Maykestag HSS-E NC machine reamer 4.90mm H7 left-hand spiral

Product information

Maykestag HSS-E NC machine reamer 4.90mm H7 left-hand spiral Precision 4.90mm H7 NC machine reamer manufactured from HSS-E, featuring a left-hand spiral and six cutting edges for accurate finishing of pre-drilled holes. The Maykestag Code 3080 is an NC machine reamer manufactured from HSS-E for precision finishing of existing holes. Its left-hand spiral and six cutting edges provide controlled cutting action for reliable hole finishing. With a 4.90mm H7 reaming diameter, 5.00mm nominal shank and catalogue-specified dimensions, this reamer is suited to precision machining applications where accurate hole sizing and a high-quality finished surface are required. The NC-compatible design is similar to DIN 212 and features a straight nominal shank diameter for standardised high-precision toolholding. What is a machine reamer? A machine reamer is a precision cutting tool used to accurately finish an existing hole to a specified diameter and improve its dimensional accuracy and surface finish. Unlike a drill, a reamer is designed to remove a relatively small amount of material from an already prepared hole. Machine reamers are commonly used where consistent hole dimensions are important. Product highlights • HSS-E construction: Cobalt-alloyed high-speed steel provides enhanced heat resistance and wear resistance for demanding precision reaming applications. • 4.90mm reaming diameter: Precision cutting diameter for finishing small-diameter holes. • ISO H7 tolerance: Designed for precision finishing to the specified H7 hole tolerance. • Left-hand spiral: The left-hand spiral geometry provides controlled chip movement during reaming. • Six cutting edges: Six-flute geometry supports balanced cutting and consistent hole finishing. • NC-compatible design: Geometry similar to DIN 212, with a straight nominal shank diameter for standardised precision toolholding. • 5.00mm nominal shank: Suitable for appropriate high-precision toolholding systems. Why choose Maykestag? Maykestag develops precision cutting tools for professional machining applications, with attention to cutting geometry, tool material and dimensional accuracy. These factors are important for achieving consistent machining results, tool life and finished-hole quality. The Code 3080 series combines HSS-E tool material with H7 reaming geometry and a left-hand spiral configuration, providing a practical solution for precision hole finishing in machine-based applications.

Category: Hand Tools > Hand Taper Reamers > Machine Reamers LH