OYYU 27VER 3ACME OY880A External Threading Insert for Heavy-Duty ACME Threads
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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.
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 |
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., GermanyFrequently 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.
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.