{"id":117793,"date":"2024-10-19T03:44:12","date_gmt":"2024-10-19T03:44:12","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-b439-2008-2\/"},"modified":"2024-10-24T22:35:54","modified_gmt":"2024-10-24T22:35:54","slug":"astm-b439-2008-2","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-b439-2008-2\/","title":{"rendered":"ASTM-B439 2008"},"content":{"rendered":"<\/p>\n

1.1 This specification covers porous metallic sleeve, flange, thrust, and spherical iron-base bearings that are produced from mixed metal powder utilizing powder metallurgy (PM) technology and then impregnated with oil to supply operating lubrication.<\/p>\n

1.2 Included are the specifications for the chemical, physical, and mechanical requirements of those ferrous PM materials that have been developed and standardized specifically for use in the manufacture of these self-lubricating bearings.<\/p>\n

1.3 This specification accompanies Specification B 438\/B 438M that covers the requirements for Bronze-Base Powder Metallurgy (PM) Bearings (Oil-Impregnated).<\/p>\n

1.4 Typical applications for iron-base bearings are discussed in Appendix X1.<\/p>\n

1.5 Commercial bearing dimensional tolerance data are shown in Appendix X2, while engineering information regarding installation and operating parameters of PM bearings is included in Appendix X3. Additional useful information on self-lubricating bearings can be found in MPIF Standard 35 (Bearings) and the technical literature.<\/p>\n

1.6 With the exception of density values for which the g\/cm 3<\/sup> unit is the industry standard, the values stated in inch-pound units are to be regarded as standard. The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.<\/p>\n

1.7 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.<\/span><\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nScope
Referenced Documents <\/td>\n<\/tr>\n
2<\/td>\nTerminology
Classification
Ordering Information
Materials and Manufacture
Chemical Composition
Physical Properties
Mechanical Properties <\/td>\n<\/tr>\n
3<\/td>\nDimensions, Mass, and Permissible Variations
TABLE 1
FIG. 1
FIG. 2
FIG. 3
FIG. 4 <\/td>\n<\/tr>\n
4<\/td>\nWorkmanship, Finish and Appearance
Sampling
Test Methods <\/td>\n<\/tr>\n
6<\/td>\nInspection
Rejection and Rehearing
Certification and Test Report
Packaging
Keywords
A1. PM MATERIAL DESIGNATION CODE
A1.1 Introduction <\/td>\n<\/tr>\n
7<\/td>\nA1.2 Prefix Material Letter Code
A1.3 Four-Digit Chemical Composition Code
A1.4 Minimum Strength Suffix Code
A1.5 Data Source
A2. CROSS INDEX OF BEARING MATERIALS
A2.1
TABLE A1.1
FIG. A1.1
TABLE A1.2 <\/td>\n<\/tr>\n
8<\/td>\nX1. IRON-BASE PM BEARINGS\u2014APPLICATIONS
X1.1 Introduction
X1.2 Iron Material
X1.3 Iron-Carbon Materials
X1.4 Iron-Copper Materials
X1.5 Iron-Copper-Carbon Materials
X1.6 Iron-Bronze-Graphite Materials
X1.7 Iron-Graphite Materials
TABLE A2.1 <\/td>\n<\/tr>\n
9<\/td>\nX2. IRON-BASE PM BEARINGS\u2014COMMERCIAL TOLERANCES
X2.1 Introduction
X2.2 Sleeve Bearing Tolerances
X2.3 Flange Bearing Tolerances
X2.4 Thrust Washer Tolerances
X2.5 Spherical Bearing Tolerances
TABLE X2.1 <\/td>\n<\/tr>\n
10<\/td>\nTABLE X2.2
TABLE X2.3
TABLE X2.4 <\/td>\n<\/tr>\n
11<\/td>\nX3. IRON-BASE PM BEARINGS\u2014ENGINEERING INFORMATION
X3.1 Introduction
X3.2 Compressive Yield Strength
X3.3 Bearing Loading and Speeds
TABLE X2.5 <\/td>\n<\/tr>\n
12<\/td>\nX3.4 Pressure\/Velocity (PV) Factor
X3.5 Installation
X3.6 Running Clearance
X3.7 Bearing Life
X3.8 Technical Support
X4. PM BEARINGS\u2014ADDITIONAL INFORMATION
X4.1 MPIF Standard
X4.2 Metric Bearings
TABLE X3.1
TABLE X3.2 <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

B439-08 Standard Specification for Iron-Base Powder Metallurgy (PM) Bearings (Oil-Impregnated)<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASTM<\/b><\/a><\/td>\n2008<\/td>\n13<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":117794,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[315,2637],"product_tag":[],"class_list":{"0":"post-117793","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-21-100-10","7":"product_cat-astm","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/117793","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/117794"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=117793"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=117793"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=117793"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}