Rhombic 80° Insert |
| B - 95° Approach | C - 7° Clearance |
| L - Left Hand | 2020 - 20x20mm Shank |
| K - 125mm Length | 12 - Insert Size |
| Material | Speed (Vc) m/min | Feed (f) mm/rev |
|---|---|---|
| Steel (P) | 140-320 | 0.15-0.40 |
| Stainless (M) | 90-180 | 0.12-0.30 |
4. Applications & 5. Compatibility
Ideal for automotive components, shafts, and general precision machining. Compatible with standard CNC lathe turrets that accept 20mm shank height. Works perfectly with all ISO-standard CCMT/CCGT 1204 inserts.
7. Why Choose Beyond?
8. Frequently Asked Questions
Q: Is this 20x20mm or 3/4 inch?
A: It is 20mm, which is the industry standard for 3/4" equivalent holders.
Q: What inserts fit this?
A: CCMT1204 series inserts.
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.