Page 83 - Rollingbearings

Selection criteria
Precision Table 2
Stabilization of SKF rolling bearings
Precision requirements typically do not inlu­
ence bearing type selection Most SKF bear­ Stabilized for temperatures
≤ 120 °C ≤ 150 °C ≤ 200 °C
ings are available in various tolerance (250 °F) (300 °F) (390 °F)
classes Details are provided in the product
sections
Ball bearings Radial Deep groove ball bearings ● – –
For very high precision requirements, e g
machine tool applications, use SKF super­ Angular contact ball ● ● –
bearings
precision bearings (SKF catalogue Super-
precision bearings or available at Four­point contact ball ● ● –
skf com/super­precision) bearings
Self­aligning ball bearings ● ○ –

Stiffness Thrust Thrust ball bearings ● ● 1) –

The stiffness of a rolling bearing is charac­
terized by the magnitude of the elastic
deformation in the bearing under load and Roller bearings Radial Cylindrical roller bearings ● ● –
depends not only on bearing type, but also
Needle roller bearings ● – –
on bearing size and operating clearance
When selecting bearing type on the basis Tapered roller bearings ● ● –
of stiffness requirements, you should con­ Spherical roller bearings ● ● ●
sider, for bearings with the same size, that:
CARB toroidal roller ● ● ●
• stiffness is higher for roller than for ball bearings
bearings
• stiffness is higher for full complement
Thrust Cylindrical roller thrust ● – –
bearings than for the corresponding bearing bearings Bearing type and arrangement
with a cage
• stiffness is higher for hybrid bearings than Needle roller thrust ● – –
for the corresponding all­steel bearing bearings
• stiffness can be enhanced by applying a Spherical roller thrust ● ● ●
preload (Selecting preload, page 186) bearings

● Available as standard
○ Check availability with SKF, check cage material B.2
– Check with SKF
1) Not for all sizes.

Fig. 21
Alignment bearings

Thrust ball bearing with Ball bearing unit Alignment needle
sphered housing washer roller bearing

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