ASTM F2591-06(2022)

Standard Specification for Bearing, Roller, Tapered, Single Row of Rollers (Metric Series)

SCOPE
1.1 This specification covers requirements for metric series, tapered roller bearings with a single row of rollers.  
1.2 Intended Use—The bearings covered in this specification are intended to be used in general industrial and vehicle applications where the operating temperature does not exceed 120 °C (250 °F).  
1.3 This specification contains many of the requirements of DS3225, which was originally developed by the Department of Defense and maintained by the Defense Supply Center in Richmond. The following government activity codes may be found in the Department of Defense, Standardization Directory SD-1.2    
Preparing Activity  
Custodians  
Review Activities  
DLA-GS4  
Army-AT  
Army-AV    
Navy-MC  
Navy –MC, SH  
Air Force-99  
Air Force-84  
Other-NS  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-Dec-2021
• ICS: 21.100.20 - Rolling bearings
• Technical Committee: F34 - Rolling Element Bearings
• Drafting Committee: F34.04 - Automotive/Industrial Bearing

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:F2591 −06 (Reapproved 2022)
Standard Specification for
Bearing, Roller, Tapered, Single Row of Rollers (Metric
Series)
This standard is issued under the fixed designation F2591; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 2. Referenced Documents
1.1 This specification covers requirements for metric series,
2.1 ABMA Standard:
tapered roller bearings with a single row of rollers.
ABMA 19.1 Tapered Roller Bearings—Radial, Metric De-
sign
1.2 Intended Use—The bearings covered in this specifica-
2.2 ISO Standard:
tion are intended to be used in general industrial and vehicle
ISO 5593 Rolling Bearings—Vocabulary
applications where the operating temperature does not exceed
2.3 Military Standard:
120 °C (250 °F).
MIL-C-11796 Corrosion Preventative Compound,
1.3 This specification contains many of the requirements of
Petrolatum, Hot Application
DS3225,whichwasoriginallydevelopedbytheDepartmentof
2.4 SAE Standard:
Defense and maintained by the Defense Supply Center in
SAEAMS-STD-66 Steel: Chemical Composition and Hard-
Richmond. The following government activity codes may be
enability
found in the Department of Defense, Standardization Directory
SD-1.
3. Terminology
Preparing Activity Custodians Review Activities
3.1 Definitions:
DLA-GS4 Army-AT Army-AV
Navy-MC Navy –MC, SH
3.1.1 For definitions of terms used in this specification refer
Air Force-99 Air Force-84
to ISO 5593.
Other-NS
3.1.2 effective load center—dimension (a) locates a point on
1.4 The values stated in SI units are to be regarded as
the inner ring (cone) axis that is the center of pressure of all
standard. No other units of measurement are included in this
resisting forces set up by the bearing rollers. All moments
standard.
should be calculated from this point when determining bearing
1.5 This standard does not purport to address all of the loading and shaft stresses. A minus value of (a) indicates that
safety concerns, if any, associated with its use. It is the
the center is inside the inner ring (cone) backface.
responsibility of the user of this standard to establish appro-
3.1.3 K factor—the K Factor is the ratio of the basic radial
priate safety, health, and environmental practices and deter-
dynamic load rating to the basic static load rating.
mine the applicability of regulatory limitations prior to use.
3.1.4 contact angle—these bearing have a contact angle (α)
1.6 This international standard was developed in accor-
between 10 and 19 degrees. The contact angle is the angle
dance with internationally recognized principles on standard-
between the line of action of the roller load and a plane
ization established in the Decision on Principles for the
perpendicular to the bearing axis.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
