Each bearing is designated by a drawing reference, example :  06 1116 00.

The drawing defines both principal and functional dimensions : spigots, bolt patterns and dimensions, overall height, reference diameter of the gear.

Fastening : the drawing indicates :

. 40 : number of fastening holes
. "=" symbolizes equispaced holes,
."#" = indicates non equispaced holes,
. 1035 : bolt circle diameter.

The symbol "G" indicates the arrangement of the lubrication holes, the standard tapping is : M 10 x 1,00 except for the light series and the solid section light series : M 8 x 1,00.
The raceway mean diameter of the bearing is given for information only.
The gap diameters cannot be used as spigots, except when their dimensionsare toleranced on the drawing.