procurement of gm split bush, rubber insertion, impeller shaft, ball bearing and foot valve leather washer required for maintenance of different rli schemes under balurghat-ii ( a.m ) sub-division under balurghat a.m division-1 gm split bush for venus water pump 2 150 mm dia rubber insertion 5mm thick with proper reinforcement 2 ply conforming to is:638 / 79 ( table-5 ) 3 20 hp pump impellar shaftfor venus / kirloskar water pump with key ( aisi 410 required ) 4 ball bearing 6307 ( tata / skf make ) bore dia-35mm, od-80 mm, width-21mm deep groove ball bearing with sealing on single side 5 150 mm dia foot valve leather washer