Transcription of AAR Manual of Standards and Recommended Practices …
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AAR Manual of Standards and Recommended Practices …
IMPLEMENTED 02/201201/2012H [M-942] 1 AAR Manual of Standards and Recommended PracticesJournal Bearings and LubricationM-942 JOURNAL ROLLER BEARING GREASES pecification M-942 Adopted: 1975; Last Revised: SCOPEThis specification covers the lubrication of grease-filled freight car roller bearing/grease seal com-binations that are not lubricated in the field. Lubrication grease used in current interchange ser-vice shall be formulated for a minimum life of 500,000 miles. The Wheels, Axles, Bearings, and Lubrication Committee (hereafter referred to as the Committee) shall approve any grease pro-posed for use in freight car roller bearings (Specification M-934) for interchange APPROVAL individual desiring certification of roller bearing grease shall make written application to the AAR.
IMPLEMENTED 02/2012 01/2012 H [M-942] 5 AAR Manual of Standards and Recommended Practices Journal Bearings and Lubrication M-942 APPENDIX A 3.2 Bearing Application 3.2.1 Ensure that the interference fit of the stub axle journal and bearing is between .0025 in. to .003 in. Coat the axle stub with an acceptable lubr icant and apply the bearing.
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