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INTERNATIONAL
9628
STANDARD
First edition
1992-12-15
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Rolling bearings - Insert bearings and eccentric
locking collars
Roulements --- Roulements “insert” et bagues de blocage excentriques
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Reference number
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_-- _ l---_.-_ _. -- ISO 9628: 1992(E)
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ISO 9628:1992(E)
Foreword
ISO (the International Qrganization for Standardization) is a worldwide
federation of national Standards bodies (ISO member bodies). The work
of preparing International Standards is normally carried out through ISO
technical committees. Esch member body interested in a subject for
which a technical committee has been established has the right to be
represented on that committee. International organizations, govern-
mental and non-governmental, in liaison with ISO, also take pati in the
work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters sf electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an lnter-
national Standard requires approval by at least 75 % sf the member
bodies casting a vote.
International Standard ISO 9628 was prepared by Technical Committee
ISQITC 4, Rolling beanngs, Sub-Committee SC 6, Insert bearings and
accessories.
This first edition cancels and replaces ISO 2264:1972 and ISO 3145:1974,
of which it constitutes a technical revision.
0 ISO 1992
All rights reserved. No part of this publication may be reproduced or utilized in any form
or by any means, electronie or mechanical, including photocopying and microfilm, without
permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 * Switzerland
Printed in Switzerland
ii
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ISO 9628:1992(E)
INTERNATIONAL STANDARD
Rolling bearings - Insert bearings and eccentric locking
collars
n width of inner ring eccentric surface
1 Scope
width of collar eccentric surface
4
This International Standard specifies the charac-
teristics, boundary dimensions, tolerantes and ra-
deviation of a Single collar eccentric sur-
4s
dial internal clearances of insert bearings and
face width of eccentric locking collar
eccentric locking collars.
ß width of inner ring
NOTE 1 An insert bearing is defined as a radial rolling
ß Overall inner ring width including eccen-
bearing with a spherical outside surface and an extended
1
inner ring with a locking device (see ISO 5593). The lock- tric locking collar
ing device, for fixing the inner ring to the shaft, may be
an eccentric locking collar or set screws either in a con- B width of eccentric locking collar
2
centric collar around the inner ring or directly in the inner
AB deviation sf a Single collar width of ec-
ring.
2s
centric locking collar
c -, width of outer ring
2 Normative references
7
c- distance from centre of outer ring to
-‘Zl
The following Standards contain provisions which,
centre of Iubrication Zone
through reference in this text, constitute provisions
of this International Standard. At the time of publi-
width of lubrication Zone
cation, the editions indicated were valid. All stan-
bore diameter of bearing and eccentric
dards are subject to revision, and Parties to
agreements based on this International Standard locking collar
are encouraged to investigate the possibility of ap-
Ad deviation sf mean bearing bore diameter
plying the most recent editions of the Standards in- t71 p
in a Single plane
dicated below. Members of IEC and ISO maintain
registers of currently valid International Standards.
Variation of bearing bore diameter in a
Y.! p
Single radial plane
ISO 153 981, RoNng bearings - Radial bearings ---
Boundary dimensions - General plan.
deviation of Single bore diameter of ec-
Ad
S
centric locking collat
ISO 5593:1984, Rotling bearings -- Vocabuiary.
d outside diameter of eccentric locking
1
collar
3 Definitions
d small bore diameter of eccentric surface
2
(at theoretical sharp corner) of eccentric
For the purposes of this International Standard, the
locking collar
definitions given in ISO 5593 apply.
Ad deviation of Single small bore diameter
2s
of eccentric surface of eccentric locking
4 Symbols
collar
NOTE 2 The Symbols (except those for tolerantes)
d Iarge diameter of inner ring eccentric
3
shown in the figures and given in the tables denote nom-
surface (at theoretical sharp corner)
inal dimensions unless otherwise specified.
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ISO 9628:1992(E)
11 outside diarneter of bearing
Contrary to general rolling bearing practice, the
bore tolerante is an the plus side of the nominal
??
eccentricity
bore diameter, in Order that the bearing and collar
rnay be slipped over Standard shafting.
