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IS0
I NT ERN AT1 ON A L ORGAN If AT1 ON FOR STA N DA RD lZ ATlON
IS0
R 199
[//
ROLLING BEARINGS
THRUST BALL BEARINGS WITH FLAT SEATS
TO LE RANCES
PART 2
TOLERANCE CLASSES 6, 5 AND 4
1st EDITION
September 1968
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belongs to IS0 Member Bodies. Reproduction of these
documents, in any country, may be authorized therefore only
by the national standards organization of that country, being
a member of ISO.
For each individual country the only valid standard is the national standard of that country.
in Switzerland
Printed
Also issued in French and Russian.
Copies to be obtained through the national standards organizations.
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ISO/R 199/11-1968 (I
IS0 Recommendation R 199 September 1968
ROLL I NG BEAR I NGS
THRUST BALL BEARINGS WITH FLAT SEATS
TOLERANCES
PART 2
--
TOLERANCE CLASSES 6, 5 AND 4
1. SCOPE
1.1 This IS0 Recommendation applies to the tolerances of thrust ball bearings with flat seats
-
tolerance classes 6 and 5 for bore diameters up to and including 1250 mm, given
in Table 1, and
-
tolerance class 4 for bore diameters up to and including 800 mm, given in Table 3.
1.2 The housing washer outside diameter tolerances are those given for the normal tolerance class
in IS0 Recommendation R 199, Rolling bearings - Thrust ball bearings with flat seats ~
Normal tolerances,
1.3 The cylindrical bore diameter “not go side” tolerance limit does not necessarily apply within a
e
distance of twice the nominal washer chamfer dimension from the washer face.
2. SYMBOL
I
The following symbol is used in the Tables :
d = bore diameter of shaft washer of single and double direction thrust ball bearings.
I
-2-
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ISO/R 199/11-1968 (E
3. TOLERANCES
TABLE 1 - Tolerance classes 6 and 5
Deviations in microns
~~
Shaft washer Au washers
Bore diameter
Raceway run-out with
d
Deviations from
seat face of washer**
nominal
nominal bore diameter*
class 5
class 6
millimetres
incl. maximum
over high 10 w maximum
18 O -8 5 3
3
30 O - 10 5
3
50 O - 12 6
4
80 O - 15 7
120 8 4
O -
...