Page 360 - Rollingbearings

2 Insert bearings (Y-bearings)
Shaft tolerances

Recommended seat tolerances for insert
bearings are listed in table 11 The relative
position of the upper and lower limits of the
2 most commonly used ISO shaft tolerance
classes for insert bearings, except for those
with a standard inner ring, is illustrated in
ig. 32 The values for these tolerance
classes are listed in table 12

Insert bearings on an adapter
sleeve or SKF ConCentra insert
bearings

The shaft seat total radial run-out should be
IT5/2 for ISO tolerance class h9� (table 12)

Insert bearings with a standard
inner ring

The same recommendations apply as for
standard deep groove ball bearings (table 11)
The values for these ISO tolerance classes
are listed in table 12, page 156, and
table 14, page 160

Table 11
Recommended shaft seat tolerances

Operating conditions Tolerance class 1)

Insert bearings with grub screws or an eccentric locking collar
P > 0,05 C and/or high speeds h6
0,035 C < P ≤ 0,05 C h7
0,02 C < P ≤ 0,035 C and/or low speeds h8
Fig. 32
Simple bearing arrangements or P ≤ 0,02 C h9 – h11
Recommended its
Insert bearings with a tapered bore on an adapter sleeve or SKF ConCentra insert bearings
All loads and speeds h9/IT5
Insert bearings with a standard inner ring
P > 0,035 C
Shaft diameter ≤ 17 mm j5
Shaft diameter ≥ 20 mm k5 h6 �
P ≤ 0,035 C h7 � h8 � h9 � h10 �
Shaft diameter ≥ 20 mm j6 h11 �

1) The envelope requirement (symbol � from ISO 14405-1) is not shown but applies to all tolerance classes

358