Page 670 - Rollingbearings

8 Tapered roller bearings
• Consistency of roller proiles and sizes
The rollers incorporated in SKF tapered
roller bearings are manufactured to such
close dimensional and geometrical toler-
ances that they are practically identical
This provides optimal load distribution,
reduces noise and vibration, and enables
preload to be set more accurately

• Rigid bearing application
A single row tapered roller bearing is typ-
ically adjusted against a second tapered
roller bearing By applying a preload, a
rigid bearing application can be achieved

• Running-in period with reduced tem-
perature peaks
Tapered roller bearings typically have a
running-in period, during which a conven-
tional design tapered roller bearing ex peri-
ences a signiicant amount of friction,
resulting in wear This effect is noticed as a
temperature spike (diagram 1) With SKF
tapered roller bearing designs, friction,
frictional heat and wear are signiicantly
reduced, provided the bearings are Fig. 5
mounted and lubricated correctly Separable bearing

• Separable and interchangeable
Depending on the design, tapered roller
bearings are separable and components
of same-sized bearings are fully inter-
8 changeable For example, single row
tapered roller bearings are separable
(ig. 5), i e the inner ring with roller and
cage assembly (cone) can be mounted
separately from the outer ring (cup) This
facilitates mounting, dismounting and also
maintenance inspection routines

SKF manufactures tapered roller bearings in Diagram 1
many designs, series and sizes In addition to Typical temperature behaviour of tapered roller bearings during the running-in period
the bearings presented in this catalogue, (approximate values)
SKF supplies tapered roller bearings for spe-
cial application requirements This assort- Temperature [°C (°F)]
ment includes: 150
(300)
• Four-row tapered roller bearings
† skf com/bearings
100
• hub units for industrial, automotive, rail- (210)
way and off-highway applications
† contact SKF
50
(120) Conventional design bearings
On request, SKF can also supply customized
SKF basic design bearings
tapered roller bearings for various operating SKF Explorer bearings
conditions to meet the customer and appli- 0
(30)
cation requirements 0 5 10 15 20
Operating hours [h]

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