OYYU 27VER 3ACME OY880A External Threading Insert for Heavy-Duty ACME Threads

27VER 3ACME OY880A Vertical Threading Insert High-Stability Vertical ACME Solution for Toughest Steel & Stainless Alloys Product Overview "Which threading insert is most reliable for large-pitch 3 TPI ACME external threading on heavy-duty shafts where vibration and heat generation are concerns?" The OYYU 27VER 3ACME OY880A is a vertical-mount threading insert specifically engineered for industrial-scale trapezoidal thread profiles. Featuring the OY880A Grade (performance equivalent to the industry-leading VP15TF), this insert utilizes a specialized PVD multi-layer nano-coating that excels in diverse materials, particularly in stainless steel and heat-resistant alloys. Its vertical orientation (V-Style) ensures the carbide substrate is positioned to absorb massive radial cutting forces, delivering exceptional dimensional accuracy and superior surface finish for 3 TPI external ACME threads on large-diameter workpieces. Model Breakdown: 27 VER 3 ACME 27 IC Size (mm) V Vertical Style E External R Right Hand 3 3 TPI Pitch ACME 29° Profile Key Features OY880A PVD Grade: Engineered with Nano-structured TiAlN coating, mirroring VP15TF for extreme wear resistance and oxidation protection in high-temp machining. Vertical Structural Integrity: The vertical design provides maximum carbide thickness behind the cutting edge, essential for absorbing the heavy impact of large-pitch (3 TPI) ACME threads. Precision Full-Profile: Designed to cut the complete 29° ACME geometry, including the crest, ensuring burr-free threads and high repeatability. Superior Edge Toughness: Specialized substrate prevents micro-chipping during interrupted cuts or when processing high-tensile alloy steels. Technical Specifications Parameter Metric (ISO) Imperial (ANSI) Insert Model 27VER 3ACME 27VER 3ACME Thread Pitch 8.467 mm 3 TPI Cutting Speed (Vc) 70 - 130 m/min 230 - 425 sfm Recommended Passes 16 - 24 16 - 24 Compatible Tool Holders: For optimal precision, use with SER 2727... or SER 3232... specialized vertical threading bars. Shop 27VER External Vertical Holders → Industrial Applications Heavy-duty lead screws for industrial machinery. Oil & Gas valve components and pipe connectors. Power transmission in construction equipment. Excellent for Carbon Steel, Alloy Steel, and Stainless (304/316). System Compatibility Fits all ISO standard vertical threading holders (27V size). Fully optimized for heavy-duty CNC Lathes requiring high-torque ACME thread generation with maximum stability. OYYU Brand Grade Comparison OYYU Grade Equivalency Primary Application OY880A VP15TF Stainless & General Finishing (King) OY818P UE6020 Steel Medium to Roughing OY515M US735 Difficult-to-Cut Stainless Alloys OY313K UC5115 Cast Iron Applications Why Choose OYYU Tools? ★★★★★ "Performance is identical to VP15TF. We saved 40% on tooling costs for our ACME shaft project." — James R., USA ★★★★★ "Excellent finish on 316 stainless. No chipping even after 20 threads. OY880A is very reliable." — Marco G., Italy ★★★★★ "Top Standzeit bei der Bearbeitung von legiertem Stahl. Die 27V Passform ist perfekt." — Werner S., Germany Frequently Asked Questions Q: What is the main benefit of the OY880A grade? A: OY880A is a versatile PVD grade that offers high toughness and excellent heat resistance, making it the best choice for mixed production involving steel and stainless. Q: How many passes are required for 3 TPI ACME? A: Due to the massive depth of a 3 TPI thread, we recommend 16 to 24 passes. Using a modified flank feed is highly recommended to control chip load. Q: Is this insert compatible with other brand holders? A: Yes, it is fully compatible with any tool holder designed for 27V (Vertical) ISO threading inserts. Material Tip: OY880A is the "General King." For specialized high-volume stainless runs, consider OY515M for improved chip control.