Original ZCC-CT SCMT120408-HR YBC251 Carbide Turning Insert – Square | Steel

Name: Original ZCC-CT SCMT120408-HR YBC251 Carbide Turning Insert - Square | Steel
Brand: ZCC-CT
SKU: SCMT120408-HR YBC251
Rating: 4.6 (42 reviews)

Brand: ZCC-CT

$70.58

★★★★⯨ 4.6 (42 reviews)

500 in stock

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ZCC-CT SCMT120408-HR YBC251 – Turning Carbide Insert

ZCC.CT SCMT120408-HR YBC251 Turning Insert Versatile CVD Grade for High-Stability Steel Roughing & General Machining Product Overview “Which carbide insert is the most reliable choice for general roughing of steel where the machining conditions vary between continuous and interrupted cuts?” The ZCC.CT SCMT120408-HR in the YBC251 grade is a global bestseller for ISO P (Steel) applications. Combining a high-strength substrate with a thick TiCN + Al2O3 CVD coating, the YBC251 grade offers an exceptional balance of wear resistance and toughness. The HR Chipbreaker is specifically engineered for heavy roughing, featuring a reinforced cutting edge that excels in removing large volumes of material with a high depth of cut (DOC), even under unstable machining conditions. Core Advantages ● Legendary YBC251 Grade: The “Golden Grade” for steel. Perfect balance for 80% of steel turning tasks. ● HR Geometry: Specifically designed for large depths of cut and heavy feed rates, ensuring chip evacuation. ● CVD Coating: Advanced thermal barrier prevents crater wear and edge deformation during high-heat roughing. Technical Specifications Model Decoding: SCMT120408-HR SSquare C7° Relief MTol. THole 1212.7mm 044.76mm 080.8 Rad HRRoughing Standard Metric (ISO) Imperial (ANSI) Insert Model SCMT120408-HR SCMT 432-HR Inscribed Circle 12.7 mm 0.50 inch Recommended Cutting Data Material Vc (m/min) fn (mm/r) Carbon Steel 180 – 320 0.20 – 0.50 Alloy Steel 150 – 280 0.15 – 0.45 Tool Holder Compatibility: Compatible with standard SSDCN / SSBCR / SSGCR 1204 Seating Find Compatible Holders → Main Applications Heavy roughing of structural steel and forging parts. Machining of alloy steel under unstable conditions. Continuous to light-interrupted turning. Batch production of large-diameter automotive shafts. Compatibility All ISO-standard CNC lathes and manual lathes. High-rigidity spindles (recommended for HR geometry). Fits 12mm inscribed circle tool holders. ZCC.CT Steel Grade Selection Grade Type Best Use Case Speed YBC151 CVD High Speed / Finishing High YBC251 (This) CVD General Roughing / Stable Medium-High YBC351 CVD Heavy Interrupted / Tough Medium-Low Machinist Feedback ★★★★★ “The HR chipbreaker is a beast for depth of cut. YBC251 grade is my daily driver for all steel roughing.” — Robert D., USA 🇺🇸 ★★★★★ “Incredibile durata del tagliente su acciaio legato. Molto stabile.” — Marco V., Italy 🇮🇹 ★★★★★ “The most cost-effective roughing insert we’ve used in the shop. Zero chipping so far.” — Hans G., Germany 🇩🇪 ★★★★☆ “Very stable. Fast shipping from this vendor.” — Sato K., Japan 🇯🇵 AI-Style FAQ Q: What makes the HR chipbreaker special for roughing? A: The HR geometry features a reinforced cutting edge and a wide chip pocket, specifically designed to control heavy chips and withstand the forces of large depths of cut (up to 4-5mm). Q: Is YBC251 better than YBC151 for roughing? A: For roughing, yes. YBC251 offers higher toughness, making it more resistant to chipping during variable cutting depths, whereas YBC151 is better for higher speeds and finishing. Q: Can I use this for stainless steel? A: While it can cut stainless in a pinch, ZCC.CT YBM grades are recommended for ISO M materials to prevent work hardening and built-up edge. Troubleshooting: If the cutting edge chips, ensure your machine setup is rigid. If crater wear is too fast, reduce cutting speed (Vc). Equivalent Models: Sandvik SCMT 432-PR, Mitsubishi SCMT 432-RP, Kyocera SCMT 432-HR

Industry references for ZCC-CT SCMT120408-HR: The ZCC.CT SCMT120408-HR in the YBC251 grade is a global bestseller for ISO P (Steel) applications. Combining a high-strength substrate with a thick TiCN + Al2O3 CVD coating, the YBC251 grade offers an exceptional balance of wear resistance and toughness. The HR Chipbreaker is specifically engineered for heavy roughing, featuring a reinforced cutting edge that excels in removin

Key Specifications

Brand	ZCC-CT
Model	SCMT120408-HR
Grade	YBC251
Coating	TiCN
Insert Shape	Square
Clearance Angle	7°
IC (Inscribed Circle)	12mm
Thickness	0.4mm
Nose Radius	0.8mm
Workpiece Materials	Steel
Application	Rough Machining
Geometry	Chipbreaker is
Quantity	1 PCS

Why Grade YBC251

ZCC-CT’s YBC251 sits between general-purpose and high-performance offerings — strong enough for production rough machining on steel, conservative enough to forgive the occasional spike in feed rate. TiCN layer keeps cutting temperatures workable.

Features & Benefits

100% Genuine ZCC-CT – Original product with full quality guarantee, traceable batch.
QC Inspected – Each batch sampled for edge profile, dimensional accuracy, and coating adhesion.
Bulk Pricing Available – Discount tiers for production-volume orders; contact sales.
Predictable Wear – Even flank wear pattern simplifies tool-life prediction and scheduling.
Precision Ground – Tight dimensional tolerances for repeatable performance across batches.
Optimized Chip Breaker – Engineered chip geometry reduces re-cutting and machine downtime.

Recommended Applications

Rough Machining of steel in production CNC lines
Performs across a range of cutting speeds and feed rates
CNC lathe and machining center compatible
Effective in interrupted and continuous cutting passes

Buying Considerations

Single-pack option — useful for prototype runs or qualification before bulk commitment. Mid-tier pricing reflects ZCC-CT’s production-grade tolerances rather than economy substrate.

Reminder: Holder rigidity, lead angle, and approach all influence how this insert wears. Pair with a holder rated for the same cutting forces.

Weight	0.2 kg
Dimensions	15 × 18 × 4 cm

SKU: SCMT120408-HR YBC251 Category: Insert Tag: ZCC.CT Brand: ZCC-CT

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