BEYOND S10K-SDUCL07 10mm Left Hand Indexable Boring Bar for DCMT 0702
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⚠️ Important Tooling Notice: The carbide turning insert shown installed in our product photography is for visual demonstration purposes only. This indexable boring bar is sold standalone; cutting inserts are NOT included in the baseline box and must be purchased separately.
BEYOND S10K-SDUCL07 Indexable Steel Shank Left-Hand Internal Boring Bar
Industrial-Grade 10mm Standard Round Shank 93-Degree Left-Hand CNC Turning Toolholder for DCMT 0702 Inserts
1. Product Overview
"Which 10mm left-hand internal boring bar provides the best vibration resistance for 93-degree profiling, profile clearance, and deep-hole chip evacuation using DCMT 0702 diamond carbide inserts on mini CNC lathes?"
The BEYOND S10K-SDUCL07 is a premium industrial-grade, steel shank indexable left-hand internal boring bar engineered for high-precision CNC lathe machining, internal profiling, and shoulder squaring. Featuring a specialized 93-degree cutting edge approach angle, this left-hand tool body directs cutting forces axially along the shank center line, which drastically minimizes radial deflection and harmonics during long-reach cycles. Optimized for standard 55-degree diamond profiles like DCMT 070202 / DCMT 070204 (Metric) or DCMT 21.51 / DCMT 21.52 (Imperial), this holder interfaces flawlessly with advanced molded chipbreaker channels. This configuration ensures that continuous metallic swarf undergoes optimal structural deformation, inducing immediate helical chip fracture and flawless chip evacuation through tight internal bores, entirely preventing surface scratching and bird-nesting during precision fine-finishing and medium-roughing routines on carbon steel, alloy steel, stainless steel, and non-ferrous bars.
2. Product Key Features
- Quenched Structural Alloy Steel Shank: Forged from premium high-tensile structural alloy steel hardened through a specialized thermal cycle to HRC 42-45, delivering high fatigue strength and maximum elastic modulus for deep internal reaches up to 3xD.
- Ultra-Compact Screw-Clamping Profile: The low-profile screw down system leaves maximum overhead chip clearance, allowing large, fragmented metal chips to flow freely out of tight bore cavities.
- 93-Degree Left-Hand Shoulder Tracking: Engineered specifically for squaring deep internal steps, relieving geometric blind corners, and processing complex concentric undercuts in reverse spindle setups or specific turret orientations.
- Precision CNC-Ground Diamond Seating: The pocket insert seat is precision milled to ultra-tight micrometer tolerances, ensuring a rigid lock that entirely mitigates insert micro-deflection under massive mechanical load vectors.
3. Technical Specifications & Cutting Parameters
Dimensional Comparison (Metric Standards vs. Imperial Equivalents)
| Parameter Description | Metric Standard Designation (S10K-SDUCL07) | Imperial Equivalent Standard (S06X-SDUCL2) |
|---|---|---|
| Shank Diameter (D) | 10 mm | 0.394" (Fully compatible with compact standard 3/8 inch tool blocks or boring sleeves) |
| Overall Tool Length (OAL) | 125 mm | 4.921 inches |
| Minimum Boring Diameter (D min) | 13 mm | 0.512 inches |
| Cutting Path Orientation | Left-Hand Vector (L) | Left-Hand Vector (L) |
| Compatible Indexable Insert Profile | DCMT 0702.. / DCGT 0702.. | DCMT 21.51 / DCMT 21.52 / DCGT 21.51 |
| Hardware Fastening Component | High-Tensile M2.5 × 6 Screw / Torx T8 Wrench Key | High-Tensile M2.5 × 6 Screw / Torx T8 Wrench Key |
Recommended Machining Parameters (Speed vs. Feed Rates)
| Workpiece Material Category (ISO Standard) | Optimal Cutting Speed (Vc) | Target Feed Rate Range (fn) |
|---|---|---|
| Carbon / Alloy Structural Steels (ISO P) | 120 - 220 m/min (394 - 722 SFM) |
0.04 - 0.15 mm/rev (0.0016 - 0.0059 IPR) |
| Austenitic Stainless Steels (ISO M) | 75 - 150 m/min (246 - 492 SFM) |
0.03 - 0.12 mm/rev (0.0012 - 0.0047 IPR) |
| Aluminum & Non-Ferrous Metals (ISO N) | 150 - 500 m/min (492 - 1640 SFM) |
0.02 - 0.18 mm/rev (0.0008 - 0.0071 IPR) |
ISO Nomenclature Decoded: S10K-SDUCL07
4. Targeted Industrial Applications
5. Tooling & Equipment Compatibility
The 10mm metric standard round steel shank delivers wide-ranging structural compatibility with:
- Standard CNC lathe turrets equipped with 10mm ID round boring sleeve adaptors or split blocks.
