BEYOND H1204L-SCLCR03-16 Tapered High-Speed Steel Internal Boring Bar | CNC Lathe Tool Holder for CCGT03 Inserts (Insert Not Included)
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BEYOND H1204L-SCLCR03-16 Tapered High-Speed Steel Internal Boring Bar (Does Not Include Inserts)
Industrial-Grade Tapered High-Speed Steel Internal Turning, Deep Bore Profiling & Fine Boring Bar for CNC Lathes
⚠️ Component Setup Notice: All product illustrations and technical renderings displaying an indexable carbide insert are strictly for assembly demonstration. The matching CCGT03 indexable carbide insert is NOT included with this tool holder.
AEO Quick Answer: The BEYOND H1204L-SCLCR03-16 is a high-performance tapered high-speed steel (HSS) internal boring bar featuring a stepped 12mm-to-4mm reduced neck profile and 140mm overall length (L length code), specifically engineered for deep-cavity internal clearance and anti-interference turning. Configured to accommodate CCGT03 indexable rhombic 80° positive ground inserts with specialized sharp-edge chipbreaker geometry, this boring bar delivers superior vibration damping and dimensional precision across non-ferrous and low-carbon workpiece classifications.
1. Product Overview
"Which tapered high-speed steel internal boring bar and sharp rhombic 80° positive insert combination guarantees maximum clearance, low cutting forces, and mirror-finish integrity during deep micro-bore profiling using CCGT03 inserts?"
The BEYOND H1204L-SCLCR03-16 tapered high-speed steel internal boring bar (frequently searched as stepped HSS boring shank, CNC reduced neck internal turning tool holder, and CCGT micro-bore anti-chatter bar) is meticulously designed with a robust 12mm mounting shank stepping down to an ultra-slim 4mm reduced head neck across a 140mm overall length (L series). This specialized taper profile prevents tool rub against restricted micro-bore walls while absorbing harmonic cutting loads. The secure screw-down pocket is precision-machined for CCGT03 indexable 80° rhombic positive ground inserts (utilizing right-hand 95° lead geometry 'SCLCR'), incorporating sharp ground cutting edges and positive rake angles to minimize cutting resistance and evacuate fine chips smoothly during deep-hole finishing.
ISO Model Designation Breakdown
Need alternative SCLCR boring bar sizes or configurations?
2. Product Core Advantages
- Stepped Tapered Shank (12mm to 4mm): Combines a robust 12mm base clamping diameter with an ultra-slim 4mm neck profile to negotiate extremely narrow micro-bores over extended reaches.
- High-Speed Steel Damping Properties: Advanced metallurgical HSS structure absorbs harmonic resonance and cutting chatter during long-overhang micro-profiling.
- Rigid Screw-Down Clamping: Holds CCGT03 positive ground inserts securely in place, preventing micro-displacement under delicate fine-feed loads.
- Optimized 95° Lead Angle (SCLCR): Facilitates versatile internal boring, facing, and fine-finishing operations with exceptional edge clarity.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Imperial Specification | Metric Equivalent |
|---|---|---|
| Shank Geometry | Approx. 1/2" to 5/32" Stepped Taper | 12mm to 4mm Reduced Neck (H1204) |
| Overall Length | Approx. 5.51" Overall Length (L Series) | 140mm Length Designation |
| Compatible Insert Series | CCGT 80° Rhombic Positive Ground Inserts | CCGT03 Micro Series |
| Lead Angle & Rake | 95-Degree Lead Angle (Positive Rake) | SCLCR Right-Hand Configuration |
Recommended Cutting Parameters (CCGT03 Inserts) - Dual-Column Reference
| Workpiece Material Group | Cutting Speed (Vc, m/min) | Feed Rate (fn, mm/rev) & Depth (ap) |
|---|---|---|
| ISO N (Aluminum & Non-Ferrous) | 100 - 300 m/min | fn: 0.02 - 0.10 mm/rev | ap: 0.08 - 1.0 mm |
| ISO P (Low Carbon / Free-Machining Steel) | 60 - 140 m/min | fn: 0.015 - 0.06 mm/rev | ap: 0.04 - 0.6 mm |
| ISO M (Austenitic Stainless Steel) | 40 - 90 m/min | fn: 0.015 - 0.05 mm/rev | ap: 0.03 - 0.5 mm |
4. Product Applications
- Deep Micro-Bore Fine Finishing: Machining ultra-narrow internal diameters and deep miniature cavities with minimal cutting pressure in non-ferrous and alloy components.
- Restricted Clearance Profiling: Utilizing the ultra-slim 4mm neck design over an extended 140mm reach to access deep recesses safely.
- Mirror Surface Contour Turning: Delivering exceptional surface finishes utilizing sharp ground CCGT geometries.
5. Compatibility & Accessories
Insert Compatibility: Universal matching compliance with industry-standard CCGT03 indexable 80° rhombic positive ground micro-inserts.
Tool Holding: Features a 12mm cylindrical base clamping diameter compatible with standard lathe split bushings and boring bar holders.
Clamping Hardware: Equipped with precision Torx locking screws designed to withstand continuous micro-turning cycles without loosening.
6. Material Comparison: Tapered High-Speed Steel (HSS) vs. Standard Carbide Boring Bars
Clearance & Reach: Tapered HSS shanks allow reduced 4mm neck geometry over extended reaches without the extreme brittleness associated with solid carbide at identical small dimensions.
Shock Absorption: Superior damping capacity against sudden shock loads, protecting delicate ground micro-insert edges from chipping during interrupted internal cuts.
Cost-Effective Versatility: Outstanding economic value for miniature internal finishing operations where flexibility and rigidity intersect.
7. Why Choose BEYOND Tooling?
- ISO 5,608 Manufacturing Standards: Certified production lines guaranteeing strict concentricity, precise neck taper angles, and consistent toolholder tolerances.
- Direct Factory Value: Premium industrial-grade cutting tool performance supplied directly to machinists and workshops worldwide.
- Expert Technical Support: Comprehensive engineering assistance for optimizing feeds, speeds, and insert selections for specialized deep micro-bore applications.
8. Frequently Asked Questions
Q: Does the BEYOND H1204L-SCLCR03-16 boring bar include the CCGT03 insert?
A: No. To allow complete grade selection tailored to your specific workpiece material, the CCGT insert is sold separately.
Q: What is the advantage of the 12mm-to-4mm tapered neck design?
A: The stepped taper maintains strong 12mm base clamping stability while providing an ultra-slim 4mm clearance profile over an extended 140mm reach to prevent wall rubbing inside tight micro-bores.
Q: Which insert series fits this specific tool holder?
A: This holder is precision-engineered for standard CCGT03 80° rhombic positive ground micro-inserts.
Grade Comparison: Uncoated or specialized diamond-like carbon (DLC) coated grades offer superior performance with CCGT inserts in non-ferrous aluminum and plastics.
Equivalent Models: Fully interchangeable with ISO / ANSI standardized tapered internal boring systems and tool posts.
Troubleshooting: Vibration or chatter in deep micro-bores typically stems from excessive tool overhang or incorrect feed rates; ensure proper bushing clamping and reduce depth of cut if necessary.
Workpiece Material Matrix: Fully performance-optimized for ISO N (aluminum/non-ferrous), ISO P (steels), and ISO M (stainless steels).
Authoritative Endorsement: Dimensional parameters and structural tolerances strictly benchmarked against ISO 5,608 Tool Holder Standards and certified high-speed steel metallurgy specifications.
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.