Designation system

The designations of most SKF rolling bearings follow a system that may consist of a basic designation with or without one or more prefixes and/or suffixes (→ Basic bearing designation system).
An example and the applicable options for spherical roller thrust bearings are given below.
Basic bearing designation system

Example

29480 EM
where29480 =
E =
M =

Applicable options for spherical roller thrust bearings

Test Designation 1
  Prefixes (n.a.)

Test Designation 2
Basic Designation
Listed in table 1

Catalogue image - Test Designation 3
Suffixes - Internal design
EOptimized internal design

Test Designation 4
Suffixes - External design (seals, snap ring groove etc.)
N1One locating slot in the housing washer
N2Two locating slots in the housing washer, 180° apart

Catalogue image - Test Designation 5
Suffixes - Cage design
Stamped steel cage, roller centred, for E design bearings size ≤ 68 or machined brass cage, shaft washer centred, for bearings without any designation suffix
FMachined steel cage, shaft washer centred
F3Machined cage of spheroidal cast iron, shaft washer centred
MMachined brass cage, shaft washer centred

Catalogue image - Test Designation 6.1
Suffixes - Materials, heat treatment (n.a.)

Test Designation 6.2
Suffixes - Accuracy, clearance, preload, quiet running (n.a.)

Catalogue image - Test Designation 6.3
Suffixes - Bearing sets, matched bearings (n.a.)

Test Designation 6.4
Suffixes - Stabilization (n.a.)


Suffixes - Lubrication (n.a.)

Test Designation 6.6
Suffixes - Other variants
VE447(E)Shaft washer with three equally-spaced threaded holes in one side face to accommodate hoisting tackle. The E indicates that appropriate eye bolts are supplied with the bearing.
VE632Housing washer with three equally-spaced threaded holes in one side face to accommodate hoisting tackle
VU029Shaft washer modified for applications with small axial clearance
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