Page 495 - SKF-bearing-housings

Sealing solutions

Table 1 Table 2
Adapter rings for SBD plummer block housings and Labyrinth seals for SBD plummer block
THD take-up housings and THD take-up housings
Material
labyrinth ring Cast iron
adapter ring Fabric reinforced
phenolic resin
Application conditions and requirements
Temperature
with adapter ring –30 to +100 °C
(–20 to +210 °F)
without adapter ring –50 to +200 °C
(–60 to +390 °F)
Max. circumferential speed not limited
[m/s]
Max. misalignment [°] 0,3
Adapter ring Adapter ring bolts
Size Tightening Low friction ++
torque
Axial shaft displacement listed in the product tables
– – Nm
Shaft tolerance class see Shaft
specifications, page 495
PSBD 50 M 3 1
PSBD 55 M 3 1 Shaft roughness R a [µm] ≤ 3,2
PSBD 60 M 4 2
PSBD 70 M 5 4 Sealing suitability
PSBD 80 M 5 4
PSBD 90 M 5 4 Dust +
PSBD 100 M 5 4 Fine particles +
PSBD 110 M 5 4
PSBD 115 M 5 4 Coarse particles +
10
PSBD 120 M 5 4 Chips ++
PSBD 125 M 5 4
PSBD 130 M 5 4 Liquids when sprayed ––
PSBD 135 M 6 7 Direct sunlight ++
PSBD 140 M 6 7
PSBD 150 M 6 7
PSBD 160 M 6 7
PSBD 170 M 6 7
PSBD 180 M 6 7 Symbols: ++ very suitable
+ suitable
PSBD 190 M 6 7 –– not suitable
PSBD 200 M 8 10
PSBD 220 M 8 10
PSBD 240 M 8 10
PSBD 260 M 8 10
PSBD 280 M 8 10
PSBD 300 M 8 10
PSBD 320 M 8 10
PSBD 340 M 10 12
PSBD 360 M 10 12
PSBD 380 M 10 12
PSBD 400 M 10 12
PSBD 420 M 10 12

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