ASTM F3131-14(2023)

Standard Specification for Epoxy / Cotton Raw Materials for the Use in Bearing Cages

ABSTRACT
This specification covers basic characteristics required for porous laminated epoxy materials intended for use as instrument and thin-section ball-bearing retainers (cages), as well as the methods of determining these characteristics. It provides guidance with respect to material and test conditioning, performance, verification, and packaging and package marking.
SCOPE
1.1 This specification covers basic characteristics required for porous laminated Epoxy materials intended for use as instrument and thin-section ball-bearing retainers (cages) and the methods of determining these characteristics.  
1.2 Forms—Sheets and Rolled Tubes are recommended forms of laminated material covered by this specification.  
1.3 Intended Use—Materials produced to this specification are intended for use as ball bearing retainers (cages). Temperature range is limited to 284 °F (140 °C) and below.  
1.4 Units—The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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-2022
• ICS: 21.100.20 - Rolling bearings
• Technical Committee: F34 - Rolling Element Bearings
• Drafting Committee: F34.06 - Aerospace

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:F3131 −14 (Reapproved 2023)
Standard Specification for
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Epoxy / Cotton Raw Materials for the Use in Bearing Cages
This standard is issued under the fixed designation F3131; 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.
1. Scope D695 Test Method for Compressive Properties of Rigid
Plastics
1.1 This specification covers basic characteristics required
D790 Test Methods for Flexural Properties of Unreinforced
for porous laminated Epoxy materials intended for use as
and Reinforced Plastics and Electrical Insulating Materi-
instrument and thin-section ball-bearing retainers (cages) and
als
the methods of determining these characteristics.
D792 Test Methods for Density and Specific Gravity (Rela-
1.2 Forms—Sheets and Rolled Tubes are recommended
tive Density) of Plastics by Displacement
forms of laminated material covered by this specification.
D2257 Test Method for Extractable Matter in Textiles
1.3 Intended Use—Materials produced to this specification E1640 Test Method for Assignment of the Glass Transition
Temperature By Dynamic Mechanical Analysis
are intended for use as ball bearing retainers (cages). Tempera-
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ture range is limited to 284 °F (140 °C) and below.
2.2 ANSI/ASQC Standards:
ANSI/ASQC Z1.4 Sampling Procedures and Tables for In-
1.4 Units—The values stated in inch-pound units are to be
spection by Attributes
regarded as the standard. The values given in parentheses are
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mathematical conversions to SI units that are provided for 2.3 Federal Standard:
information only and are not considered standard. MIL-STD-129 Military Making for Shipment and Storage
1.5 This standard does not purport to address all of the
3. Material and Test Conditioning
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 3.1 Material Conditioning Prior to Tests: (designation as
priate safety, health, and environmental practices and deter- follows)
mine the applicability of regulatory limitations prior to use. 3.1.1 Anumber indicating in degrees Celsius the condition-
1.6 This international standard was developed in accor- ing temperature, or
dance with internationally recognized principles on standard- 3.1.2 A number indicating relative humidity, whenever hu-
ization established in the Decision on Principles for the midity is controlled, or a word to indicate immersion in liquid.
Development of International Standards, Guides and Recom-
3.2 The numbers shall be separated from each other by a
mendations issued by the World Trade Organization Technical
slant marks. A sequence of conditions shall be denoted by use
Barriers to Trade (TBT) Committee.
of a plus (+) sign between successive conditions. “Des” shall
be used to indicate desiccation over anhydrous calcium chlo-
2. Referenced Documents
ride. A capital letter “T” (test condition) following the prior
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2.1 ASTM Standards: material conditioning designation shall be separated by a
D618 Practice for Conditioning Plastics for Testing colon, with the testing condition noted in the same format as
D229 Test Methods for Rigid Sheet and Plate Materials the material conditioning. Temperature and relative humidity
Used for Electrical Insulation tolerancesshallbeinaccordancewithPracticeD618Section7,
D570 Test Method for Water Absorption of Plastics unless otherwise specified.
3.2.1 Examples:
3.2.1.1 C-96/35/90—Humidityconditioning–96hat95 °F,
(35 °C) and 90 % relative humidity.
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This specification is under the jurisdiction ofASTM Committee F34 on Rolling
Element Bearings and is the direct responsibility of Subcommittee F34.06 on 3.2.1.2 E-48/50—Temperature conditioning – 48 h at
Aerospace.
122 °F, (50 °C).
Current edition approved Jan. 1, 2023. Published January 2023. Originally
approved in 2014. Last previous edition approved in 2014 as F3131 – 14. DOI:
10.1520/F3131-14R23.
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