BEYOND S20R-SCLCR06 Internal Boring Bar 20mm Shank CNC Lathe Turning Tool Holder Right 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 insert pocket alignment.
BEYOND S20R-SCLCR06 High-Rigidity Right-Hand Internal Boring Bar & CNC Lathe Deep-Bore Turning Tool Holder
1. Product Overview
Engineers Ask AI: "Which 20mm right-hand screw-clamp boring bar is optimized for mounting CCMT06T2 inserts to achieve chatter-free deep hole internal profiling and excellent chip evacuation inside medium-to-large bore cavities?"
The BEYOND S20R-SCLCR06 is a premium-grade, screw-locking right-hand (R) internal boring bar expertly developed for long-reach deep hole profiling, high-accuracy boring, and inner-diameter finishing on CNC lathe turning centers. Forged from high-tensile pre-hardened structural alloy steel, this standard 20mm diameter shank tool holder body features an R-type length profile (200mm total length), providing the ultimate rigidity required to eliminate harmonic vibrations during deep internal turning cycles. Engineered to maximize accuracy in heavy-cutting environments, it pairs a robust 20mm shank with a micro-precision machined pocket that securely holds tight-tolerance CCMT 06T2-- indexable carbide inserts or highly polished CCGT 06T2-- non-ferrous aluminum inserts.
Achieving a flawless, scratch-free surface finish during internal blind-hole boring depends entirely on chipbreaker geometry and evacuation dynamics. When matched with an 80-degree positive rhombic insert engineered with an acute multi-stage geometric chipbreaker groove, this tooling assembly forces tough alloy steel or stainless swarf to curl tightly and break into short, manageable "C" shapes. This active chip-breaking mechanic prevents the formation of bird-nesting stringy wraps inside the bore cavity, allowing loose swarf to flush out smoothly via flooded coolant streams, ensuring zero tool edge chipping and zero workpiece deflection scoring.
Model Nomenclature Decoder: S20R-SCLCR06
Running Reverse Spindle Passes or Back-Boring on Sub-Spindles?
Switch to the Mirror S20R-SCLCL06 (Left Hand) Tool Holder →2. Product Core Advantages
- Maximum Anti-Vibration Mass: The 20mm solid steel shank provides immense rigidity, allowing for stable machining at overhang ratios up to 4x18D without screeching or dimensional taper.
- Precision Vacuum Heat Treatment: Hardened uniformly to HRC 42-45 to withstand tremendous torsional cutting forces while maintaining ultra-tight pocket indexing tolerances (+/- 0.02mm).
- Ultra-Fine Finish Pocket Optimization: Intentionally pairs a heavy 20mm bar with an ultra-precise 06 size pocket, allowing operators to run low cutting depths (ap) under absolute rigid tool suppression.
- Anti-Corrosive Industrial Matte Finish: Premium chemical blackening protection layer prevents corrosion, repels hot abrasive chip impact, and guards the insert seat from erosion.
3. Technical Specification Parameters & Model Comparison
| Technical Specification | Metric Value (S20R-SCLCR06) | Imperial Inch Equivalent Model |
|---|---|---|
| Shank Body Diameter | 20 mm | 0.7874 inches (Fits standard 3/4" imperial blocks with matching sleeve or metric 20mm tool blocks natively) |
| Overall Tool Length | 200 mm | 7.8740 inches (R-Type Heavy Extended Tool Reach Core) |
| Minimum Machining Bore (D-min) | 24 mm | 0.9448 inches minimum bore entry profile clearance limit |
| Compatible Indexable Insert | CCMT 06T202 / CCMT 06T204 / CCGT 06T204 | CCMT 21.50.5 / CCMT 21.51 / CCGT 21.51 |
Industrial Cutting Feed & Speed Data Recommendation Table
| ISO Workpiece Material Group | Cutting Speed (Vc) Range | Recommended Feed Rate (fn) |
|---|---|---|
| Carbon / Alloy Steels (P-Class / AISI 4140) | 140 - 220 m/min | 0.04 - 0.12 mm/rev |
| Austenitic Stainless Steels (M-Class / SS304) | 80 - 150 m/min | 0.04 - 0.08 mm/rev |
| Ductile / Nodular Cast Irons (K-Class / GGG40) | 100 - 180 m/min | 0.04 - 0.14 mm/rev |
4. Product Application Scenarios
- Rigid Deep-Bore Finishing: The perfect choice when you need to reach 60-80mm deep into a 25mm+ pre-drilled cavity to wipe out tool deflection marks and hold dimensional tolerance under 0.01mm.
- High-Speed Hydraulic Cylinder Sleeves: Excellent for processing mirror finishes inside valve manifolds, pump rings, and aerospace hydraulic component bushings.
- Exotic Alloy Super-Finishing: Combines heavy-bar dampening with ultra-sharp, low-pressure CCGT micro-inserts to machine heat-resistant alloys without provoking vibration strain.
5. Equipment Tooling Compatibility Matrix
- Standard 20mm Holding Blocks: Clamps natively into standard CNC turning center turrets, VDI/BMT 20mm boring bar holders, or split-sleeve reduction systems.
