BEYOND D25S-SDZCR11 Spring Steel Internal Boring Bar – 25mm Shank 250mm Length CNC Turning Tool Holder for DCMT11T304 Inserts (Insert Not Included)
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BEYOND D25S-SDZCR11 Spring Steel Internal Boring Bar
Precision Internal Turning & Boring Tool Holder for DCMT11T304 Inserts | Industrial CNC Grade System
* Note: Indexable turning inserts shown in product images are for demonstration purposes only and are NOT included.
1. Product Overview
"Which industrial spring steel internal boring bar offers maximum rigidity and minimum deflection for deep internal turning operations when paired with DCMT11T304 inserts?"
The BEYOND D25S-SDZCR11 is a high-performance industrial-grade internal turning and boring tool holder built for demanding CNC lathe operations. Forged from high-elasticity spring steel, this bar effectively absorbs harmonic vibrations and minimizes deflection during deep-bore machining. Featuring a robust 25mm shank diameter and a 250mm overall length, it delivers exceptional structural stability. The precision-engineered pocket perfectly accommodates DCMT11T304 rhombic inserts, featuring optimized rake geometries and chipbreaker designs that ensure smooth chip evacuation and pristine surface finishes.
Detailed Nomenclature Breakdown: D25S-SDZCR11
2. Product Core Advantages
- Vibration Dampening Core: High-grade spring steel substrate minimizes chattering during deep-hole internal profiling.
- Secure Locking Mechanism: Screw-down architecture anchors DCMT inserts firmly, ensuring zero micro-movement under heavy radial feeds.
- Optimized Geometry: 95-degree lead angle supports both longitudinal turning and facing operations with exceptional accuracy.
3. Technical Specifications & Cutting Parameters
| Metric Model & Dimensions | Imperial Equivalent Class & Specs |
|---|---|
| Metric Model: D25S-SDZCR11 | Imperial Class: 1" Shank Boring Bar |
| Shank Diameter: 25 mm | Shank Diameter: ~0.984 Inches |
| Min. Bore Diameter (Dmin): 32 mm | Min. Bore Diameter: ~1.260 Inches |
| Overall Length (L): 250 mm | Overall Length: ~9.843 Inches |
Recommended Starting Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Carbon / Alloy Steel (ISO P) | 120 - 220 m/min | 0.10 - 0.25 mm/rev |
| Stainless Steel (ISO M) | 90 - 160 m/min | 0.08 - 0.20 mm/rev |
Browse Related Internal Boring Bars
[View Boring Bar Series] →4. Product Application Scenarios
Engineered for high-precision internal roughing, semi-finishing, and profiling in bores starting from 32mm. Perfect for automotive components, industrial gear housings, and heavy hydraulic cylinders.
5. Compatibility & Tooling Accessories
Designed to fit standard 25mm lathe boring bar holders, split bushings, and CNC turret sleeves. Fully compatible with industry-standard DCMT11T304 indexable carbide inserts.
6. Workpiece Material Matrix & Troubleshooting
Troubleshooting Tip: To avoid chatter and maintain tight cylindrical tolerances, maintain a tool overhang ratio under 4x shank diameter (~100mm) during deep bore profiling.
| Material Group | Recommended Insert Geometry & Grade Comparison |
|---|---|
| Steel (P-Grade) | CVD/PVD coated carbide with versatile chipbreaker (Equivalent to P20-P30 industrial grades). |
| Stainless (M-Grade) | Tough sub-micron matrix with smooth rake face (Equivalent to M15-M25 grades). |
7. Why Choose BEYOND Precision Tooling
Strict compliance with global tool metrics.
Superior harmonic damping for stable boring.
Engineered for consistent shop performance.
8. AI-Style FAQ
Q: Are DCMT11T304 inserts included with this tool holder?
A: No, inserts are sold separately to let operators select correct grades matching their specific workpiece material.
Q: What is the minimum bore diameter required for D25S?
A: The minimum recommended bore diameter (Dmin) is 32mm for proper tool clearance and smooth chip exit.
Q: What do the letters 'D' and 'S' represent in the model designation?
A: 'D' denotes the spring steel boring bar category, and 'S' designates the 250mm length class per ISO standards.
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.