Page 947 - Rollingbearings

Designs and variants
Designs and Support rollers (R)STO design support

variants without lange rings rollers
• are available (ig. 4):
• require adjacent components to guide the – with an inner ring that can be mounted
SKF support rollers are available without or outer ring and cage axially separately from the outer ring and roller 15
with lange rings (ig. 2). They have a thick- • are based on needle roller bearings and cage assembly, which must always
walled outer ring with its running surface • are available: be kept together as supplied
crowned as standard. However, support – with an inner ring, which is slightly – without an inner ring (preix R)
rollers with a cylindrical (lat) running surface wider than the outer ring to avoid axial – only open (without seals)
are also available (designation sufix X) clamping of the outer ring
Support rollers without lange rings – without an inner ring (designation preix
require adjacent components to guide the R), intended for arrangements where (R)NA 22…2RS design
outer ring and cage axially. the pin or shaft is hardened and ground support rollers
Support rollers with lange rings do not These support rollers are not listed in
need adjacent components to guide the this catalogue, but can be found online • are available (ig. 5):
outer ring and cage axially (ig. 3). Axial at skf com/go/17000-15-3 – with an inner ring that can be mounted
loads, which are induced when shafts are separately from the outer ring and roller
not horizontal or aligned properly, are and cage assembly
accommodated by the lange rings. – without an inner ring (preix R)
– greased and capped with a sheet steel
reinforced NBR contact seal on both
sides
• have the needle roller and cage assembly
axially guided between two integral
langes in the outer ring to form a
non-separable unit

Fig. 2 Fig. 3 Fig. 4
Support rollers Application of support roller with lange
rings

STO RSTO

without lange rings
Fig. 5

NA 22…2RS RNA 22…2RS
with lange rings

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