Page 366 - The Tribology Handbook
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C18 Circulation svstems
Positive-split systems
DELIVERY LINE MASTER DIVIDER
MICRO-SWITCH
SECONDARY DIVIDERS
-FEED LINES
REMOVABLE LID WITH COARSE STRAINER
PRESSUREGAUGE
FLOAT SWITCH
THERMOMETER
LEVEL GAUGE
Figure 78.4
In general these systems deliver a larger quantity of lubricant than multiplunger systems. They comprise a small high-
pressure pump with or without stand-by, fitted with integral reIief valve supplying lubricant to the bearings via positive
dividers. These dividers then deliver the oil to the bearings in a predetermined ratio of quantities. By use of a microswitch
operated by the indicator pin on the master divider (or single divider if the number of points is small), either timed automatic
or continuous operation is available. The microswitch can also be used to give a warning of failure of the system.
Typical applications
Machine tools, sugar industry, gearboxes, printing machines, and special-purpose machinery.
C 18.2
