Page 347 - Rollingbearings

Designs and variants
Insert bearings with Sealing solutions Standard seals with
a standard inner ring SKF supplies all insert bearings capped with additional lingers

a seal or shield on both sides In typical • are recommended for the more contami-
• are suitable for applications where smooth insert bearing applications, no additional nated environments
running is a key operational parameter external protection is necessary Therefore, • consist of a a standard seal and an addi- 2
• have normal tolerances for the bearing insert bearings are available with several tional sheet steel or stainless sheet steel
bore diameter and are locked onto the sealing arrangement designs to meet the plain linger (ig. 21, designation sufix 2F)
shaft using an appropriate interference it demands of a wide range of operating • have an interference it for the linger on
• have the same dimensions and features as conditions the inner ring shoulder to improve consid-
deep groove ball bearings in the 62 and 63 When capped bearings must operate erably the effectiveness of the seal without
series, but have a spherically shaped under certain conditions, such as very high increasing friction
( convex) outside surface (ig. 19, bearing speeds or high temperatures, grease may • are only available for bearings with an
series 17262 and 17263) appear between the inner ring and capping inner ring extended on both sides
• accommodate heavier axial loads than any device For bearing arrangements where this
other insert bearing would be detrimental, appropriate actions
• can operate at the same speeds as a should be taken
corresponding sealed deep groove ball
bearing
• are capped on both sides with: Standard seals
– an NBR contact seal (RS1 seals,
page 346, designation sufix 2FRS1) as • consist of a stamped sheet steel washer
standard with a seal lip made of NBR, vulcanized to
– a rugged standard seal (Standard seals, its inner surface (ig. 20, designation sufix
designation sufix 2FRS1/VP274) VP274 for bearings with a standard inner
• do not have any lubrication holes in the ring and no designation sufix for other
outer ring as standard insert bearings)
• can be supplied with two lubrication holes • form, with its non-contact sheet steel
in the outer ring, one on each side, posi- washer, a narrow gap with the inner ring
tioned 120° apart (designation sufix B) shoulder to protect the seal against coarse
contaminants

Fig. 19 Fig. 20 Fig. 21
Bearing with a standard inner ring Standard seals Standard seals with additional linger

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