(a) Grease lubricated cartridge bearings shall be used. The bearing shall be
such that no attention is required between bogie overhauls.
(b) The front and rear seal shall prevent the ingress of water and/or cleaning
fluids to the bearing both during normal running and during cleaning.
(c) The Contractor shall carry out bearing life calculations to demonstrate
that the selected size of bearing is adequate for the required duties.
(d) The Contractor shall carry out bearing rig performance test and sealing
test in accordance with BS EN 12082: 1998 to demonstrate that the
requirements in PS 12.10.6 have been achieved.