ASTM F2246-03

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 E 18). For use with unhardened shafts, bearings should be used in conjunction with inner bearing ring as specified in MS51962 shown as bearing assemblies in MS500072.
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 the standard. The values given in parentheses are provided for information only.
Note 1—This specification contains many of the requirements of MS 51961, which was originally developed and maintained by the Defense Supply Center Richmond.

General Information

• Status: Historical
• Publication Date: 09-May-2003
• ICS: 21.100.20 - Rolling bearings
• Technical Committee: F34 - Rolling Element Bearings
• Drafting Committee: F34.06 - Aerospace

Relations

• Replaced By: ASTM F2246-06 - Standard Specification for Bearing, Roller, Needle: Thick Outer Ring With Rollers and Cage
• Effective Date: 01-Nov-2006
• Referred By: ASTM F2430-04(2018) - Standard Specification for Bearing, Roller, Needle: Assembly (Thick Outer Race)
• Effective Date: 10-May-2003
• Referred By: ASTM F2431-04(2018) - Standard Specification for Ring Bearing, Inner: For Needle Roller Bearing with Thick Outer Ring
• Effective Date: 10-May-2003

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F 2246 – 03
Standard Specification for
Bearing, Roller, Needle: Thick Outer Ring With Rollers and
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Cage
This standard is issued under the fixed designation F 2246; 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 (e) indicates an editorial change since the last revision or reapproval.
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1. Scope 2.4 Military Standards:
MIL-STD-130 Identification Marking of U.S. Military
1.1 This specification covers needle roller bearings having
Property
thick outer rings, with rollers and cages.
MS500072 Bearing, Roller, Needle:Assembly (Thick Outer
1.2 The bearings being specified are intended to be used
Race)
with hardened shafts (HRC58-65; see Test Methods E 18). For
MS51962 Ring Bearing, Inner: For Needle Roller Bearing
use with unhardened shafts, bearings should be used in
with Thick Outer Ring
conjunction with inner bearing ring as specified in MS51962
2.5 American Bearing Manufacturers Association Stan-
shown as bearing assemblies in MS500072.
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dard:
1.3 Theuseofrecycledmaterialsthatmeettherequirements
ABMA 18.1 Needle Roller Bearings Radial, Inch Design
of the applicable material specification without jeopardizing
2.6 International Organization for Standardization Stan-
the intended use of the item is encouraged.
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dards:
1.4 Bearings designed to this specification are intended for
ISO 492 Rolling Bearings—Radial Bearings—Tolerances
use in applications requiring high radial load with minimal
ISO 3096 Rolling Bearings—Needle Rollers—Dimensions
angular shaft misalignment.
and Tolerances
1.5 The values stated in inch-pound units are to be regarded
ISO 5593 Rolling Bearings—Vocabulary
as the standard. The values given in parentheses are provided
for information only.
3. Terminology
NOTE 1—This specification contains many of the requirements of MS
3.1 Definitions—For definitions of terms used in this speci-
51961, which was originally developed and maintained by the Defense
fication, refer to ISO 5593, Rolling Bearings—Vocabulary.
Supply Center Richmond.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 average life (L )—for a radial roller bearing, the
2. Referenced Documents
50
number of revolutions that 50 % of a group of bearings will
2.1 ASTM Standards:
complete or exceed before the first evidence of fatigue devel-
E 18 Test Methods for Rockwell Hardness and Rockwell
ops.
2
Superficial Hardness of Metallic Materials
3.2.1.1 Discussion—The average life is approximately five
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2.2 ANSI Standard:
times the rating life.
ANSI B46.1 Surface Texture (Surface Roughness, Wavi-
3.2.2 basic dynamic load rating (C )—for a radial roller
r
ness, and Lay)
bearing, that calculated, constant radial load that a group of
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2.3 SAE Standards:
apparently identical bearings with stationary outer rings can
SAE J-404 Chemical Compositions of SAE Alloy Steels
theoretically endure for a rating life of one million revolutions
SAEAMS-STD-66 Steel:ChemicalCompositionandHard-
of the inner ring.
enability
3.2.2.1 Discussion—Since applied loading as great as the
basic dynamic load rating tends to cause local plastic defor-
1
mation of the rolling surfaces, it is not anticipated that such
This specification is under the jurisdiction ofASTM Committee F34 on Rolling
Element Bearings and is the direct responsibility of Subcommittee F34.06 on heavy loading would normally be applied.
Aerospace.
Current edition approved May 10, 2003. Published June 2003.
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Annual Book of ASTM Standards, Vol 03.01.
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F2246–03
3.2.3 basic static load rating (C )—for a radial roller 6. Other Requirements
or
bearing, that uniformly distributed static radial load which
6.1 Heat Treatment:
produces a maximum contact stress at the center of the most
6.1.1 Rollers—Rollers shall be through hardened to Rock-
heavily loaded rolling element contact of 580 000 psi (4000
well HRC58-66 in accordance with Test Methods E 18.
Mpa).
6.1.2 Rings:
3.2.3.1 Discussion—For this contact stress, a total perma-
6.1.2.1 Steel 4620, 4720, 8620, 8720, and 1010-1020 shall
nent deformation of roller element plus ra
...