BEYOND S25S-SSKCR09 Boring Bar | 25mm CNC Lathe Right Hand Internal Turning Tool Holder for SCMT 09T3 Inserts
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BEYOND S25S-SSKCR09 Boring Bar – 25mm Right Hand Steel Screw Locking CNC Lathe Internal Turning Tool Holder
1. Product Overview
"Which right-hand 25mm boring bar ensures optimum chip evacuation and rigid structural stability for everyday internal turning with SCMT 09T3 inserts?"
The BEYOND S25S-SSKCR09 represents the definitive industrial standard for a Solid Alloy Steel Right Hand Internal Turning Boring Bar, precision-developed to execute highly consistent internal profiling, boring, and face cycles on modern CNC lathes. Engineered with an optimal 25mm shank diameter and an extended 250mm overall length, this tool holder delivers an outstanding balance of structural mass and bore accessibility. It acts as a rugged barrier against harmonic micro-chatter during deep internal passes, ensuring tighter dimensional repeatability across continuous production shifts.
This premium tool holder is meticulously pocket-milled to house standard SCMT 09T3 / SCGT 09T3 square indexable carbide inserts. Incorporating a 75-degree side cutting approach angle, it effectively redirects high radial push deflection into stable axial forces running straight down the longitudinal core of the 25mm alloy steel body. When paired with high-performance positive-ground chipbreaker geometries, the cutting edge splits tough workpiece fibers seamlessly. The specialized orientation of the insert pocket forces instant chip breaking, snapping continuous metal ribbons into compact, light swarf spirals that lift out smoothly from a minimum bore clearance of 32mm, protecting the machined surface from scratching or bird-nesting traps.
2. Product Core Features
- Standard Right-Hand (RH) Precision: Fully optimized configuration for conventional forward spindle directions and standard turret turning paths.
- Vacuum-Hardened Alloy Steel Body: Thermal-treated matrix increases fatigue limits and yields superior dampening characteristics under variable chip thicknesses.
- 75° Taper-Preventing Approach Geometry: Converts radial push back into structural compression load, maintaining extreme boring straightness over long internal bores.
- Low-Profile Torx Screw Clamping System: Utilizes a highly flush M3.5 screw locking mechanism that completely eliminates bulky top clamps, maximizing clear chip evacuation space.
3. Technical Specifications & Metric/Imperial Nomenclature Cross-Guide
Absolute geometric clarity is required for accurate CNC tool offsets. Below is the precise international ISO classification breakdown for the S25S-SSKCR09 model:
| Parameter Dimension | Metric System Specification | Imperial Equivalent Measurement |
|---|---|---|
| Shank Diameter (d) | 25 mm | 0.9842 inches (Fits perfectly within standard 1.00" imperial split reduction sleeves) |
| Total Tool Length (L) | 250 mm | 9.8425 inches (Standard format optimized for versatile mid-depth boring cycles) |
| Minimum Bore Diameter (D-min) | 32 mm | 1.2598 inches (Provides exceptional clearance for clean chip removal) |
| Compatible Carbide Insert Layout | SCMT 09T3xx / SCGT 09T3xx | SCMT 3(2.5)1 / SCMT 3(2.5)2 (3/8" IC Square Size, 3.97mm Thick) |
| Clamping Screw Model Type | M3.5 x 9.0 | M3.5 x 0.3543 inches |
| Torx Key Driver Wrench Size | T15 | T15 Torx Wrench |
Recommended Technical Machining Parameters (Speed & Feed Guide)
| Workpiece Material Classification | Cutting Speed (Vc) Range | Feed Rate (f) Per Revolution |
|---|---|---|
| Carbon Steel / Alloy Steel (HB180-280) | 130 - 210 m/min (426 - 689 SFM) | 0.08 - 0.25 mm/rev (0.0031 - 0.0098 IPR) |
| Stainless Steel Matrix (304, 316, 420) | 75 - 140 m/min (246 - 459 SFM) | 0.06 - 0.18 mm/rev (0.0024 - 0.0071 IPR) |
| Cast Iron Grades (GG25, GGG40) | 90 - 170 m/min (295 - 558 SFM) | 0.10 - 0.30 mm/rev (0.0039 - 0.0118 IPR) |
4. Product Application Scenarios
The rigid steel composition and popular 25mm right-hand geometry make the S25S-SSKCR09 a versatile asset across production fields:
- Standard Internal Cylinder Boring: Highly efficient for boring out structural sleeve components, pump blocks, and automotive wheel hubs.
