Page 46 - Y-bearing-units

Design of Y-bearing arrangements

Table 3b
ISO shaft tolerances for Y-bearings with a standard
inner ring
Shaft Deviations of shaft diameter
diameter
d j5 j6 k5
Deviation
over incl. high low high low high low
mm µm

10 18 +5 –3 +8 –3 +9 +1
18 30 +5 –4 +9 –4 +11 +2
30 50 +6 –5 +11 –5 +13 +2
50 80 +6 –7 +12 –7 +15 +2

F or Y-bearings on an adapter sleeve or
Y-bearings with SKF ConCentra locking, a shaft
seat machined to h9/IT5 tolerance is adequate.
The values for h9 ISO tolerances are listed in
table 3a.
For Y-bearings with a standard inner ring, the
same recommendations apply as for standard
deep groove ball bearings († table 2, page 43).
The values of these ISO tolerances are listed in
table 3b.

Table 3a
ISO shaft tolerances for Y-bearings, except for Y-bearings with a standard inner ring
Shaft Deviations of shaft diameter
diameter
d h6 h7 h8 h9 h10 h11
Deviation
over incl. high low high low high low high low high low high low
mm µm
10 18 0 –11 0 –18 0 –27 0 –43 0 –70 0 –110
18 30 0 –13 0 –21 0 –33 0 –52 0 –84 0 –130
30 50 0 –16 0 –25 0 –39 0 –62 0 –100 0 –160
50 80 0 –19 0 –30 0 –46 0 –74 0 –120 0 –190
80 120 0 –22 0 –35 0 –54 0 –87 0 –140 0 –220

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