Beyond SCKCL2020K09 Left Hand Indexable Turning Tool Holder 20x20mm
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✓ Global Shipping: Delivery: generally 5–20 business days, depending on destination and shipping method.
✓ Guaranteed Quality: Check model, dimensions and compatibility before ordering. | Direct Factory Outlet
✓ Technical Support: Need grade selection help? Contact Engineer
💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
⚠️ IMPORTANT NOTICE: The carbide insert shown installed on the toolholder is for visual demonstration purposes only. All inserts must be ordered separately.
BEYOND SCKCL2020K09 Left-Hand Indexable Turning Tool Holder
Industrial 20x20mm Square Shank | 75° Lead Angle for Precision CNC Left-Hand Lathe Profiling
1. Product Overview
"Which toolholder provides the ultimate tool rigidity and smooth chip evacuation for left-hand external profiling on a standard CNC lathe?"
The Beyond SCKCL2020K09 is engineered precisely to answer this demand. Utilizing a stable screw-on clamping system, this left-hand external turning toolholder delivers exceptional stability and anti-vibration performance. It is perfectly matched with standard CCMT09T3 (CCMT 32.5) inserts. By combining the rigorous substrate mechanics of the holder with the advanced chipbreaker geometries of the inserts, operators achieve optimized chip curling, reduced cutting heat, and impeccable surface finishes on multi-axis CNC operations.
2. Core Performance Advantages
- High-Tensile Alloy Steel Matrix: Manufactured from premium, heat-treated alloy steel (HRC 42-45) to minimize deflection and withstand extreme impact during interrupted cuts.
- Precision-Engineered 75° Approach Angle: Specially configured for side turning, facing, and profiling operations where balancing radial and axial cutting forces is critical to preventing workpiece deflection.
- Flawless CNC Pocket Seating: Pocket dimensions are strictly controlled down to the micron level to ensure absolute insert stability and repeatable positioning accuracy.
- Industrial Black Oxide Finish: Delivers superior corrosion resistance and anti-galling properties under high-temperature synthetic coolant environments.
ISO Designation & Nomenclature Decoding
S — C — K — C — L — 20 — 20 — K — 09
| S | Clamping Method: Screw-On Mechanism for compact clearance |
| C | Insert Shape: Rhombic 80° Clearance Design |
| K | Approach Angle: 75° Lead Angle for optimal side profiling |
| C | Insert Clearance Angle: 7° Normal Relief Angle |
| L | Tool Hand: Left-Hand Direction Cutting Mode |
| 20 | Shank Height: 20 mm Metric (0.787" Equivalent) |
| 20 | Shank Width: 20 mm Metric (0.787" Equivalent) |
| K | Toolholder Length: 125 mm Total Length (4.921" Equivalent) |
| 09 | Cutting Edge Length: Approx. 9.7 mm for CCMT09 / CCMT32.5 |
Material & Chipbreaker Geometry Integration
The underlying performance depends on the insert pairing. When using CCMT09T3 inserts with an HM/HF medium-to-finishing chipbreaker, the 7° clearance allows the sharp cutting edge to plunge with minimal tool pressure. The substrate provides localized heat absorption, preventing structural softening while managing chip breakage into short, manageable 'C' shapes.
🛒 Complete Your Setup With Certified Spares & Inserts
3. Technical Specifications & Dimension Cross-Reference
Metric vs. Imperial Inch Equivalency Table
| Metric Model Code | ANSI/Imperial Code | Shank Dimension (H x W) | Total Length (OAL) | Clamping Screw Metric/Inch |
|---|---|---|---|---|
| SCKCL2020K09 | SCKCL 12-3B | 20 x 20 mm / 0.787" x 0.787" | 125 mm / 4.921" | M2.5 x 6.5mm / Torx T8 |
Recommended Lathe Feed Rates & Turning Speeds
| Workpiece Material Type | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Carbon & Alloy Steel (P) | 150 - 300 m/min (490 - 980 SFM) | 0.08 - 0.30 mm/rev (0.003" - 0.012" IPR) | 0.3 - 2.5 mm (0.012" - 0.098") |
| Stainless Steel (M) | 100 - 200 m/min (325 - 650 SFM) | 0.05 - 0.22 mm/rev (0.002" - 0.009" IPR) | 0.2 - 1.8 mm (0.008" - 0.071") |
| Gray & Nodular Cast Iron (K) | 120 - 250 m/min (390 - 820 SFM) | 0.10 - 0.35 mm/rev (0.004" - 0.014" IPR) | 0.4 - 3.0 mm (0.016" - 0.118") |
4. Product Applications & Equipment Compatibility
The SCKCL2020K09 toolholder is universally standardized across medium-sized metal component operations. Its left-hand profile configuration matches seamlessly with reverse spindle orientations or back-turning tasks on CNC turrets.
5. Beyond Carbide Grade Matrix & Equivalent Cross-Models
| Beyond Grade | Coating Layer Architecture | ISO Application Matrix | Industrial Brand Equivalents |
|---|---|---|---|
| BY2015 | Premium Multi-Layer CVD TiN/Al2O3/TiCN | ISO P10-P25 | Sandvik GC4315 | Kennametal KCP10B | Walter WPP10S |
| BY4025 | Thick Film Thermal Shock CVD Al2O3 Matrix | ISO P20-P40 / M20-M35 | Sandvik GC4325 | Kennametal KCP25B | Walter WPP20S |
| BY5030 | Nano-Structured High-Density PVD TiAlN | ISO M10-M30 / ISO S10-S25 | Sandvik GC1115 | Kennametal KSS20M | Iscar IC807 |
6. Machinist Troubleshooting Guide
Symptom: Micro-Chipping on the Cutting Tip Edge
Root Cause: Severe vibration or inadequate insert clamping torque.
Action Plan: Inspect clamping screw condition. Replace worn T8 screws. Shorten toolholder overhang or select an insert with a larger corner radius (e.g., CCMT09T308 instead of 09T304).
Symptom: Severe Built-Up Edge (BUE) in Stainless Steels
Root Cause: Cutting velocity is too slow, causing localized material welding.
Action Plan: Increase surface feet per minute (SFM / Vc) to drive up cut temperature past the adhesion threshold, or upgrade to our specialized PVD grade BY5030.
7. Why Choose Beyond Tools?
Beyond supplies premium ISO-certified industrial indexable tool solutions worldwide. We bypass retail markups to deliver high-precision machining tolerances directly to your shopfloor.
Verified Global Client Experiences
"The geometry alignment on this SCKCL2020K09 left-hand holder is top tier. We run thousands of small shafts in 42CrMo4 steel on our Index lathes. Pocket tolerance does not budge over long series. Extremely robust."
"Needed a solid metric 20mm left hand stick tool for back-turning some custom bushings. Fits perfectly in our Haas turret. Hardware pack included is solid. Incredible tool for the money."
"Ottimo prodotto. Very clean black finish, durable pocket. Holds standard ANSI CCMT 32.51 inserts tightly. Will buy again."
"Pocket dimensions are extremely flat. Excellent rigidity on high-speed finishing operations."
8. Frequently Asked Questions
Q: What is the primary operational difference between SCKCR and SCKCL models?
A: The last character defines the cutting direction hand. "R" designates Right-Hand direction, whereas this SCKCL model is a Left-Hand version, primarily utilized for reverse spindle setups or specific sub-spindle profiling runs.
Q: Are the screw and wrench proprietary, or do they fit global industrial standards?
A: They are 100% compliant with standard international specifications. The holder takes standard M2.5 indexable screws driven by a conventional Torx T8 flag key wrench.
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.