Stainless steel V groove roller bearing for umbrella tool changer shuttle in and out assembly.
This wheel guide needs an bushing for instillation the upper bushing is round and the lower bushing is cam shaped for tightening the tool changer on the track.
Upper bushing 54-0040.
Lower Bushing 54-0020.
This part is compatible with part #54-0030
Disclaimer: this aftermarket part was not manufactured by Haas.