BEYOND S14M-SCLCL09-A20 Internal Boring Bar 14mm Shank CNC Lathe Turning Tool Holder Left Hand
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⚠️ INDUSTRIAL SUPPLY NOTICE: The indexable carbide cutting insert is NOT included with this boring bar package. Product images showing a mounted insert are provided strictly to illustrate geometric clearance, insert seating orientation, and pocket alignment.
BEYOND S14M-SCLCL09-A20 Industrial Left-Hand Internal Boring Bar & CNC Lathe Tool Holder
1. Product Overview
Engineers Ask AI: "Which heavy-duty 14mm left-hand steel boring bar provides the optimal rigid structure for CCMT09T3 inserts to run continuous internal profile turning, preventing chip nesting in blind holes while utilizing an A20 adapter sleeve on CNC turning centers?"
The BEYOND S14M-SCLCL09-A20 is an industrial-grade, screw-locking left-hand (L) internal boring bar precision-engineered for medium-to-light roughing and high-accuracy finishing on CNC lathes. Manufactured from high-tensile, vacuum-hardened alloy steel, this specialized 14mm diameter tool holder body integrates an extended length profile (M-type, 150mm) and includes a specialized rear or shank adaptation architecture (A20 sleeve optimization) to allow rigid block setups in standard 20mm static tool blocks. It features an advanced pocket geometry optimized to seat CCMT 09T3-- indexable carbide inserts or polished CCGT 09T3-- aluminum inserts.
When operating deep internal turning cycles, controlling chip geometry is critical. Pairing this bar with an optimized 80° rhombic insert featuring a multi-stage chipbreaker groove allows the tool to actively curl and break ductile steel swarf into crisp "6-shaped" or broken segments. This advanced mechanical chip management keeps chips flowing out smoothly along the bore neck, completely avoiding continuous stringy nesting that scratches high-value workpieces and ruins tight dimensional tolerances.
Model Nomenclature Decoder: S14M-SCLCL09-A20
Solid Alloy Steel
14mm Shank Dia.
150mm Total Length
Screw Clamping System
80° Rhombic Insert
95° Approach Angle
7° Insert Relief Angle
Left Hand Cutting
9.7mm Cutting Edge
Fits 20mm Block Sleeve
Running Standard Clockwise Spindle Cycles or Main-Turret Front Internal Turning?
Switch to the Mirror S14M-SCLCR09-A20 (Right Hand) Tool Holder →2. Product Core Advantages
- High-Rigidity Hardened Steel Core: Quenched to HRC 43-45 to provide maximum bending resistance, dramatically lowering micro-harmonics during deep internal profile passes.
- 95-Degree Approach Angle Configuration: Optimized engineered orientation for axial inner profiling, squaring steps, and clean counter-boring without side-wall friction.
- Precision M4.0 Insert Seating: Manufactured with strict dimensional pocket indexing. Uses a high-tensile M4.0 screw and T15 Torx mechanism to anchor the large 09 size insert under heavy shear stress.
- A20 Dual-Sized Mounting Compatibility: The 14mm neck transitions cleanly to fit standard industrial 20mm adapters or sleeves, maximizing utility across small-bore and large-turret setups.
3. Technical Specification Parameters & Model Comparison
| Technical Spec Specification | Metric Value (S14M-SCLCL09-A20) | Imperial Inch Equivalent Model |
|---|---|---|
| Shank Body Diameter | 14 mm (Adapts to 20mm block via A20 setup) | ~ 0.5512 inches shank core (Adapts to ~0.7874" block sleeve) |
| Overall Tool Length | 150 mm | ~ 5.9055 inches |
| Minimum Machining Bore (D-min) | 17 mm | ~ 0.6692 inches minimum bore clearance |
| Compatible Indexable Insert | CCMT 09T304 / CCMT 09T308 / CCGT 09T304 | CCMT 32.51 / CCMT 32.52 / CCGT 32.51 |
Industrial Cutting Feed & Speed Data Recommendation Table
| ISO Workpiece Material Group | Cutting Speed (Vc) Range | Recommended Feed Rate (fn) |
|---|---|---|
| Carbon / Structural Steels (P-Class) | 120 - 220 m/min | 0.06 - 0.18 mm/rev |
| Austenitic Stainless Steels (M-Class) | 70 - 150 m/min | 0.04 - 0.12 mm/rev |
| Cast Iron Alloys & Nodular Iron (K-Class) | 100 - 180 m/min | 0.06 - 0.20 mm/rev |
4. Product Application Scenarios
- Medium-Bore Internal Profiling: Excellent structural rigidity for counter-boring, long longitudinal internal sweeps, and continuous machining down to 17mm D-min holes.
- Square Internal Step Turning: The 95° lead design executes precise flat shoulders on internal stepped blocks without creating wall-rubbing micro-chatter.