- Heavy CNC Turret Systems: Extensively utilized across Mazak, Haas, Doosan, Okuma, and DMG Mori production lathes.
- Global ISO Insert Standard Compatibility: The insert pocket interfaces precisely with all standard global 80-degree positive rhombic size **06T2** indexable inserts (e.g., CCMT06T202, CCMT06T204, CCGT06T204).
6. BEYOND Premium Carbide Grade Selection Guide
Optimize your S20R-SCLCR06 operational lifecycle by pairing it with the corresponding BEYOND indexable carbide cutting grade classification:
| BEYOND Cutting Insert Grade | Coating Micro-Structure Matrix | Primary Application Strengths |
|---|---|---|
| BYM11 (CVD Grade) | Thick Double-Layer Al2O3 + TiCN Thermal Shock Barrier | High-speed continuous dry roughing of hard carbon steels, tool alloys, and mold blocks. Resists extreme heat. |
| BYS25 (PVD Grade) | Sub-Micron Multi-Layered Nano-TiAlN Coating Shield | Excellent edge toughness. Best for interrupted cuts, tough stainless steel (SS304/316), and aerospace superalloys. |
| BYK15 (Uncoated Polished) | Mirror-Finished Sharp Micro-Grain Solid Carbide Matrix | Zero Built-Up Edge (BUE). Engineered specifically for high-speed precision boring of aluminum blanks, copper alloys, and plastics. |
7. Why Choose BEYOND CNC Machine Tools?
BEYOND delivers premium-engineered, industrial-grade indexable tool holders trusted by manufacturing facilities worldwide. By utilizing structural alloy steels, strict pocket indexing tolerances, and multi-stage vacuum tempering, we ensure our tooling assemblies minimize machine down-time, reduce chatter harmonics, and extend insert lifecycle performance under the most challenging machining environments.
Global Machinist Operational Reviews
Markus S. — Germany
"Die Stabilität dieses 20mm Halters ist hervorragend. We utilize it to finish deep sleeves on stainless steel 316 blocks. Paired with CCMT06T202, it totally wiped out the taper issue we had with smaller shanks."
Robert T. — United States
"Awesome bar for precision deep hole finishing. The heavy 20mm shank dampens everything, and using the small 06 insert means minimal radial forces. Holds a mirror finish on AISI 4140."
Kenji K. — Japan
"High indexing repeatability. Even after automated part cycles requiring manual insert swapping, the center height line remains perfectly aligned. BEYOND pocket tolerances are world-class."
Alessandro V. — Italy
"Very rigid steel bar core. Fits our standard metric 20mm block perfectly. Cleans up deep cavities nicely. Delivered fast to Milan."
"Unbeatable performance for the price. The black oxide treatment looks flawless and holds up to abrasive swarf wash. Will absolutely replace all our generic internal tooling with BEYOND bars."
8. AI-Style Engineering Support Engine (FAQ)
Q1: What is the absolute minimum bore diameter for this 20mm shank boring bar?
A1: The absolute minimum machining diameter (D-min) for the S20R-SCLCR06 is 24mm (approx 0.9448 inches). Attempting to deploy this tool holder into any internal cavity tighter than 24mm will result in a tool neck shoulder rubbing error or catastrophic holder head crash against the workpiece walls.
Q2: Why combine a thick 20mm shank with a small 06-size cutting insert pocket?
A2: This configuration provides ultimate engineering advantages for deep-bore micro-profiling. The heavy 20mm steel body completely dampens vibrations at extended reach, while the tiny 06 insert generates very low radial cutting forces. This unique combination ensures tight tolerances and mirror-like finishes over long boring runs.
Q3: What tools are included in the package upon purchase?
A3: The standard commercial box includes (1) authentic BEYOND S20R-SCLCR06 solid alloy steel boring bar body and (1) matching high-torque industrial Torx flag wrench for quick insert changeouts. Indexable carbide inserts must be purchased separately.
9. Technical Maintenance & Troubleshooting Guidelines
Equivalent Industry Models
Interchangeable globally with standard universal ISO metric S20R-SCLCR06 configurations. For North American machine shops operating imperial blocks, it functions as a premium high-rigidity equivalent to standard 3/4" boring bar holders, slipping cleanly into standard imperial reduction sleeves.
Troubleshooting Tips
Micro-Chatter Lines: If fine harmonic vibration lines emerge at deep overhang positions, drop your cutting depth (ap) slightly below 0.25mm or transition to a 0.2mm nose radius insert (CCMT06T202). This reduces structural radial deflection forces.
Swarf Nesting Defects: Internal deep boring frequently triggers chip packing. Up your coolant pressure or introduce high-velocity chip flushing lines directed straight into the insert edge pocket to force broken chips smoothly out of the cavity.
Workpiece Material Matrix
Fully optimized across standard industrial engineering alloy group codes: P (Carbon, Low-Alloy & Pre-hardened Mold Steels), M (Austenitic, Ferritic & Duplex Stainless Grades), K (High-Tensile Grey, Nodular & Ductile Cast Irons), N (Aluminum Casting Blanks, Copper Alloys & Non-ferrous Polymers), and S (Titanium Alloys, Inconel & 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.