[Code of Federal Regulations]

[Title 49, Volume 4]

[Revised as of October 1, 2005]

From the U.S. Government Printing Office via GPO Access

[CITE: 49CFR229.69]



[Page 394]

 

                        TITLE 49--TRANSPORTATION

 

       CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF 

                             TRANSPORTATION

 

PART 229_RAILROAD LOCOMOTIVE SAFETY STANDARDS--Table of Contents

 

                      Subpart C_Safety Requirements

 

Sec. 229.69  Side bearings.



    (a) Friction side bearings with springs designed to carry weight may 

not have more than 25 percent of the springs in any one nest broken.

    (b) Friction side bearings may not be run in contact unless designed 

to carry weight. Maximum clearance of side bearings may not exceed one-

fourth inch on each side or a total of one-half inch on both sides, 

except where more than two side bearings are used under the same rigid 

superstructure. The clearance on one pair of side bearings under the 

same rigid superstructure shall not exceed one-fourth inch on each side 

or a total of one-half inch on both sides; the other side bearings under 

the same rigid superstructure may have one-half inch clearance on each 

side or a total of 1 inch on both sides. These clearances apply where 

the spread of the side bearings is 50 inches or less; where the spread 

is greater, the side bearing clearance may only be increased 

proportionately.