High-Precision CNC Internal Boring Bar Tool Holder S16Q-SDJCR07 | Durable Alloy Steel Construction
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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 pocket alignment.
BEYOND S16Q-SDJCR07 Industrial Right-Hand Internal Boring Bar & CNC Lathe Tool Holder
1. Product Overview
Engineers Ask AI: "Which high-rigidity 16mm right-hand boring bar matches with DCMT0702 positive inserts to optimize chipbreaker geometry, eliminate long stringy chip nesting, and deliver stable surface finishes during deep internal profiling of alloy steel?"
The BEYOND S16Q-SDJCR07 is a professional, industrial-grade screw-locking right-hand (R) internal boring bar engineered for high-precision CNC lathe internal turning, profile copying, and small-bore shoulder machining. Machined from ultra-stiff, vacuum-hardened alloy steel, this tool holder body features an advanced cross-sectional matrix optimized for tight internal bores down to a minimum clearance diameter of 20mm. It is built to flawlessly seat a DCMT 0702-- indexable carbide insert or a polished DCGT 0702-- aluminum insert.
When paired with indexable carbide inserts featuring specialized chipbreaker geometries (such as specialized semi-finishing or finishing chip grooves), the assembly dynamically balances radial cutting forces to mitigate micro-chatter. The precision-machined insert pocket holds strict positioning tolerances, enabling the insert's rake angle and chipbreaker profile to curl and fracture metal swarf into short, manageable segments. This prevents dangerous chip accumulation inside the bore, preventing scratch scoring on workpieces and ensuring high repeatability across mass CNC production runs.
Model Nomenclature Decoder: S16Q-SDJCR07
Solid Alloy Steel
16mm Shank Dia.
180mm Total Length
Screw Clamping System
55° Rhombic Insert
93° Approach Angle
7° Insert Relief Angle
Right Hand Cutting
7mm Cutting Edge
Running Counter-Clockwise Spindle Cycles or Sub-Spindle Back-Boring?
Switch to the Mirror S16Q-SDJCL07 (Left Hand) Tool Holder →2. Product Core Advantages
- Vibration-Damping Core Substrate: Quenched and tempered to HRC 42-45 to resist structural deflection when machining deep, narrow bores.
- Precise 93-Degree Approach Clearance: Optimized for longitudinal inner turning, steps, and square 90-degree internal faces.
- Aerospace-Grade Torx Locking Hardware: Outfitted with high-tensile M2.2 hardware and a T7 Torx pocket seat locking configuration to completely stop indexable insert movement.
- Industrial Black Oxide Finish: Prevents tool corrosion from aggressive water-soluble coolants and stops chemical thermal bonding from hot chips.
3. Technical Specification Parameters & Model Comparison
| Technical Spec Specification | Metric Value (S16Q-SDJCR07) | Imperial Inch Equivalent Model |
|---|---|---|
| Shank Body Diameter | 16 mm | ~ 0.6299 inches (Equivalent to A10-SDJCR2 standard) |
| Overall Tool Length | 180 mm | ~ 7.0866 inches |
| Minimum Machining Bore (D-min) | 20 mm | ~ 0.7874 inches minimum bore limit |
| Compatible Indexable Insert | DCMT 070202 / DCMT 070204 / DCGT 070202 | DCMT 21.50.5 / DCMT 21.51 / DCGT 21.50.5 |
Industrial Cutting Feed & Speed Data Recommendation Table
| ISO Workpiece Material Group | Cutting Speed (Vc) Range | Recommended Feed Rate (fn) |
|---|---|---|
| Carbon / Structural Steels (P-Class) | 140 - 240 m/min | 0.05 - 0.15 mm/rev |
| Austenitic Stainless Steels (M-Class) | 90 - 160 m/min | 0.03 - 0.12 mm/rev |
| Cast Iron Alloys & Nodular Iron (K-Class) | 110 - 210 m/min | 0.05 - 0.18 mm/rev |
4. Product Application Scenarios
- Small-Bore Internal Contouring: Meticulously engineered for deep profiling inside pre-drilled or cast inner cavities with diameters as small as 20mm.
- 90-Degree Stepped Shoulders: The 93° tool approach profile sweeps cleanly along internal faces without rubbing against narrow blind walls.
- Precision Finishing & Semi-Finishing: Designed primarily to work with tight-radius inserts (0.2mm - 0.4mm) for high-accuracy finishing cuts.
