Product name | Railway E50BE knuckle |
Material | AAR M-210 Grade E steel |
Type | E-Knuckle E50BEV |
Average fatigue life | ≥1,000,000 cycles. |
Standard | AAR M-216, AAR M-215 |
Usage | All E and E/F couplers |
Process | Casting |
Package | Standard Packing |
Product Features | High Strength Structure |
Application | Railroad Car, Wagon coupler knuckle |

A knuckle for a railway car coupler system comprising a front face generally opposite a pulling face; a cast utility hole extending into a top surface of the knuckle; a pivot pin hole extending from a top surface of the knuckle to a bottom surface of the knuckle; and a tail portion. The knuckle is free of internal voids and its front portion has a plurality of ribs defining front external weight reduction pockets. The tail portion has a second plurality of ribs defining rear external weight reduction pockets. Further, the knuckle is produced by investment casting to create a smoother pulling face, free of parting lines/draft angles.
Product Advantages:
1. Improved surface finish: Reduces amount of stress risers; Minimizes crack initiation
2. Optimum design and casting process
3. Consistent dimensions
4. Casting are 100% hardness tested, gaged, MPI inspected, fit and operated to ensure quality
5. Available a individual coupler bodies or completely assembled fits.