Al& eccentricity deviation in a Single radial
plane
chamfer dimension of inner ring eccen-
5.3 Outside diameter
tric surface
The outside diameter corresponds (with respect to
smallest Single chamfer dimension of
?s min
the metric bore diameter) to the diameter series 2
inner ring eccentric surface
of ISO 15.
fillet radius of inner ring eccentric sur-
face
5.4 lnner ring width and locking devices
Iargest Single fillet radius of inner ring
r2s max
eccentric surface
The inner ring width does not conform to the re-
quirements of ISO 15. lt is determined by the re-
fillet radius of collar eccentric surface
y3
quirements of space for sealing and locking devices
Iargest Single fillet radius of collar ec- and by the axial extension of the shaft support con-
r3s max
sidered suitable for various applications.
centric surface
Where the locking device extends axially beyond the
chamfer dimension of collar eccentric
inner ring, the width over the locking device, called
surface
the overall width, and the location with respect to
smallest Single chamfer dimension sf
the outer ring centreline of the side surface Iimiting
r4s min
collar eccentric surface
the Overall width, are important dimensions and are
therefore specified in this International Standard.
distance from centre of raceway to inner
ring face on side opposite the Iscking
J-f-jr,, sa~rjes of sveral% bjfidths, Ucsjgnate--j vdjd+z,
device
intermedkte and narro;v, are given. Eacis sf the fig-
lHY?s 1 to 4 Shows or1e exampae onbj sf IockPng de-
distance from centre of racewav to ttE
vice design.
face 04’ inner ring or Iocking coiiar $i~-#-
ing the overall bearing width on the
NOTE 3 The figures are dra~+4*1 schen~atically and seaL
locking device side.
ing devices are not shown.
5.5 Width sf outer ring
5 Characteristics
For bearings with spherical outside surface, the
width of the outer ring is not important provided the
range of width is known so that assembly Slots in the
5.1 General housing may be properly dimensioned. This Inter-
national Standard therefore gives outer ring widths
which range from a minimum that conforms to di-
The bearings on one shaft are as a rule mounted in
mension series 02 in ISO 15 to a maximum that
two or more separate housings, which are not al-
provides sufficient space for various Seals and lu-
ways perfectly aligned. The outer ring has a spheri-
brication holes.
cal outside surface so that the bearing may be
mounted in a housing with a matthing spherical
seating to provide correct initial alignment.
5.6 Relubrication
The bore s urface may be plated to reduce corrosion
Depending on the application, these bearings are
during ope ration.
supplied with or without means for relubrication, for
example one or several small radial holes drilled
through the outer ring. The exact design or location
5.2 Bore diameter
of such means is not specified in this International
Standard. lt gives only the width and location of a
To each bearing and eccentric locking collar size
zone which any relubrication means, provided on
there is related one bore in millimetres and one or
one or both sides of the outer ring, should intersect
several bores in inches. The non-preferred inch in such a way that lubricant will satisfactorily feed
bores, which are shown in parentheses in tables 1 into the bearing from the housing bore groove
to 3, should be avoided wherever possible.
covering the Zone.
2
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ISO 9628:1992(E)
C
a
S
1
a Figure 2 - Bearing with concentric locking collar
Intermediate Overall width
around the inner ring -
(see table 2)
B
1
-~-__ _.__. _ _-- - -- - - 4
- Bearing with eccentric locking collar -
Figure 1
Wide Overall width (see table 1)
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ISO 9628:1992(E)
Figure 4 - Bearing with eccentric locking collar -
Narrow Overall width (see table 3)
Figure 3 - Bearing with set screws in the inner
ring - Intermediate Overall width (see table 2)
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ISO 9628:1992(E)
X
rl
Figure 5 - Inner ring eccentric extension (see table 4)
1
Y--l-
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X
1
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f
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e
c
f
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NOTE - The relative angular position of the plain and tapped holes to each other and to the eccentricity is optional.
Eccentric locking collar (see table 5)
Figure 6 -
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ISO 9628:1992(E)
Table 1 - Insert bearings - Diameter series 2 - Wide Overall width - Axially extending eccentric locking
collar (see figure 1)
d A.
( v
SI
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