ASTM F2246-06(2022)
(Specification)Standard Specification for Bearing, Roller, Needle: Thick Outer Ring With Rollers and Cage
Standard Specification for Bearing, Roller, Needle: Thick Outer Ring With Rollers and Cage
SCOPE
1.1 This specification covers needle roller bearings having thick outer rings, with rollers and cages.
1.2 The bearings being specified are intended to be used with hardened shafts (HRC58-65; see Test Methods E18). For use with unhardened shafts, bearings should be used in conjunction with inner bearing ring MS51962 as specified in Specification F2431 and shown as MS500072 bearing assemblies in Specification F2430.
1.3 The use of recycled materials that meet the requirements of the applicable material specification without jeopardizing the intended use of the item is encouraged.
1.4 Bearings designed to this specification are intended for use in applications requiring high radial load with minimal angular shaft misalignment.
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
Note 1: This specification contains many of the requirements of MS51961 which was originally developed by the Department of Defense and maintained by the Defense Supply Center Richmond.
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
Relations
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:F2246 −06 (Reapproved 2022)
Standard Specification for
Bearing, Roller, Needle: Thick Outer Ring With Rollers and
Cage
This standard is issued under the fixed designation F2246; 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 needle roller bearings having
2.1 ASTM Standards:
thick outer rings, with rollers and cages.
E18 Test Methods for Rockwell Hardness of Metallic Ma-
1.2 The bearings being specified are intended to be used terials
F2430 Specification for Bearing, Roller, Needle: Assembly
with hardened shafts (HRC58-65; see Test Methods E18). For
use with unhardened shafts, bearings should be used in (Thick Outer Race)
conjunction with inner bearing ring MS51962 as specified in F2431 Specification for Ring Bearing, Inner: For Needle
Specification F2431 and shown as MS500072 bearing assem-
Roller Bearing with Thick Outer Ring
blies in Specification F2430. 3
2.2 ANSI Standard:
1.3 Theuseofrecycledmaterialsthatmeettherequirements
ANSIB46.1 SurfaceTexture(SurfaceRoughness,Waviness,
of the applicable material specification without jeopardizing
and Lay)
the intended use of the item is encouraged.
2.3 SAE Standards:
1.4 Bearings designed to this specification are intended for
SAE J-404 Chemical Compositions of SAE Alloy Steels
use in applications requiring high radial load with minimal
SAEAMS-STD-66 Steel: Chemical Composition and Hard-
angular shaft misalignment.
enability
1.5 The values stated in inch-pound units are to be regarded
2.4 Military Standards:
as standard. The values given in parentheses are mathematical
MIL-STD-130 Identification Marking of U.S. Military Prop-
conversions to SI units that are provided for information only
erty
and are not considered standard.
MS500072 Bearing, Roller, Needle:Assembly (Thick Outer
NOTE 1—This specification contains many of the requirements of
Race)
MS51961 which was originally developed by the Department of Defense
MS51961 Bearing, Roller, Needle: Thick Outer Ring with
and maintained by the Defense Supply Center Richmond.
Rollers and Cage
1.6 This international standard was developed in accor-
MS51962 Ring Bearing, Inner: For Needle Roller Bearing
dance with internationally recognized principles on standard-
with Thick Outer Ring
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
1 3
This specification is under the jurisdiction ofASTM Committee F34 on Rolling Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
Element Bearings and is the direct responsibility of Subcommittee F34.04 on 4th Floor, New York, NY 10036.
Automotive/Industrial Bearing. Available from Society of Automotive Engineers (SAE), 400 Commonwealth
Current edition approved Jan. 1, 2022. Published August 2022. Originally Dr., Warrendale, PA 15096-0001.
approved in 2003. Last previous edition approved in 2013 as F2246 – 06(2013). Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
DOI: 10.1520/F2246-06R22. Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2246−06 (2022)
2.5 American Bearing Manufacturers Association Stan-
dard:
ABMA 18.1 Needle Roller Bearings Radial, Inch Design
2.6 International Organization for Standardization Stan-
dards:
ISO 492 Rolling Bearings—Radial Bearings—Tolerances
ISO 3096 Rolling Bearings—Needle Rollers—Dimensions
and Tolerances
ISO 5593 Rolling Bearings—Vocabulary
3. Terminology
3.1 Definitions—For definitions of terms used in this
specification, refer to ISO 5593, Rolling Bearings—
Vocabulary.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 average life (L )—for a radial roller bearing, the
number of revolutions that 50 % of a group of bearings will
complete or exceed before the first evidence of fatigue devel-
FIG. 1Schematic Drawing—Roller Bearing
ops.
3.2.1.1 Discussion—The average life is approximately five
times the rating life.
3.2.2 basic dynamic load rating (C ) —for a radial roller 4.1.3.4 Radius, in. (mm),
r
4.1.4 Load rating, including basic static load rating, lb (N)
bearing, that calculated, constant radial load that a group of
apparently identical bearings with stationary outer rings can and basic dynamic load rating, lb (N), and
4.1.5 Approximate limiting speed, rpm.
theoretically endure for a rating life of one million revolutions
of the inner ring.
