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ASTM B438-13
Standard Specification for Bronze-Base Powder Metallurgy (PM) Bearings (Oil-Impregnated)
STANDARD published on 1.4.2013
The information about the standard:
Designation standards: ASTM B438-13
Note: WITHDRAWN
Publication date standards: 1.4.2013
SKU: NS-6689
The number of pages: 27
Approximate weight : 81 g (0.18 lbs)
Country: American technical standard
Category: Technical standards ASTM
The category - similar standards:
Annotation of standard text ASTM B438-13 :
Keywords:
bearing breaking load, bronze bearings, impregnated density, interconnected porosity, oil content, oil-impregnated bearings, open porosity, porous metallic bearings, radial crushing strength, self-lubricating bearings, PM bearings, PV Factor, PV Limit, ICS Number Code 21.100.01 (Bearings in general)
Additional information
| 1. Scope | ||||||||||||||||||||||||||||||||||||||||||||
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1.1 This specification covers porous metallic sleeve, flange, thrust and spherical bronze-base bearings that are produced from mixed metal powders utilizing powder metallurgy (PM) technology and then impregnated with oil to supply operating lubrication. 1.2 Included are the specifications for the chemical, physical and mechanical requirements of those bronze-base PM materials that have been developed and standardized specifically for use in the manufacture of these self-lubricating bearings. 1.3 This specification is applicable to the purchase of bronze-base bearings (oil-impregnated) that were formerly covered by military specifications and are intended for government or military applications. Those additional government requirements that only apply to military bearings are listed in the Supplementary Requirements section of this specification. 1.4 This specification accompanies Specification B439 that covers the requirements for Iron-Base Powder Metallurgy (PM) Bearings, (Oil-Impregnated). 1.5 Typical applications for bronze-base bearings are listed in Appendix X1. 1.6 Bearing dimensional tolerance data are shown in 1.7 With the exception of density values for which the g/cm3 unit is the industry standard, 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. 1.8 The following safety hazards caveat pertains only to the test methods described in this specification. 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 and health practices and determine the applicability of regulatory limitations prior to use. |
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| 2. Referenced Documents | ||||||||||||||||||||||||||||||||||||||||||||
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