The bearings units with the right bearings are really advantageous. They are interchangeable and easy to maintain. They are built in a lot of different kinds, for both sizes and shapes.
Series BEARINGS UNITS
UC, UCP, UCF, UCFL, UCC, UCFC, UCT
UK, UKP, UKF, UKFL, UKC, UKFC, UKT
UCPA, UCFA, UCPX, UCFX
B, BPP, BPFL