5. Materials and Manufacture
3.2.2.1 Discussion—Since applied loading as great as the
basic dynamic load rating tends to cause local plastic defor-
5.1 Rollers—Rollers shall be manufactured of steel, alloy,
mation of the rolling surfaces, it is not anticipated that such
grade E50100, E51100 or E52100 in accordance with SAE
heavy loading would normally be applied.
AMS-STD-66 or SAE J-404.
3.2.3 basic static load rating (C ) —for a radial roller
or
5.2 Rings—Rings shall be manufactured of steel, alloy or
bearing, that uniformly distributed static radial load which
carbon, carburizing grade 4620, 4720, 8620, 8720, or 1010-
produces a maximum contact stress at the center of the most
1020 in accordance with SAEAMS-STD-66 or SAE 51100 or
heavily loaded rolling element contact of 580 000 psi (4000
SAE 52100 in accordance with SAE J-404.
Mpa).
5.3 Cages—Cages shall be manufactured of steel, brass, or
3.2.3.1 Discussion—For this contact stress, a total perma-
bronze, or other material in accordance with manufacturer’s
nent deformation of roller element plus raceway occurs, which
standards.
is approximately 0.0001 of the roller diameter.
3.2.4 rating life (L )—for a radial roller bearing, the
6. Other Requirements
number of revolutions that 90 % of a group of bearings will
6.1 Heat Treatment:
complete or exceed before the first evidence of fatigue devel-
6.1.1 Rollers—Rollers shall be through hardened to Rock-
ops.
well HRC58-66 in accordance with Test Methods E18.
6.1.2 Rings:
4. Ordering Information
6.1.2.1 Steel 4620, 4720, 8620, 8720, and 1010-1020 shall
4.1 When ordering parts in accordance with this
be case hardened to Rockwell HRC58-65, in accordance with
specification, specify the following:
Test Methods E18. Case depth shall be 0.025 in. (0.64 mm)
4.1.1 ASTM designation number, including year of issue,
minimum.
4.1.2 Dash number (see Table 1),
6.1.2.2 Steel SAE 51100 and SAE 52100 shall be through
4.1.3 Dimensions of roller bearings, including:
hardened to Rockwell HRC58-65, in accordance with Test
4.1.3.1 Bore diameter, in. (mm),
Methods E18.
4.1.3.2 Outside diameter, in. (mm),
6.2 Protective Coating:
4.1.3.3 Width, in. (mm), and
6.2.1 Bearings shall be furnished without plating.
6.2.2 Manufacturer shall coat bearings with rust preventive
Available from Techstreet, 1327 Jones Drive, Ann Arbor, MI 48105. film.
Available from International Organization for Standardization (ISO), ISO
6.3 Lubrication—Bearings shall be furnished without lubri-
Central Secretariat, Chemin de Blandonnet 8, CP 401, 1214 Vernier, Geneva,
Switzerland, https://www.iso.org. cation.
F2246−06 (2022)
TABLE 1 Roller Bearing Dimensions
F D
w C
Dash Radius, Basic Static Basic Dynamic Approx. Limiting
Bore Diameter, in. Outside Diameter, in.
Width, in.,
Number in. (see 7.4) Load Rating, lb Load Rating, lb Speed, rpm
+0.000, -0.005
Nom. Min. Max. Nom. Min. Max.
5 1
-1 ⁄8 0.6258 0.6267 1 ⁄8 1.1245 1.1250 0.750 0.025 2520 2980 30200
3 1
-2 ⁄4 0.7509 0.7518 1 ⁄4 1.2495 1.2500 0.750 0.040 2540 3180 24600
3 1
-3 ⁄4 0.7509 0.7518 1 ⁄4 1.2495 1.2500 1.000 0.040 4120 4350 24600
15 5
-4 ⁄16 0.8131 0.8143 1 ⁄16 1.3120 1.3125 0.750 0.040 2680 3210 22600
7 3
-5 ⁄8 0.8759 0.8768 1 ⁄8 1.3745 1.3750 0.750 0.040 3210 3540 20700
7 3
-6 ⁄8 0.8759 0.8768 1 ⁄8 1.3745 1.3750 1.000 0.040 4810 4860 20700
15 7
-7 ⁄16 0.9384 0.9393 1 ⁄16 1.4370 1.4375 0.750 0.040 3280 3590 20000
-8 1 1.0009 1.0018 1 ⁄2 1.4995 1.5000 0.750 0.040 3670 3830 19200
-9 1 1.0009 1.0018 1 ⁄2 1.4995 1.5000 1.000 0.040 5500 5250 19200
1 9
-10 1 ⁄16 1.0634 1.0643 1 ⁄16 1.5620 1.5
...
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