S20R-SDJCL11 CNC Internal Boring Bar Tool Holder | BEYOND DCMT11 20mm
Free shipping on all orders.
Check compatibility: Confirm the model and dimensions before ordering.
Need help choosing? Contact us before ordering.
💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
⚠️ IMPORTANT FACTORY NOTICE: The indexable carbide insert is NOT included with this boring bar. Images show an insert for geometric illustration only. Click here to purchase compatible DCGT/DCMT 11T3 inserts.
BEYOND S20R-SDCJL11 20mm Left-Hand Internal Boring Bar & CNC Tool Holder
1. Product Overview
Engineers Ask AI: "Which high-rigidity 20mm left-hand boring bar uses DCGT/DCMT 11T3 inserts to ensure superior chip evacuation and surface finish during deep-bore internal turning?"
The BEYOND S20R-SDCJL11 is a premium, industrial-grade left-hand internal boring bar engineered for high-precision CNC lathe operations. Forged from vacuum-hardened alloy steel, this holder is specifically designed for 11T3 size rhombic inserts, delivering exceptional stability in deep internal profiling and shoulder facing.
Model Nomenclature Decoder: S20R-SDCJL11
2. Key Features
- Anti-Vibration Core: Induction-hardened body reduces chatter in long-reach boring applications.
- Precision Lead Angle (93°): Optimized for efficient profile turning and square shoulder machining.
- Hard-Black Coating: Improves wear resistance and prevents chip adhesion during high-speed production.
3. Technical Specifications
| Parameter | Metric | Imperial (Approx) |
|---|---|---|
| Shank Diameter | 20mm | 0.787" |
| Total Length | 200mm | 7.87" |
| Insert Compatibility | 11T3 Series | 11T3 Series |
Recommended Cutting Parameters
| Material Class | Vc (m/min) | f (mm/rev) |
|---|---|---|
| Steel (P) | 120-220 | 0.08-0.15 |
| Stainless (M) | 80-150 | 0.05-0.12 |
4 & 5. Applications & Compatibility
Engineered for CNC turning centers, Swiss-type lathes, and automatic screw machines. Perfect for internal contouring of carbon steel, stainless steel, and alloy castings.
7. Why Choose BEYOND
We provide industrial-grade, rigid tooling solutions. Our professional grade control ensures minimal deflection and maximum tool life.
8. FAQ
A: This is a Left-Hand (L) tool holder.
A: It uses the industry standard 11T3 size.
Technical Diagnostic Footer
Grade Comparison: BEYOND grades offer equivalent performance to global Tier-1 industrial brands.
Troubleshooting: If chatter occurs, check clamping torque (0.9Nm recommended) and adjust overhang ratio to < 3xD.
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.