Page 361 - SKF-bearing-housings

Sealing solutions

Fig. 7 Seal kits
Labyrinth seal The seals for SONL housings are supplied as
kits and must be ordered separately.
Seal kits for housings for a through shaft,
designation TSO († fig. 8, page 358),
include:
• 2 labyrinth rings with O-rings
• 2 shaft sleeves, one of them for the
oil pick-up ring
• 1 oil pick-up ring
• 1 oil level gauge
• 1 magnetic plug
• mounting instructions

7

Table 1
Standard seal kits for SONL plummer block housings
Seal kit For through shaft For shaft end
Type Labyrinth Labyrinth
Designation TSO TSO .. A
Material grey cast iron, nitrile rubber grey cast iron, nitrile rubber
Seals per pack 2 seals 1 seal + 1 end cover

Application conditions and
requirements
Temperature [°C] –40 to +110
Temperature [°F] –40 to +230
Max. misalignment [°] 0,3
Low friction ++
Axial shaft displacement ++
Shaft tolerance class 1)
Shaft roughness R a [µm] 3,2

Symbol: ++ very suitable

1) For information about shaft tolerances, refer to the section Shaft specifications on page 362.

357