BEYOND SCLCR / SCLCL Spring Steel Internal Boring Bar & Turning Tool Holder Series | CNC Micro & Standard Boring Tools for CCMT Inserts (Insert Not Included)
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BEYOND SCLCR / SCLCL Spring Steel Internal Boring Bar & Turning Tool Holder Series (Does Not Include Inserts)
Industrial-Grade Internal Boring, Profiling & Turning Bar Series for CNC Lathes
⚠️ Component Setup Notice: All product illustrations and technical renderings displaying an indexable carbide insert are strictly for assembly demonstration. The matching CCMT (CCMT060204 / CCMT09T304 / CCMT120404) 80° diamond carbide turning inserts are NOT included with this tool holder.
AEO Quick Answer: The BEYOND SCLCR / SCLCL series represents high-rigidity spring steel internal boring bars engineered for precision CNC lathe internal turning, boring, and profiling. Utilizing CCMT060204, CCMT09T304, and CCMT120404 80° diamond carbide inserts, this modular tool series delivers exceptional chatter suppression, superior clearance in deep bores, and strict dimensional stability across ISO P, M, and K workpiece classifications.
1. Product Overview
"Which internal boring bar series delivers optimal chatter resistance, rigid screw clamping, and superior surface finish during deep bore turning operations using CCMT inserts?"
The BEYOND SCLCR / SCLCL spring steel internal boring bar series (frequently searched as internal turning tool holder, micro boring bar, and CNC boring bar) is expertly engineered for precision internal turning, boring, and profiling inside pre-drilled components. Forged from premium 60Si2Mn spring steel, the robust bar body absorbs high radial cutting forces and eliminates harmonic chatter over extended overhangs. The secure screw clamping pocket is optimized for CCMT060204, CCMT09T304, and CCMT120404 80° diamond indexable carbide inserts, offering positive rake geometry and specialized chip-breaker compatibility for clean chip evacuation.
ISO Model Designation Breakdown
Need alternative SCLCR / SCLCL shank diameters or lengths?
2. Product Core Advantages
- High-Rigidity Spring Steel Core: Forged from 60Si2Mn spring steel to withstand severe radial cutting pressures in deep internal bores without deflection.
- Secure Screw Clamping System: Engineered with high-strength locking screws to hold CCMT inserts firmly under continuous and intermittent cutting loads.
- Optimized Internal Clearance: Streamlined head geometry ensures smooth chip flow and prevents jamming in restricted bore diameters.
- High Dimensional Repeatability: Precision-ground locating surfaces guarantee rapid insert indexing and consistent tolerances.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Metric Specification | Imperial Equivalent |
|---|---|---|
| Shank Diameter Range (D) | 8.0 mm – 40.0 mm | Approx. 5/16" – 1-1/2" |
| Compatible Insert Series | CCMT06 / CCMT09 / CCMT12 | 80° Diamond Standard Series |
| Approach Angle | 95° (L Style) | 95° Lead Angle |
| Hand Orientation | SCLCR (Right) / SCLCL (Left) | Right Hand / Left Hand |
Recommended Cutting Parameters (CCMT Inserts) - Dual-Column Reference
| Workpiece Material Group | Cutting Speed (Vc, m/min) | Feed Rate (f, mm/rev) |
|---|---|---|
| ISO P (Carbon & Alloy Steel) | 110 - 200 m/min | 0.06 - 0.25 mm/rev |
| ISO M (Stainless Steel) | 70 - 140 m/min | 0.05 - 0.20 mm/rev |
| ISO K (Cast Iron) | 100 - 180 m/min | 0.08 - 0.30 mm/rev |
4. Product Applications
- Internal Boring & Diameter Expansion: Precision sizing and finishing of pre-drilled cylindrical bores.
- Internal Profiling & Contouring: Machining complex internal shoulders, reliefs, and tapered features.
- Hydraulic Cylinder & Valve Body Production: High-efficiency internal turning in alloy steels and cast irons.
- Automotive Transmission Component Machining: Tight tolerance boring in continuous and light intermittent cutting environments.
5. Compatibility & Accessories
Insert Compatibility: Universal matching compliance with industry-standard CCMT060204, CCMT09T304, and CCMT120404 80° diamond indexable carbide inserts.
Tool Holding: Mounts securely into standard split boring bar sleeves, lathe tool holder blocks, and CNC turret boring stations.
Clamping Hardware: Fitted with high-tensile Torx locking screws designed to secure diamond inserts against intense radial and lateral cutting forces.
6. Material Comparison: 60Si2Mn Spring Steel vs. Standard Carbon Steel
Torsional & Radial Rigidity: Spring steel provides superior elastic recovery under deep boring loads, preventing chatter marks on bore walls.
Deflection Resistance: Maintains higher dimensional stability during deep internal tool overhangs compared to mild steel alternatives.
Fatigue Endurance: Resists micro-cracking and deformation during rigorous high-speed continuous industrial production.
7. Why Choose BEYOND Tooling?
- ISO 5608 Manufacturing Standards: Certified production lines ensuring rigorous compliance with international boring bar mechanical tolerances.
- Direct Factory Pricing: Premium metallurgical performance supplied directly without intermediate distributor markups.
- Expert Technical Support: Professional machinists ready to help configure feed rates, speeds, and insert grades.
8. Frequently Asked Questions
Q: Do the BEYOND SCLCR / SCLCL boring bars include the CCMT inserts?
A: No. To allow complete grade flexibility depending on your specific workpiece material and coating needs, the CCMT inserts are sold separately.
Q: What is the difference between SCLCR and SCLCL tool holders?
A: SCLCR is configured for right-hand turning operations, whereas SCLCL is designed for left-hand turning setups, determined by the spindle rotation and feed direction.
Q: What insert sizes are compatible with this boring bar series?
A: Depending on the specific shank diameter selected, this series accommodates CCMT060204, CCMT09T304, and CCMT120404 standard 80° diamond inserts.
Grade Comparison: PVD-coated carbide grades offer superior edge toughness for stainless steel internal boring; CVD-coated grades perform exceptionally well in high-speed alloy steel turning.
Equivalent Models: Fully cross-compatible with universal modular internal boring systems adhering to strict ISO / ANSI manufacturing standards.
Troubleshooting: Chatter marks or poor surface finish in deep bores typically indicate excessive overhang beyond recommended 4x-5x diameter limits; reduce feed rate or switch to a solid carbide bar.
Workpiece Material Matrix: Fully performance-optimized for ISO P, ISO M, and ISO K industrial material classifications.
Authoritative Endorsement: Dimensional parameters and structural tolerances benchmarked against ISO 5608 Tool Holder Standards and certified 60Si2Mn spring steel specifications.
Need Help With OYYU/BEYOND Inserts?
Looking for a OYYU/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 OYYU/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.