Page 693 - Rollingbearings

Bearing designations
Bearing Inch bearings Fig. 24

designations Inch tapered roller bearing designations are Separately packed components
in accordance with ANSI/ABMA Std 19 2
Within a series:
Metric bearings
• roller and cage assemblies are equal but
The designations of metric tapered roller the inner and outer rings can have differ-
bearings follow one of the following ent sizes and designs
principles: • any inner ring with roller and cage assem-
bly (cone) can be assembled with any
• The series designations in accordance with outer ring (cup)
ISO 355 consist of a digit and two letters
The digit represents the contact angle The General:
two letters represent the diameter and
width series, respectively This is followed • Cup and cone have individual designations
by a three-digit bore diameter d [mm] The and can be supplied separately (ig. 24)
basic designations of SKF tapered roller • The designations of cups and cones, as
bearings start with the letter T, e g well as the series, consist of a three- to
T2ED 045 six-digit number, which may be preixed to
• Designations established prior to 1977 are characterize a bearing series from extra-
based on the system shown under Basic light to extra-heavy
designations, page 31, e g 32206 • The complete bearing designation is an
(table 4, page 30) abbreviated combination of cone and cup
• Metric bearings with the designation preix designations It consists of the cone desig-
J follow the ABMA designation system, nation followed by the complete or parts
which is used for inch bearings (ANSI/ of the cup designation, separated by an
ABMA Std 19 1) oblique stroke (table 11)

8

Table 11
Examples of inch tapered roller bearing designations
Complete bearing Cone Cup Series

LM 11749/710 1) LM 11749 LM 11710 LM 11700
JL 26749/710 1) JL 26749 JL 26710 L 26700
HM 89449/410 1) HM 89449 HM 89410 HM 89400
H 913842/810 1) H 913842 H 913810 H 913800
4580/2/4535/2 2) 4580/2 4535/2 4500
9285/9220 2) 9285 9220 9200

1) Complete bearing designation abbreviated (latest ABMA designations)
2) Complete bearing designation not abbreviated (earlier ABMA designations)

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