Finishing shell reamer 90 H7 NRNb DIN 219A HSS

Technical data of the 90 H7 push-on reamer

- working diameter D (H7) - 90 H7 mm

- total length L - 100 mm

- length of working part l - 71 mm

- diameter of the clamping hole d - 50 mm

- number of teeth Z - 16

- tolerance 90 H7 - lower dimension min. 90.00 mm; upper dimension max. 90.035 mm.

Finishing shell reamer for metal fi 90

Professional finishing shell reamer 90 H7 machine NRNb, with a diameter of 90 mm, designed for final machining of cylindrical holes in H7 tolerance. It is a slip-on finish reamer with a tapered shank, made according to dimensional standard 219A. It features straight chip grooves. It is suitable for improving the smoothness of the machined surface, bringing out the axis of the hole and also for increasing the dimensional accuracy of the hole. The 90-machine countersinks in our offer are produced from modern HSS high-speed steel. Thanks to it, they are distinguished by increased resistance to very difficult cutting conditions, high resistance to potential damage to blades, as well as greater hardness and durability. They are suitable for machining parts made of hard unalloyed steels, metals, non-ferrous metals, metal alloys and other materials of the P1.2 class - P1.3. They can be used on conventional and CNC-controlled machine tools.