A suspension system for a rail car has at least two undercarriage members and at least one equalizer bar removably and pivotally secured to and between the two undercarriage members. A spherical bearing has an outer member that surrounds an inner member. The outer member is removably secured to one of the undercarriage members. The inner member is removably secured to the equalizer bar. The outer member defines at least one outer member section having an arcuate interior surface and the inner member defines at least one inner member section having an arcuate exterior surface. A low friction liner is disposed on at least one of the arcuate interior surface or the arcuate exterior surface.