11IRA55 Threading Carbide Insert – 55° Internal Partial Profile, CNC Lathe Tool for Steel, 10 PCS

Description

Product Overview

The 11IRA55 threading carbide insert is engineered with a 55° internal partial profile that creates clean, accurate threads inside a workpiece. This geometry reduces the number of passes required to achieve full thread depth, saving cycle time while maintaining tight tolerances. The insert’s design focuses on delivering a consistent chip flow, which helps to prevent built‑up edge formation and ensures a smooth surface finish on the finished thread.

Constructed from high‑grade tungsten carbide, the insert offers exceptional hardness and wear resistance. The carbide material is bonded with a cobalt matrix that provides the right balance of toughness and rigidity, allowing the tool to withstand the high forces generated during internal threading on steel and alloy substrates. This durability translates into longer tool life and reduced replacement costs for high‑volume production environments.

Compatibility is a key strength of the 11IRA55. It is suitable for machining a broad spectrum of materials, including carbon steel, tool steel, aluminum alloys, copper alloys, and stainless steel. The insert’s 1/4″ I.C. size and pitch range of 0.5‑1.5 mm (48‑16 TPI) make it adaptable to a variety of thread specifications, from fine to coarse pitches, without the need for multiple tooling setups.

Each package contains ten inserts, each measuring 9.8 × 5.75 × 0.51 inches and weighing just 1.59 ounces. The compact packaging is designed for easy handling and quick inventory management, allowing manufacturers to keep a ready supply of tooling on hand for continuous production runs.

When used on CNC lathe machines, the 11IRA55 delivers stable performance at high spindle speeds. Its optimized geometry reduces vibration and promotes efficient heat dissipation, which helps maintain dimensional stability even during extended machining cycles. This makes the insert an excellent choice for precision components that demand tight thread tolerances and a flawless surface finish.

Usage

The 11IRA55 is ideal for internal threading applications where accuracy and surface quality are paramount. It excels in producing threads for automotive components such as gear shafts, engine housings, and transmission parts, where consistent thread geometry directly impacts performance and reliability.

In the aerospace sector, the insert is used to machine high‑strength alloys and stainless steel components that require precise thread engagement for fasteners and fittings. Its ability to handle a range of material hardness levels ensures that aerospace manufacturers can rely on a single insert type for multiple part families, simplifying tooling inventories.

Tool and die makers benefit from the insert’s partial profile, which allows for rapid thread formation in small‑diameter holes without sacrificing strength. The insert’s chip evacuation design minimizes the risk of chip re‑cutting, which can otherwise lead to surface defects or tool breakage in delicate die work.

For general industrial machining, the 11IRA55 supports high‑throughput production lines that demand quick changeovers and minimal downtime. Its compatibility with standard CNC lathe controllers means that operators can program thread cuts using conventional G‑code commands, reducing the learning curve and accelerating implementation.

Why Choose Us

HOPSON TOOLS has a long history of delivering high‑performance cutting solutions to the manufacturing sector. Each 11IRA55 insert undergoes rigorous quality control testing, including hardness verification, dimensional inspection, and performance validation on representative workpieces. This ensures that every insert meets the exact specifications required for demanding CNC applications.

Our manufacturing process incorporates advanced sintering techniques that produce a uniform carbide grain structure, resulting in superior edge stability and resistance to chipping. The inserts are also coated with a proprietary anti‑wear layer that further extends tool life when machining abrasive materials such as stainless steel and hardened tool steel.

Customer support is a cornerstone of the HOPSON experience. Our technical service team is available to assist with tool selection, machining parameters, and troubleshooting, providing guidance that helps you achieve optimal results from the first use. We also offer a responsive after‑sales service that includes replacement options and warranty coverage for any manufacturing defects.

Choosing the 11IRA55 means investing in a proven solution that combines precision engineering, material excellence, and dedicated support. This combination reduces total cost of ownership and enhances productivity across a wide range of threading operations.

Key Features

• 55° internal partial profile delivers accurate threads with fewer passes, saving cycle time.
• High‑grade tungsten carbide construction provides exceptional wear resistance and long tool life.
• Versatile material compatibility covers carbon steel, tool steel, aluminum, copper and stainless steel.
• Compact 10‑piece packaging simplifies inventory management and quick tool changes.
• Dedicated HOPSON technical support ensures optimal performance and reliable after‑sales service.

FAQ

What thread sizes can the 11IRA55 handle?

The insert is designed for a 1/4″ I.C. size with a pitch range of 0.5‑1.5 mm (48‑16 TPI), covering both fine and coarse internal threads commonly used in automotive and aerospace applications.

Can the insert be used on hardened steel?

Yes. The carbide material and cobalt binder give the insert the toughness needed to machine hardened tool steel and stainless steel while maintaining edge integrity and minimizing wear.

How many inserts are included in one package?

Each box contains ten individual inserts, each packaged to protect the cutting edge and ensure consistent performance across the entire set.

Is there a recommended coolant for this insert?

We recommend using a high‑performance water‑based coolant with good lubricity to aid chip evacuation and reduce heat buildup, especially when machining stainless steel or copper alloys.

For additional questions or technical assistance, please contact our support team or visit the HOPSON TOOLS website.