Installation Guide

July 1, 2002
APPLICATIONS ENGINEERING NEWSLETTER
Bearing Lubrication Instructions for 300 Series End Suction Frame Mounted Pumps
Grea s e lubricat ion is s t anda rd for t he A urora E nd S uct ion F rame Mount e d Pumps . Re gre a se a ble
bearings will require lubrication replacement and this can be accomplis hed by us ing the lubrication
fitting at each bearing. Lubricate the bearings at regular intervals us ing high quality greas e. The initial
bearing lubrication at Aurora uses Chevron SRI Greas e NLGI 2 (polyurea thickener). We recommend
this grease for follow-up relubrication. Most major brands of Grade No. 2 ball bearing grease are
satis factory for pump operation in both wet and dry applications . Be aware that mixing of different
brands of grease should be avoided due to poss ible chemical reactions between the brands that could
damage the bearings. A thorough flushing of the old greas e with the new is highly recommended to
minimize this potential incompatibility. Avoid greas e of vegetable or animal base that can develop
acids , as well as greas e containing rosin, graphite, talc or other impurities . Under no circumstances
s hould grea s e be re us e d.
In dry locations, each bearing will need lubrication at least every 4,000 hours of running time or every 6
to 12 months, whichever is more frequent. In wet locations the bearings should be lubricated at least
after every 2,000 hours of running time or every 4 to 6 months , whichever is more frequent. A unit is
cons idered to be installed in a wet location if the pump and motor are exposed to dripping water, to the
weather, or to heavy condensation such as found in unheated and poorly ventilated underground
locations .
To lubricate, inject greas e into the lubrication fitting at the bearing cap near the coupling and also at
the top of the bearing frame. Two to three s hots of grease from a standard grease gun should be
sufficient. The excess grease will drop into the frame.
Note: Aurora Pump Distribution Center s tocks Chevron SRI #2 grease in 14 oz. tubes for greas e
guns under Aurora Part Number 384-0002-639.
Aurora Pump
800 Airport Road
North Aurora, IL 60542
Phone: [phone]
Fax: [phone]