- Multi-Step Internal Profiling: The 75° approach angle allows the tool to run continuous profiling paths, interpolating intricate internal steps with high accuracy.
- Medium-Bore Steel Adapters: Extensively deployed across general job shops for machining hydraulic manifolds, custom bushings, and pipeline fittings.
5. Compatibility & Equipment Interface
The ground 25mm cylindrical tool body locks firmly into industry-standard metric CNC lathe turrets, static VDI/BMT tool block clamps, and linear gang-tool slides. For workshops operating on imperial standards, it adapts flawlessly inside standard 1.00-inch imperial split bushes. This boring bar is fully compatible with premium CNC turning center equipment, including Haas, Mazak, DN Solutions/Doosan, Okuma, Mori Seiki, and automated multi-axis mill-turn cells.
6. BEYOND Premium Substrate & Grade Selection Matrix
Pair your S25S-SSKCR09 boring bar with the appropriate BEYOND insert grade to maximize tool life and master chip breakages:
- BYM11 Grade (PVD Coated Substrate): Structured with micro-hard TiAlN coatings. Optimized to stop built-up edges (BUE) on sticky materials like 304 stainless steel and high-temp titanium alloys.
- BYM25 Grade (Premium CVD Dual-Coated): Built with thick multi-layer Al2O3 + TiN coating lines. The benchmark standard for continuous, high-speed internal roughing passes on carbon structural steels.
- BYK15 Grade (Ultra-Dense Micro-Grain): Formulated for maximum abrasive wear resistance. Custom-engineered for high-speed internal profiling of abrasive grey and ductile cast iron parts.
7. Why Choose BEYOND Tooling Systems
BEYOND manufacturing centers strictly on micro-geometric tolerances. The S25S-SSKCR09 boring bar undergoes rigorous multi-axis automated milling and specialized induction heat treatments. By holding our indexable pocket seats within an ultra-precise ±0.01mm limit, we eliminate carbide micro-movement under heavy pounding. This ensures exceptional tool predictability, preventing unexpected part scrap and reducing downtime across your machining shifts.
Global Machinist Field Reports:
We have three of these S25S-SSKCR09 bars running across our Haas cells. They take consistent 1.5mm depths-of-cut in 1045 steel all day without breaking a sweat. Pocket tolerance is perfect; replacement screws fit tightly every time.
Hervorragende Qualität von BEYOND. Der 25mm Stahlschaft hat eine fantastische Dämpfung. Selbst bei Bohrungstiefen von 100mm bekommen wir eine spiegelglatte Oberfläche hin. SCMT 09T3 Platten sitzen perfekt.
Very solid alloy steel construction. We run it into standard carbon steel parts. The 75-degree approach successfully forces down radial pressure, meaning zero taper issues over deep cycles.
SCMT 09T3チップの収まりが非常に良く、ガタつきが全くありません。スクリューロックが低頭なので、切り屑が奥に詰まらずきれいに排出されます。加工面も非常に安定しています。
We were constantly getting birds-nests with cloned bars. Swapped over to this BEYOND holder and the pocket angle combined with our SCMT chipbreaker breaks the swarf into tiny segments. Ejects perfectly with standard coolant pressure.
8. Frequently Asked Questions (AI & Search Engine Optimized)
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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.