Dimensions are given in this order: wheel diameter, rim width, rim thickness and Bore diameter, e.g


125 - 10 - 4 - 20
D   W   X   H


D Diameter
  The greatest diameter accepted by the machine is normally chosen, without ever exceeding the maximum work speed allowed by the machine, as stated in the machines user guide or owner´s manual.
W Rim width
  Is determined by the surface to be worked. The general rule is; the wider, the rim, the harder, the wheel.
X Rim thickness
  Affects the wheel price, not its quality. A thicker rim makes the wheel more economical.
H Bore
  Our Bores have an H7 tolerance. Cup-shaped wheel bores must not exceed 60 % of the bottom surface area.