Code of Federal Regulations Title 49. Transportation 49 CFR Pt. 215, App. A—RAILROAD FREIGHT CAR COMPONENTS

List of components whose use is restricted by § 215.203 of this part.

A. Air brakes:

The “K” type.

B. Axles:

1. Former AAR alternate standard tubular type.

2. Axle with letters “RJ” stamped on the end of the journal.

C. Couplers:

1. AAR type “D”, top or bottom operated.

2. AAR type “E” with 5″ by 7″ shank.

D. Draft arrangement:

1. Miner FR–16 and FR–19–F draft gears.

2. Farlow draft attachment.

E. Plain journal bearings:

Cartridge type.

F. Roller bearings:

1. Nippon Sieko Kabushiki Kaish (NSK) size 6 1/2 ″ by 12″ (marked “AAR 11”).

2. Hyatt cylindrical bearing, all sizes (marked “AAR 2”).

3. SKF “Piggybacker” spherical roller, size 6″ by 11″ (marked “AAR 7”).

G. Trucks:

1. Arch bar type.

2. Truck with cast steel pedestal side frame, short wheel base, and no bolster.

H. Truck bolsters:

1. A bolster with one of the following pattern numbers listed according to manufacturer:

2. Bolster cast before 1927.

3. Bolster without an identification mark or pattern number.

I. 1. Truck side frames:

A side frame with one of the following pattern numbers listed according to manufacturer:

2. Side frame cast before 1927.

3. Side frame without an identification mark or pattern number.

4. Side frame with an “I”, “T”, or “L” section compression or tension member.

J. Wheels:

1. Cast iron wheel.

2. Cast steel wheel marked “AAR X–2.”

3. Southern cast steel wheel manufactured before May 7, 1958.

4. Griffin, three-riser cast steel wheel, ball rim design, 70–ton capacity.

5. Griffin, three-riser cast steel wheel, two-wear, 70– and 50–ton capacity, 33 inch, (marked X–5 or CS–2).

6. Wrought steel wheel manufactured before 1927, as indicated by marking on wheel.

7. Cast steel wheel marked AAR X–4.

8. Davis cast steel wheel.

9. One-wear, 70–ton Southern (ABEX) U1 cast steel wheels dated May 7, 1958 through December 31, 1969.

A. Wheels dated May 7, 1958, to January 1, 1964, are marked with the symbol “70T” cast on the back of the wheel plate;  they are not marked “U–1.”

B. Wheels dated January 1, 1964 through December 31, 1969, are marked with the symbols “CJ–33” and “U–1” or “70T” and “U–1” cast on the back of the wheel plate.

K. Yokes:

1. Riveted type.

2. Keyless type.

3. Vertical key type.