Page 358 - Rollingbearings

2 Insert bearings (Y-bearings)
Design Design for larger axial Fig. 30
displacement
considerations Design for small axial displacement
In applications where there are low speeds
and light loads, an insert bearing with grub
2 screws can be used to accommodate axial
displacement The shaft at the non-locating
Axial displacement bearing position should be provided with one
or two grooves, 120° apart, to engage a
Insert bearings are not intended to accom- modiied grub screw:
modate axial displacement of the shaft rela-
tive to the housing The distance between • Hexagon socket grub (set) screws with a
bearing positions should therefore be short dog point, in accordance with ISO 4028,
to avoid excessive induced axial loads as a but with a ine thread according to
result of thermal expansion of the shaft table 10. The grub screw should be
secured by a nut and a spring or star lock
Design for small axial washer (ig. 31).
displacement
The screws and groove(s) accommodate
To accommodate small axial displacement, changes in shaft length and prevent the
the bearings should be supported by resilient shaft from turning independently of the
sheet metal support surfaces or walls (ig. 30) bearing. The sliding surfaces between the
shaft and inner ring and those in the shaft
grooves should be coated with a lubricant
paste.

Fig. 31
Hexagon socket grub screw with a dog
point secured by a nut and a star lock
washer

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