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Vesconite for inline shaft bearings
for Mono axial flow pump
Vesconite bearings fitted to Mono axial
flow pumps abstracting river water from the Orange River in South Africa
have successfully solved wear problems caused by dirty and silt laden water
during seasonal floods. Previously the pump bearings needed regular
overhauls at great cost.
Pump size : 12" and 16"
1460 RPM, 110 KW
Duty : More than 500 hours per month
Bush size 57 x 38 - 127 mm long with 6 longitudinal grooves
Part number : 40852
Originally the intake bearings were fitted with bronze bearings that were
grease lubricated twice daily. The pumps extract raw river water from the
Orange River.
During seasonal rains, large quantities of sand are suspended in the pumped
water. This sand mixes with the bearing grease giving a grinding paste resulting
in very rapid wear within a few days.
Bearings needed to be replaced each time high sand concentrations were present
in the water being pumped. |
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Worn bearings also resulted in eccentric shafts causing expensive casing
wear and loss in pump efficiency.
Vesconite was proposed as an alternative. A clean water bearing flush was
added to ensure that as little sand as possible entered the bearing. The
bearing was sealed on the upstream side and open on the downstream side. The
clean flush water exhausted into the pump flow.
This proved a very successful operation for Vesconite bearings which lasted
significantly longer than the bronze bearings.
Vesconite is suited for lubrication with process water, oils or greases. |
Updated Jul 01 2004
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