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Lubrication System Sizing and Calculation Guidelines
Table 1: Lubricant Output and Pressure - US
NOTE: The lubricant output per pump stroke must be less than the amount of lubricant discharged per pump
stroke.
1
2
Injector
Max
Volume to
Injector
Injector
Dispense
Type
Output
and Charge
cu. in.
GL-43
0.008
GL42
0.003
Table 2: Lubricant Output and Pressure - Metric
1
2
Injector
Max
Volume to
Injector
Injector
Dispense
Type
Output
and Charge
cc
GL-43
0.131
GL42
0.049
1. Total Injector Volume to Dispense and Charge
a. Add together the total number of injectors in
the system.
b. From Table 1 or Table 2, find the Injector Type
in the first column and the related Injector Vol-
ume to Charge in the third column. Multiply this
value by the total number of injectors deter-
mined in Step a.
2. Calculate the volume of lubricant in the Pipeline (G):
a. Use the pipe's inside diameter (ID) measure-
ment to calculate the area of the pipe.
b. Measure the length of the pipe (G) only. Do not
include the feeder lines (S) in this calculation.
c. Multiply the area of the pipe calculated in
Step a by the length of the pipe measured in
Step b.
3A4033J
3
4
Max Pump
Maximum Pressure
Lubricant
Output /
Stroke
cu. in.
cu. in.
Output PSI
0.016
0.56
0.006
3
4
Max Pump
Maximum Pressure
Lubricant
Output /
Stroke
Output
cc
cc
MPA (bar)
0.262
9.18
6.9 (68.9)
0.098
5
Required Air
PSI
Output PSI
1000
40
750
5
Required Air
Output
MPA (bar)
MPA (bar)
0.27 (2.7)
5.2 (51.7)
3. Calculate line expansion and fluid compression in
the pipe using the 10% Rule - multiply the volume
calculated in Step 2 by 10%.
4. Calculate the Total System Volume required.
a. Add together the total from Step 1 and Step 3
only. Do not include Step 2.
b. The Total System Volume required must be
less than the Pump Lubricant Output / Stroke
provided in the fourth column of Table 1 or
Table 2.
c. If the Total System Volume required is greater
than the Pump Lubricant Output / Stroke pro-
vided in the fourth column of Table 1 or Table 2,
split the system into two or more systems.
6
Minimum
Recommended Pressure
Pressure
Required
Air PSI
Output PSI
31
850
6
Minimum
Recommended Pressure
Pressure
Required Air
Output
MPA (bar)
MPA (bar)
0.21 (2.1)
5.9 (58.6)
Operation
7
Required Air
PSI
35
7
Required Air
MPA (bar)
0.24 (2.4)
13
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