Page 370 - The Tribology Handbook

C18 C i rcu I at i o n systems

MAIN DELIVERY MAIN DELIVERY
J.
4 in BORE -1 x FLOW

hi” BORE =3xFLOW
(c
3/8 in BORE : x FLOW %in BORE -16xFLOW
14
ir

Figure 18.13 Typical flow ratios
Orifice plates may be used at the entry to the bearing or With larger flow rates it may be adequate, with a controlled
gear system. The actual flow rates will vary with viscosity pressure and oil temperature, simply to alter the bore of
unless knife-edge orifices are used, in which case the the pipe through which the supply is taken. The actual
viscosity variation is negligible. flow rates will vary with viscosity, and pipework configura-
tion, i.e. increased number of fittings and directional
changes .
+
ADJUSTABLE SCREW ‘8” *GAUGE PRF:3EE

BYPASS
SIGHT
GLASS
PRESSURE
u
REDUCING

VALVE
Figure 18.14
Combined needle and sight flow indicators used for
adjusting small quantities of lubricant giving only a visual
indication of the flow of lubricant into the top of a The layout of a typical pressure control station is shown
bearing. above.

C18.6