Barber S2-86® Radial Adapter

Wabtec Freight Car Products Barber S2-86® Radial Adapter

The Barber S2-86® Radial Adapter primary suspension system provides passive semi-radial steering performance. A single layer of rubber bonded between two steel plates and situated above the bearing adapter allows for radial alignment of the wheelsets during curving, which reduces rolling resistance, improving rail and wheel life.

  • M-976 track tested and approved on a variety of trucks
  • Tested and approved under M-924 roller bearing adapter specification
  • Fits standard AAR pedestal - no special side frames required
  • Utilizes standard M-924 features, like the bearing adapter roof recess
  • Durable vulcanized rubber to steel bond
  • Rubber Maintains properties over wider temperature range than other polymers
  • Resilient rubber surface provides better load distribution across pedestal roof discontinuities
  • Grounding wire provides more reliable electrical continuity than studs
  • Rejection lugs prevent misapplication