Page 460 - SKF-bearing-housings

Split pillow blocks SDAF series including the extended range (inch dimensions)

Standard seals for SDAF and SDAF extended range plummer block housings

Seal
Type Labyrinth PosiTrac PosiTrac Plus
Designation LER, ERF LOR LOR with B-10724
Material aluminum or steel aluminum, aluminum,
nitrile rubber nitrile rubber
Application conditions
and requirements
Temperature [°F] –30 to 300 –30 to 220 –30 to 220
Max. circumferential speed same as bearing same as bearing limited 1)
Misalignment [°] 0,3 0,3 0,3
Low friction ++ ++ +
Axial shaft displacement ++ + –
Vertical shaft arrangement – – ++
Grease relubrication + + +
Oil lubrication – – ++
Replacement + + +

Sealing suitability
Dust – – +
Fine particles – – +
Coarse particles + + +
Chips + + –
Liquids when sprayed –– –– –
Direct sunlight + + +

Symbol: n/a not applicable
++ very suitable
+ suitable
– limited suitability
–– unsuitable

1) For speed limits † tables 2 and 3.
2) For more information, contact the SKF application engineering service.

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