Iscar 5140143 Modular Reamer Head 3/4 in Straight Flute H7

Product Description

The ISCAR 5140143 is a modular reamer head designed for precision hole finishing in metal cutting applications. It features straight flutes and a left-hand cutting direction, making it suited for specific tooling setups where conventional right-hand rotation is not appropriate. The head carries a Titanium Aluminum Nitride (TiAlN) coating, which improves wear resistance and tool life in ferrous and hardened materials. With a head diameter of 0.7500 inches and a head length of 0.4090 inches, this interchangeable head mounts onto compatible modular reamer bodies, allowing tooling flexibility across multiple bore sizes without replacing the entire tool assembly. Machinists and toolroom technicians are the primary installers.

This modular reamer head is intended for precision reaming operations in machining environments, including CNC machining centers and manual mills where tight hole tolerances are required. The h7 hole tolerance classification designates it for close-clearance fits, common in bearing bores, hydraulic component ports, and precision assembly applications. It conforms to ISO 13399 tooling standards, supporting integration into tool management systems. Suitable for use in job shops, production machining facilities, and toolroom operations working with ferrous alloys, aluminum, and similar machinable materials.

Key Features

• 0.7500 inch head diameter with h7 hole tolerance for close-clearance precision fits
• Straight flute geometry for controlled chip evacuation in through and blind hole reaming
• Left-hand cutting direction for specialized tooling configurations
• TiAlN coating for enhanced wear resistance and extended tool life in demanding materials
• Modular design mounts onto compatible reamer bodies for flexible tooling setups
• ISO 13399 compliant for compatibility with digital tool management systems

Compatibility

Designed as a modular replacement reamer head for use with compatible ISCAR modular reamer body systems accepting a 3/4 inch head diameter in the h7 tolerance class.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the reamer body and spindle are fully de-energized and the machine is in a locked-out state before mounting or removing the reamer head. Verify that mating surfaces on the reamer body are clean and free of chips or debris before torquing the head into position. Follow the tool manufacturer's assembly instructions for interface engagement to avoid damage to the modular connection.