Size Range : 18-21mmLength Overall : 330mmLenght Blades : 40mmLenght Pilot cutting tail : 140mmLenght Pilot short tail : 100mmSize of Square : 12mmNumber of Blades : 5Weight : 0,545 kgDescription :Right-hand cutting reamer with expanding blades.Exchangeable pilots at the front as well as at the back of the reamer.Each pilot is provided with square and sliding cone bush.A special bayonet coupling with mating cones between each pilot and the reamer body ensures correct alignment. Extension pilots are available in many different sizes.The blades are ground for taking a rough cut followed by finish reamer.Due to the unique Hunger relief grinding operation, the blades have a progressively increasing clearance angle, giving a softer cutting action.The adjustment nut is marked with a circular scale. One graduation of the scale corresponds to an alternation of the reamer diameter by 0,02mm.Application :The universal reamer for all types of holes, particularly for inline reaming of two or more holes.The cone bushes provide for exact alignment between the hole being rearmed and the other mating holes.Order Information :The reamers are available with standard blades made from high quality special steel to ensure superior cutting efficiency. The reamers are also available with hard chromium coated blades. This finish has superior hardness in combination with a low friction coefficient. This reamers of the "hard chromium" series are particularly suitable for reaming abrasive materials and materials with a tendency to adhere and to build-up the cutting edge.