Page 57 - Rollingbearings
P. 57
Rounding values
Rounding values
Shoulder diameters
The dimensions for the shoulder diameters
of radial bearings are rounded up or down to
a level that is suitable for general machinery
applications. Diameter dimensions of the
inner ring are rounded down, whereas those
of the outer ring are rounded up.
Tolerances
Load and speed ratings and
fatigue load limits
The values of these parameters are rounded
to a level that its the accuracy of the calcula- A.2
tions they are intended to be used in.
Masses
Masses are rounded to approximately ±5% of
the actual value. They do not include the
weight of any packaging.
Temperatures
Temperatures are typically rounded to 5 °C
and are presented in both units (°C and °F).
Because of the rounding, temperature
values may not match when using unit
conversion formulae.
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