... , opening condition and boat.6. According to pumps different use temperatures, its bearing includes: air cooling ... 250-inlet diameter (mm)A-first reconstruction, Y-centrifugal oil pump, S-first impeller double-suction,,material ... six models: single-stage single-suction cantilever type, double-stage single-suction cantilever type, single-stage double-suction cantilever type, single-stage double-suction ...