... , Y-centrifugal oil pump, S-first impeller double-suction,,material code of over-current partsI-class ... double-suction cantilever type, single-stage double-suction double-support type, double-stage double-suction double-support type and double-stage single-suction double- ... hole.Its bearing body has a set of radial ball bearing and back-to-back ball thrust bearing. Its bearing adopts oil ...