4. Ordering Information
Barriers to Trade (TBT) Committee.
4.1 Procurement documents should specify the following:
4.1.1 Title, number, and date of this specification,
ThisspecificationisunderthejurisdictionofASTMCommitteeF34onRolling
Element Bearings and is the direct responsibility of Subcommittee F34.04 on
Automotive/Industrial Bearing. Available fromTechstreet, 777 E. Eisenhower Parkway,AnnArbor , MI 48108.
Current edition approved Jan. 1, 2022. Published January 2022. Originally Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
published in 2006. Last previous edition approved in 2013 as F2591– 06(2013). 4th Floor, New York, NY 10036.
DOI: 10.1520/F2591-06R22. Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
The Military codes that are listed in SD-1 give the address and phone numbers Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
of the DoD contacts. These are found in the DoD’s ASSIST website http:// Available from Society of Automotive Engineers (SAE), 400 Commonwealth
assist.daps.dla.mil/online/start/. Dr., Warrendale, PA 15096-0001.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2591−06 (2022)
4.1.2 Part Number (see 8.1), 8. Part Number
4.1.3 Nominal dimensions of bearing (bore, outside
8.1 Part Number—The Part number shall consist of
diameter, bearing width),
DS3225, followed by the dash number, followed by -K for a
4.1.4 Quantity required,
standard grade bearing or -B for a precision grade bearing.
4.1.5 Inspection records required, and
8.1.1 Examples:
4.1.6 Required packaging.
8.1.1.1 DS3225-15-K is a standard grade, 75 mm bore, 145
5. Materials and Manufacture
mm OD, 51 mm wide single row tapered roller bearing.
5.1 Material:
8.1.1.2 DS3225-15-B is a precision grade, 75 mm bore, 145
5.1.1 Outer Ring (Cup), Inner Ring (Cone) and Rollers
mm OD, 51 mm wide single row tapered roller bearing.
—Bearing quality, carburizing grade alloy or through-
8.1.2 The ABMA (American Bearing Manufacturers Asso-
hardening grade alloy steel in accordance with SAE AMS-
ciation) outer and inner numbers are for reference only and are
STD-66.
not to be used for ordering purposes.
5.1.2 Cage—Carbon steel (stamped) or powdered process
steel (for example, Sinta Forge) may be used.
9. Lubrication
6. Physical Properties
9.1 Lubrication—Unless specified otherwise, bearings shall
6.1 Hardness—Outer ring (cup), inner ring (cone) and
be furnished without lubrication.
rollers shall be hardened to 58 HRC to 64 HRC.
10. Preservation, Packaging and Packing
7. Dimensions, Mass, and Permissible Variations
7.1 Dimensions: 10.1 Packaging and packing shall be as specified in the
7.1.1 Dimensions D ,D,d ,d are recommended shaft and
acquisition document.
b a b a
housing shoulder diameters.
10.2 Preservation:
7.1.2 Dimensions R and r are the maximum fillet radii on
10.2.1 Commercial Use—Manufacturer shall coat bearing
theshaftandthehousingrespectively,whichwillbeclearedby
with rust preventative film.
the bearing corner. See Fig. 1 and Table 1.
10.2.2 DoD Use—Unlessspecifiedotherwise,bearingsshall
7.2 Tolerances—Precision grade (Class B) shall be specified
be furnished with preservative in accordance with MIL-C-
only when technically justified.
11796, Class 3.
7.2.1 Standard Grade (Class K)—See Tables 2-5.
7.2.2 Precision Grade (Class B)—See Tables 6-9.
11. Keywords
7.3 Cage Clearance—Designersshouldprovideaclearance
11.1 bearing; DS3225; single row bearing; tapered roller
of 3.2 mm minimum between the outside edge of the cage and
the housing counterbore. bearing
FIG. 1Schematic Drawing, Metric Series, Single Row, Tapered Roller Bearing
F2591−06 (2022)
TABLE 1 Metric Series, Single Row, Tapered Roller Bearing Dimensions
Basic
dD T B C R r d d D D a
ABMA b a b a
Dynamic
Bearing Number
Max. Max.
Dash K
Recommended
Load Rating
Inner Outer Eff.
(see 8.1)
Brg. Shaft Hsg.
No. Factor
Shoulder Dia
...