Datasheet

Designations
The designations for SKF stainless steel
deep groove ball bearings follow the basic
SKF designation system except for inch
types. However, the prefix “W” has been
implemented to indicate that the material
is stainless steel.
Supplementary designations
In addition to the designation suffixes that
are listed in the SKF rolling bearings cata-
logue, the following designation suffixes are
relevant for SKF stainlees steel deep groove
ball bearings:
W Stainless steel deep groove ball
bearing metric series
D/W Stainless steel deep groove ball
bearing inch series
X One boundary dimension deviates
from ISO standard
BB1 Two or more boundary dimensions
deviate from ISO standard
2TS PTFE seal for stainless steel deep
groove ball bearing
2ZS Shield of pressed sheet steel on
both sides of the bearing with
retaining ring
R Flanged outer ring
R-2Z Shield of pressed sheet steel on
both sides of the bearing and
flanged outer ring
VT378 Food grade grease with aluminium
thickener of consistency 2 to the
NLGI Scale for a temperature range
–25 to +120 °C (normal fill grade)
VP311 VP311 Blue colored seal made of
FDA and EC approved rubber (NBR)
on both sides of the bearing and
lubricant registered by NSF as cat-
egory H1. FDA approval according to
CFR 21 section 177.2600 ‘Rubber
articles intended for repeated use’
for use in contact with aqueous and
fatty foods. EC approval according
to the overall migration require-
ments of the German BfR recom-
mendation XXI for category 3
materials.
For additional information, refer to the
SKF rolling bearings catalogue or the SKF
Interactive Engineering Catalogue available
online at www.skf.com.
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