1/4″ Tungsten Carbide Roughing End Mill 4 Flute Square Endmill CNC Milling Cutter Bits for Alloy Steels/Hardened Steels – TISIN Coated

Description

Product Overview

The AYCHOLIZ 1/4 inch tungsten carbide end mill is engineered for demanding CNC milling tasks where strength, stability, and precision are paramount. Constructed from 100% solid carbide with a micro grain size of 0.6μm, the tool offers exceptional rigidity and resistance to deformation under high cutting forces. The TiSiN coating applied to the cutting edges creates a low‑friction surface that reduces heat buildup, extends tool life, and enables higher cutting speeds without sacrificing accuracy. With a 4‑flute square geometry, the end mill delivers superior chip evacuation, minimizing recutting and improving surface finish. Overall dimensions of 2.5 x 0.25 x 0.25 inches and a lightweight design of 0.1 ounces make the tool easy to handle while maintaining the robustness required for machining alloy and hardened steels.

Usage

This end mill excels in rough machining environments where large volumes of material must be removed quickly and efficiently. It is ideally suited for slot machining, step surface creation, and high‑speed milling of alloy steels, stainless steels, and hardened steel components. The tool’s high machining efficiency and large chip removal capacity make it a reliable choice for automotive, aerospace, and tooling industries that demand consistent performance on tough workpieces. Users should set appropriate feed rates and spindle speeds to match the TiSiN coating’s optimal operating window, ensuring maximum tool longevity and preventing premature wear. The end mill’s design also supports use in multi‑axis CNC machines, allowing complex geometries to be produced with minimal tool changes.

Why Choose Us

Choosing AYCHOLIZ means selecting a brand committed to quality, innovation, and customer satisfaction. Our end mills undergo rigorous 200+ cycle stress testing to verify durability and performance under real‑world conditions. The TiSiN coating is applied using advanced PVD technology, guaranteeing uniform coverage and superior adhesion that resists chipping and delamination. Each tool is inspected for dimensional accuracy, with an error tolerance of -0.02mm, ensuring that you receive a product that meets exacting standards. In addition, our responsive after‑sales support provides technical assistance, replacement options, and guidance on optimal cutting parameters, helping you achieve the best results on every job.

Key Features

• TiSiN coating delivers high temperature stability and wear resistance for longer tool life.
• 4‑flute square geometry ensures efficient chip evacuation and superior surface finish.
• Solid carbide construction with 0.6μm micro grain size provides exceptional rigidity.
• Optimized for rough machining of alloy and hardened steels, increasing productivity.
• Dedicated customer support and technical assistance for seamless integration into your workflow.

FAQ

What cutting speeds are recommended for this TiSiN coated end mill?

For optimal performance, we recommend spindle speeds between 8,000 and 12,000 RPM and feed rates of 0.001–0.003 inches per tooth, depending on material hardness and machine rigidity.

Can this end mill be used on hardened steel with a hardness above 45 HRC?

Yes, the TiSiN coating and solid carbide body allow the tool to handle hardened steel up to 55 HRC when proper cutting parameters are applied.

Is the TiSiN coating suitable for dry machining?

The TiSiN coating reduces friction and heat, making it well‑suited for dry machining applications, though using coolant can further extend tool life.

What is the recommended method for sharpening this end mill?

We advise using a CNC grinding machine with a diamond wheel set to a 30‑degree angle for the square end profile, ensuring the coating is not damaged during the process.

How does the 4‑flute design affect chip removal?

The four flutes create multiple cutting edges that break chips into smaller pieces, facilitating rapid evacuation and reducing the risk of chip re‑cutting, which improves surface quality and tool stability.