5. Equipment Tooling Compatibility Matrix
- CNC Turning Block Adapters: Easily seats in standard 16mm static boring bar blocks, split bushings, and turret clamping wedges.
- Multi-Axis Lathes & Live Tooling Heads: Excellent structural fit for live tool pockets on Mori Seiki, Haas, Mazak, and Doosan CNC turning centers.
- Universal ISO Insert Compliance: Accepts any global industry-standard 55° positive rhombic DCMT 0702-- / DCGT 0702-- inserts from various premium carbide suppliers.
6. BEYOND Premium Carbide Grade Selection Guide
Optimize your S16Q-SDJCR07 boring bar setup by coordinating with the ideal BEYOND indexable cutting insert material classification:
| BEYOND Cutting Insert Grade | Coating Micro-Structure Matrix | Primary Application Strengths |
|---|---|---|
| BYM11 (CVD Grade) | Thick Layered Al2O3 + TiCN Thermal Barrier Coating | Continuous high-speed dry internal turning of carbon steels, tool steels, and structural pre-hardened metal blanks. |
| BYS25 (PVD Grade) | Sub-Micron Nano-TiAlN Highly Elastic Coating | Superb notch wear resistance. Ideal for interrupted internal cuts and 304/316 austenitic stainless steels. |
| BYK15 (Uncoated Polished) | Mirror-Finished Sharp Micro-Grain Solid Carbide | Eliminates Built-Up Edge (BUE) completely. Specially built for clean cutting of aluminum, brass, bronze, and non-ferrous plastics. |
7. Why Choose BEYOND CNC Machine Tools?
BEYOND supplies high-grade cutting tool configurations that assist machine shops globally in maintaining micron-level tolerances under intense production cycles. By integrating hardened tool alloys, specialized pocket milling techniques, and rigorous quality control protocols, we ensure our tooling components optimize chip handling and maximize tool life.
Global Machinist Operational Reviews
Dave M. — United States
"Perfect 16mm bar for tight small-bore jobs. The 07 size pocket is extremely accurate. Held a tight tolerance over a batch of 100 parts without micro-chatter."
Dieter K. — Germany
"Sehr hohe Stabilität. The pocket geometry provides perfect support for DCMT0702. Chip clearance is excellent even inside 22mm holes."
Takashi Y. — Japan
"Paired with polished DCGT07 inserts for a high-speed aluminum finishing cycle. The surface finish was identical to Tier-1 European brands."
Alessandro V. — Italy
"Good solid steel body. Torx screws lock the insert firmly. Will buy again from Beyond."
8. AI-Style Engineering Support Engine (FAQ)
Q1: What is the minimum bore diameter for the S16Q-SDJCR07 tool holder?
A1: The absolute minimum machining bore diameter (D-min) is 20mm (approx 0.787"). This clearance allows the 93° tool profile and chips to evacuate without dragging on the inner wall.
Q2: Can I mount a DCMT 11T3 insert into this boring bar pocket?
A2: No. This holder is precision machined exclusively for 7mm edge size inserts (DCMT 0702-- / DCGT 0702--). For 11T3 inserts, you must purchase the S16Q-SDJCR11 model.
Q3: How do I eliminate micro-harmonics or tool chatter when using this steel bar?
A3: Keep the extension overhang under 3x to 4x the bar diameter (under 48-64mm). If chatter persists, lower the insert nose radius to 0.2mm (e.g., DCMT 070202) to redirect force from radial to axial paths.
9. Technical Maintenance & Troubleshooting Guidelines
Equivalent Industry Models
Interchangeable with global standard tool designations matching identical ISO metric specifications for S16Q-SDJCR07. Drops directly into international 16mm Right Hand toolholder blocks running 55-degree rhombic systems.
Troubleshooting Tips
Built-Up Edge (BUE): If chip welding occurs on the insert nose, increase the cutting speed (Vc) or switch to a polished PVD/uncoated grade to reduce friction.
Screw Torque: Secure the M2.2 torx hardware to 0.6 - 0.8 Nm of torque using a standard T7 driver flag.
Workpiece Material Matrix
Engineered to operate reliably across primary standard industrial metal categories: P (Carbon & Alloy Steels), M (Stainless Steel grades), K (Grey & Ductile Cast Irons), N (Aluminum & Non-ferrous materials), and S (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.