1fixed bearing
bearing in determining the type and model of the future must also be correct for a combination of rolling bearing design, to ensure the normal operation of the bearing.
Bearing composite structure design, including:
1) The end of the shaft supporting structure;
2) with bearings and related parts;
3) Bearing lubrication and sealing;
4) increase the stiffness of the bearing system.
1 fixed at both ends (both ends of the one-way fixed)
Under normal operating temperature of the minor axis (span L <400mm), often used at both ends of a one-way fixed pivot means, each bearing the axial direction, respectively, to withstand force. Shown, to allow a small amount of work axis thermal expansion, installation should be left bearing axial clearance 0.25mm-0.4mm (the gap is very small, do not have to draw on the diagram), the amount of space used pads or adjust screw adjustment.
Features: two-way movement restrictions axis, little change in the temperature axis.
Note: Consider heat elongation, bearing cap and the compensation gap left between the outer end c, c = 0.2 ~ 0.3mm.
2. Two-way fixed at one end, one end of the swimming
When the axis is longer or the temperature is high, the axis of the large amount of thermal expansion, contraction, should adopt the two-way fixed at one end, one end of the swimming fulcrum structure, as shown.
Fixed terminus of a single two-way bearings or bearings to withstand an axial force, and the telescopic shaft is guaranteed to end swimming when free swimming. To avoid loose, swimming with the axis of the bearing inner ring should be axially fixed (often elastic ring).Cylindrical roller bearings with a fulcrum for swimming, the bearing outer ring to be axially fixed with the base, by the ring between the roller and the shaft to ensure free swimming expansion.
Features: a two-way fixed pivot, another fulcrum for axial swimming.
Swim in deep groove ball bearings as the fulcrum, bearing outer ring and cover the gap left.
Cylindrical roller bearings as swimming pivot bearing outer ring should be two-way fixed.
Applies: the larger the temperature axis.
 



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