Page 443 - Rollingbearings

Designs and variants
Table 1

Technical speciications of SKF standard greases for sealed self-aligning ball bearings
Bearing Grease Temperature range 1) Thickener Base oil NLGI grade Base oil viscosity
outside type [mm 2 /s]
diameter at 40 °C at 100 °C
[mm] (105 °F) (210 °F)
–50 0 50 100 150 200 250 °C

D ≤ 62 MT47 Lithium soap Mineral 2 70 7,3
D > 62 MT33 Lithium soap Mineral 3 100 10

–60 30 120 210 300 390 480 °F
4

1) Refer to the SKF trafic light concept (page 117).

Fig. 7 Table 2 Table 3
Annular groove and lubrication holes Reduction factor for the grease life, Bore tolerance of self-aligning ball bear-
depending on the load ings with an extended inner ring
Load P Reduction factor Bore diameter Tolerance class JS7
d Deviation
> ≤ U L
≤ 0,05 C 1
0,1 C 0,7 mm μm
0,125 C 0,5
0,25 C 0,2 18 30 +10,5 –10,5
30 50 +12,5 –12,5
50 80 +15 –15

Fig. 8 Fig. 9
Bearing with an extended inner ring Axial location of bearings with an extended inner ring

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