CHOOSING COMBINED ROLLER BEARINGS & MATING STEEL PROFILES
By considering the moment-balance of the sliding system, the Hertzian Pressure exerted on the steel profiles can be calculated. In most applications it is the Hertzian Pressure that is the limiting factor. This is the "pressure" at which the point load exerted by the bearings begins to deform the rails (steel profile).
1) Calculate the moments - the force on the bearing
depends on the distance between i) the load and the point of suspension and
ii) the bearings and the point of suspension.
2) Check the Hertzian Pressure - the pressure
on the profile should not exceed the tensile strength of the steel in
order to prevent depressions in the rails.
If you need help with any of these calculations, call Kate or Matt (01908 511733) or email a drawing to: firstname.lastname@example.org
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