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-               44 M a r M o t i o n . H i g h - p re c i s i o n ro t a r y s t ro k e b e a r i n g s

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5. Computation of the Rotary Stroke Bearing                                                              5.2.2 Radial load as pure
                                                                                                                moment
  Fig. 23
                                                                                                         The end zones of contact length e
                                                                                                         are the most heavily loaded for both
                                                                                                         divided and undivided contact zones.

                                                                                                         Moment            M = PR · l [Nm]
                                                                                                                           PR in N, l in m

                                                                                                         Specific radial force

                                                                                                                           P10 = g · M [N]
                                                                                                                           g in m-1

                                                                                                         The factor g is taken from the diagram

                                                                                                         (Fig. 25). In the case of an undivided

                                                                                                         contact length, the distance is Ii = 0.

                                                                                                         Deflection to be expected at the point

                                                                                                         of application of radial force PR:

                                                                                                         Deflection  A  =  l   P10   R10  [m]
                                                                                                                           e

                                                                                                         R10 in m/N from table (Fig. 27 or 28)

                                                                                                         The deflection of the shaft is not
                                                                                                         taken into account.

                                                                                                         5.2.3 Uneven radial load

                                                                                                         The ball zone next to the point of
                                                                                                         application of the radial force is most
                                                                                                         heavily loaded.

                                                                                                         The specific radial force P10 is a
                                                                                                         combination of the moment M
                                                                                                         and the radial force PR.

                                                                                                         Specific radial force

                                                                                                         P10 = g · M + h · PR [N]
                                                                                                         g in m-1, h dimensionless,
                                                                                                         M in Nm, PR in N

                                                                                                         The factors g and h are taken
                                                                                                         from the diagrams (Fig. 25 and 26)
                                                                                                         depending on the distance li.
                                                                                                         In the case of an undivided contact
                                                                                                         length, the distance is Ii = 0.

       Fig. 24

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