Ko te Bearing Pōro Porowhita Raina Kotahi Rārangi Inihi he peera pōro Raina Kotahi (SRDG) me ngā Raina Pōkapū inihi. Ngā Bearing Pōro Porowhita Raina Kotahi Rārangi Inihi engari he huinga rerekē me te whānui o te Diameter o Roto (ID) me te Diameter o Waho (OD) rahi inihi. Ka tāpirihia e tēnei raupapa hua rahi inihi me te 25 atu rahi pōkapū mai i te 3/16 o te inihi ki te 1-5/16 o te inihi.