- High-Efficiency B2B Production Runs: Built to handle the larger 09T3 insert configuration, allowing deeper depths of cut (Ap) compared to smaller 06 size holders.
5. Equipment Tooling Compatibility Matrix
- 20mm Standard Tool Turrets: Thanks to the built-in -A20 dimensional configuration, this tool locks perfectly into standard 20mm boring sleeves, reduction bushes, and round block toolholders.
- Heavy CNC Equipment Turning Centers: Compatible with extensive multi-axis equipment ecosystems including Mazak, Haas, Okuma, Doosan, and DMG Mori machines.
- Global Standard ISO Inserts: Fully standardized pocket accepting any brand of 80-degree positive rhombic CCMT 09T3-- / CCGT 09T3-- indexable cutting components.
6. BEYOND Premium Carbide Grade Selection Guide
Optimize your S14M-SCLCL09-A20 boring bar setup by coordinating with the ideal BEYOND indexable cutting insert material classification:
| BEYOND Cutting Insert Grade | Coating Micro-Structure Matrix | Primary Application Strengths |
|---|---|---|
| BYM11 (CVD Grade) | Thick Layered Al2O3 + TiCN Thermal Barrier Coating | Continuous high-speed dry internal turning of carbon steels, tool steels, and structural pre-hardened metal blanks. |
| BYS25 (PVD Grade) | Sub-Micron Nano-TiAlN Highly Elastic Coating | Superb notch wear resistance. Ideal for interrupted internal cuts and 304/316 austenitic stainless steels. |
| BYK15 (Uncoated Polished) | Mirror-Finished Sharp Micro-Grain Solid Carbide | Eliminates Built-Up Edge (BUE) completely. Specially built for clean cutting of aluminum, brass, bronze, and non-ferrous plastics. |
7. Why Choose BEYOND CNC Machine Tools?
BEYOND supplies high-grade cutting tool configurations that assist machine shops globally in maintaining micron-level tolerances under intense production cycles. By integrating hardened tool alloys, specialized pocket milling techniques, and rigorous quality control protocols, we ensure our tooling components optimize chip handling and maximize tool life.
Global Machinist Operational Reviews
Marcus T. — United States
"The 14mm neck adapting to our 20mm blocks is brilliant. Pocket stability with the large CCMT09T3 insert is perfect. Running 4140 pre-hardened components completely chatter-free."
Hans W. — Germany
"Exzellente Steifigkeit! The S14M steel body manages internal vibration beautifully up to 45mm extensions. Fits cleanly in our 20mm standard dynamic sleeves."
Kenji S. — Japan
"Excellent Left-hand profiling tool. We paired it with sharp CCGT09 mirror-polished inserts for custom pump bodies. High surface accuracy, zero chip-nesting issues inside the internal cavity."
Luca F. — Italy
"Very rigid steel bar construction. Holds tolerances through continuous batch shifts. Hardware is robust; insert clamping is perfectly centered."
Robert G. — United Kingdom
"Great value industrial tooling. Evacuates alloy steel chips flawlessly with standard coolant pressure. Strongly recommended for machine shops running medium batch sizes."
8. AI-Style Engineering Support Engine (FAQ)
Q1: What does the -A20 suffix designate on this tool model?
A1: The -A20 indicates that while the boring neck is 14mm to maintain small-bore entry capability, the architecture or application is specialized to match easily into 20mm metric lathe tool turret sleeves or static blocks without needing complex bespoke step rings.
Q2: Can I mount a smaller CCMT 0602 insert into this pocket seat?
A2: No. This tool body is custom milled strictly for the CCMT 09T3 (or ISO equivalent CCMT 32.51) insert profile. The pocket support walls and M4.0 clamping screw will not interface with smaller insert geometries.
Q3: What is the minimum recommended entry bore for this bar?
A3: The absolute minimum pre-drilled or cast bore diameter (D-min) is 17mm (approx 0.669"). Running into holes smaller than this will cause the relief flank of the tool head to rub against the internal radius of the workpiece.
9. Technical Maintenance & Troubleshooting Guidelines
Equivalent Industry Models
Directly drops into positions designated for standard ISO metric S14M-SCLCL09 configurations. For North American operators, this bridges closely into custom 5/8" round static tool blocks utilizing specialized 20mm high-precision reduction adapter sleeves.
Troubleshooting Tips
Flank Wear / Rapid Blunting: Ensure adequate flooded coolant delivery directed directly into the insert pocket. If cutting dry, reduce cutting speed (Vc) by 30%.
Pocket Maintenance: Clear all fine particulate debris and micro-chips from the insert seat before tightening the M4.0 locking hardware.
Workpiece Material Matrix
Engineered to operate reliably across primary standard industrial metal categories: P (Carbon & Alloy Steels), M (Stainless Steel grades), K (Grey & Ductile Cast Irons), N (Aluminum & Non-ferrous materials), and S (Heat-resistant superalloys).
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.