Page 79 - Rollingbearings

Selection criteria
Selection criteria Other space­related criteria that inluence • very limited radial space
the selection of bearing type include: – needle roller bearings
– deep groove ball bearings in the 618 or
Available space • shafts with small diameter (approx 619 series
d < 10 mm) – CARB toroidal roller bearings in the C49,
Often the boundary dimensions of a bearing – deep groove ball bearings C59 or C69 series
are predetermined by the machine’s design – needle roller bearings – bearings without inner or outer ring and
Typically, the shaft diameter determines the – self-aligning ball bearings raceways machined directly on the shaft
bearing bore diameter For the same bore – thrust ball bearings or in the housing
diameter, different outside diameters and
widths may be available (ig. 18) The availa­ • shafts with normal diameter
bility of bearings in a certain ISO dimension – all bearing types
series depends on bearing type and bore
diameter
Fig. 17

Floating bearing arrangement, NJ design cylindrical roller bearings,
mirrored, with offset rings

s/2 s/2

Bearing type and arrangement

Fig. 18
B.2
ISO dimension series for the same bore diameter

18 19 00 10 30 02 22 03 23 04

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