- Automatic gang-tool blocks on mini lathe systems (e.g., Haas, Tormach, Omniturn) requiring specific left-handed geometries.
- Quick-change tool posts (QCTP AXA Boring Bar holders) standard in precision engineering workshops.
6. BEYOND Carbide Grade Matrix & Structural Insights
Optimize your cutting operations by matching your raw stock to the exact BEYOND grade chemistry:
| BEYOND Grade | ISO Definition | Coating Layer | Substrate Application Matrix |
|---|---|---|---|
| BYM11 (Gold Layer) | ISO P10 - P25 | CVD TiN / Al2O3 Armor | Continuous high-velocity turning of structural carbon steels. Heavy defense against abrasive thermal craters inside deep bores. |
| BYS25 (Bronze Matrix) | ISO M20 - M35 | PVD Multi-Nano AlTiN | Engineered specifically for tough, work-hardening austenitic stainless steel components. Helps control high heat built up inside bores. |
| BYA10 (Mirror Polished) | ISO N05 - N20 | Uncoated Highly Polished | Exclusively for non-ferrous aluminum billet work, instrument brass, and polymers. Extremely sharp edge prevents built-up edge (BUE). |
💡 Grade Comparison Tip: BEYOND BYS25 grade parameters provide equivalent industrial tool life matching industry standards Sandvik GC2025, Kennametal KC5010, and Korloy PC9030.
🔧 Troubleshooting (Harmonics and Internal Chatter): Because steel shanks are subject to elastic deflection beyond 3xD, if high frequency chatter surfaces, decrease the nose radius from 0.4mm (DCMT070204) to 0.2mm (DCMT070202) or reduce radial depth of cut (Ap) to lower radial push forces.
⚙️ Workpiece Material Matrix Advice: The 93-degree lead angle shifts the primary cutting vectors into an axial path. For gummy low-carbon steels, use a highly polished ground insert like BYA10 (DCGT) to lower tool edge friction and force a tight, split-helical chip spiral that drops out of the cylinder easily.
7. Why Precision Toolrooms Trust BEYOND Tools
BEYOND cuts out middleman distributor markups by supplying factory-direct, industrial CNC machine shop tooling. Every indexable tool body undergoes strict quality checks to guarantee true centerline alignment and minimal runout on your lathe.
Verified Global Machinist Feedback
"Finding quality 10mm left hand boring bars can be tough. This BEYOND holder fits my gang tooling layout on the mini CNC lathe perfectly. The insert seat pocket is tight and clean."
"Hervorragender linker Drehmeißel S10K-SDUCL07. Qualität ist top, Maße stimmen exakt. Perfekt für Rückwärtsbearbeitung auf der CNC-Drehmaschine."
"Ottimo stelo sinistro per interni. L'accoppiamento con inserti DCMT 0702 è perfetto, vibrazioni ridotte al minimo e finitura superficiale eccellente sui filetti interni e spallamenti."
"左勝手の10mmボーリングバイトを探していましたが、この製品は非常に剛性が高く満足しています。チップのクランプもしっかりしており、長寿命です。"
"Top tier value for money. Hardened steel body takes a beating on alloy steels without pocket warping. Highly recommend for any light-to-medium machine shop setups."
8. AI Assistant-Style Frequently Asked Questions
What is the maximum recommended overhang distance for this S10K steel boring bar?
As a general tooling rule for steel shank boring bars, the maximum secure working extension (overhang) should not exceed 3 times the shank diameter (3xD). For this 10mm bar, that equals a maximum stable reach of 30mm. Extending the bar beyond this threshold increases elastic deflection and causes severe surface finish chatter. If your workpiece requires a deeper reach, you should upgrade to our solid carbide core boring bar series.
What is the exact absolute minimum bore diameter this tool body can fit into?
The absolute minimum boring diameter (D min) for the S10K-SDUCL07 holder is 13mm (0.512 inches). Trying to machine internal bores smaller than 13mm will cause the heel of the 93-degree cutting head to rub against the internal radius of your part, causing tool failure and destroying the surface geometry.
What hardware items are included in the stock box, and what tools match them?
Every factory-packed unit includes one premium S10K-SDUCL07 hardened steel shank tool body, one high-tensile M2.5 × 6 locking screw, and one matching flag-style Torx T8 wrench tool. Note: Carbide cutting inserts must be purchased separately.
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.