ASTM-B438 2005
$40.63
B438/B438M-05 Specification for Bronze Powder Metallurgy (P/M) Bearing (Oil-Impregnated)
| Published By | Publication Date | Number of Pages |
| ASTM | 2005 | 10 |
ASTM B438/B438M-05
Historical Standard: Specification for Bronze Powder Metallurgy (P/M) Bearing (Oil-Impregnated)
ASTM B438/B438M
Scope
1.1 This specification covers sintered bronze, oil-impregnated bearings made primarily from elemental copper, tin, lead, and graphite powders. The manufacturer may, at his discretion, use prealloyed bronze powder in the mixed powder.
1.2 This specification covers the following variables:
1.2.1 GradesAvailable in three bronze base compositions identifiable by different graphite contents and one leaded bronze grade.
1.2.2 TypeGrades 1 and 2 are available in four types described by specific density ranges. Grade 3 is available in two types and Grade 4 is available in one type.
1.3 Bearings ordered to this specification will normally be sized after sintering and will be impregnated with a lubricating oil unless otherwise specified by the print.
1.4 The values stated in either inch-pound or SI units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with this specification.
1.5 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.
Keywords
bearing breaking load; density; K, radial crushing strength, porous metallic bearings, strength constant; oil content; oil-impregnated bearings; P/M bearings; porosity
ICS Code
ICS Number Code 21.100.01 (Bearings in general)
DOI: 10.1520/B0438_B0438M-05
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | Scope Referenced Documents Ordering Information Materials and Manufacture |
| 2 | Chemical Composition Physical Properties Mechanical Properties TABLE 1 TABLE 2 TABLE 3 TABLE 4 TABLE 5 |
| 3 | Chemical Analysis Dimensions and Tolerances Workmanship, Finish, and Appearance Sampling Inspection Rejection Certification Supplementary Requirements |
| 4 | Keywords X1. EXPLANATORY INFORMATION X1.1 Design Information X1.2 Permissible Loads X1.3 Dimensional Tolerances TABLE X1.1 |
| 5 | X1.4 Press Fits X1.5 Running Clearance TABLE X1.2 FIG. X1.1 FIG. X1.2 FIG. X1.3 TABLE X1.3 |
| 6 | X1.6 Flange and Thrust Bearing Specifications X1.7 Lubricating Oil-Impregnant TABLE X1.4 TABLE X1.5 |
| 7 | X2. MILITARY BEARING, SLEEVE, FLANGED, SINTERED BRONZE, OIL IMPREGNATED X2.1 Requirements X2.2 Notes TABLE X2.1 |
| 10 | X3. RELATED MATERIALS X3.1 MPIF Standard X3.2 ISO Standards |
