Page 139 - The Tribology Handbook

A23 Slide bearings

Table 23.2 - continued

Geometsy Surfaces Notes
f-----l 4 Usually plain or hydrostatic; watch thickness t. If hydrostatic an offset vertical
load causes horizontal deflection also

Ball bearings usually but not always, non recirculating, crossed-axis rollers
are also used instead of balls
Proprietary ball and roller, recirculating and non-recirculating units of many
types involving both 2- and 4-track assemblies, complete with rails, are also
available

Most types (including plain, hydrostatic, ball bushes or hour-glass-shaped
- - - _- -___--- rollers) bars liable to bend, bar centres critical, gaps or preload adjustment
not easy

Not usually hydrostatic, bars supported but might rock, bearings weaker,
clearance adjustment is easy by ‘springing’ the slotted housing

A23.4