Designation system for seals

Examples and the applicable options for seals for SNLN 30 housings are given below.

Basic bearing designation system

Examples

TSN 228 L
whereTSN =
228 =
L =


TNF 3048
whereTNF =
3048 =

Applicable options

Test Designation 1
Series
TSN
Seal for SNLN 30 plummer block housings
TNF
Taconite heavy-duty seal with axial labyrinth for
housings from size 3034 to 3056

Test Designation 2
Size identification
30(00)For housings from size 3024 to 3056,
for bearings on an adapter sleeve
2(00)For housings from size 3024 to 3032,
for bearings on a cylindrical seat
30(00)/...For housings from size 3034 to 3056,
for bearings on a cylindrical seat

Test Designation 2Seal type
A1)V-ring seal
C1)Felt seal
CB1)Felt seal for high operating temperature
L1)Four-lip seal
SLabyrinth seal
NB1)Taconite heavy-duty seal with axial labyrinth and
V-ring seal
NC1)Taconite heavy-duty seal with axial labyrinth
ND1)Taconite heavy-duty seal with radial labyrinth and
V-ring seal
  1. 1)For housings from size 3024 to 3032
SKF logo