Designation system for seals

Examples and the applicable options for seals for SNL and SE housings are given below.

Basic bearing designation system

Examples

TSN 518 L
whereTSN =
518 =
L =

Applicable options

Test Designation 1Series
TSNSeal for SNL and SE plummer block housings
TK
Taconite seal
FSFelt strip
FSBFelt strip for high operating temperature

Test Designation 1Size identification
2(00)Housing for bearings with a cylindrical bore, diameter series 2
3(00)Housing for bearings with a cylindrical bore, diameter series 3
5(00)Housing for bearings on an adapter sleeve, diameter series 2
6(00)Housing for bearings on an adapter sleeve, diameter series 3
  (00)

Size code of the bearing, (00) x 5 = bearing bore diameter [mm]

...For felt strips only, number indicating the length of the strip

Test Designation 2Seal type
AV-ring seal
CFelt seal
CBFelt seal for high operating temperature
LFour-lip seal
SLabyrinth seal

Test Designation 2Indication for an inch shaft
A, E, V
Seal for inch shaft
SKF logo