ISO 521:2011
ISO 521:2011



ISO 521:2011 specifies the dimensions of machine chucking reamers with cylindrical shanks and Morse taper shanks.

It deals with the following types of reamer:

  • machine chucking reamers with cylindrical shanks in the range from 1,32 mm to 20 mm diameter;
  • machine chucking reamers with Morse taper shanks in the range from 5,30 mm to 50 mm diameter.

For each type of reamer, ISO 521:2011 gives two tables, one showing preferred sizes with corresponding dimensions, and the other being a general table set out as functions of diameter steps. Provision is also made for tolerances on lengths, cutting diameters and the diameters of cylindrical shanks.

General information 

  •  :  Published
     : 2011-10
  •  : 2
     : 6
  •  : ISO/TC 29/SC 9 Tools with defined cutting edges, holding tools, cutting items, adaptive items and interfaces
  •  :
    25.100.30 Drills, countersinks, reamers

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