Liquiflo H-Series Installation Operation & Maintenance page 35

Liquiflo Installation, Operation & Maintenance Manual
Appendix 3: Wear Allowances
Pump
Series
H-Series
3-Series
O.D. = Outer Diameter
NOTES:
1) Pump models that are not highlighted in the above table have
gears with an even number of teeth. The diameter for these gears
is measured from the tip of one tooth to the tip of the opposite
tooth (see Photo 1). This measurement method gives the true
diameter of the gears.
2) Pump models that are highlighted in orange in the above
table have gears with an odd number of teeth. Because no
two teeth have tips that coincide with the actual geardiameter,
this makes the true gear diameter difficult to measure. A practical
field method for determining gear wear is to measure the "three-
point diameter" of the gear. That is, place one jaw of the caliper
on the tip of one tooth and the other jaw on the tips of both
opposite teeth and then record the distance (see Photo 2). The
highlighted diameter values are based on this measurement
method and are less than the true gear diameters. (For the true
nominal gear diameters, see the chart on Page 39).
3) All diameter values listed in the above table are based
on standard (untrimmed) parts. Parts requiring viscosity
or temperature trims willhave dimensions based on the
application. Consult factory.
(Continued)
Wear Allowances Chart (Units: Inches)
Gears
Pump
Nom.
Model
O.D.
H1F 1.163 1.158
H3F
1.163 1.158
H5R
1.163 1.158
H5F 1.163 1.158
H7N
1.711 1.705
H7R 1.711 1.705
H7F 1.711 1.705
H9R
1.711 1.705
H9F 1.711 1.705
31F 1.163 1.158
33F
1.163 1.158
35R
1.163 1.158
35F 1.163 1.158
37R
1.711 1.705
37F
1.711 1.705
39R 1.711 1.705
39F 1.711 1.705
311F
1.711 1.705
I.D. = Inner Diameter
Shafts
Min Nom. Min
O.D. O.D. O.D.
0.375 0.373
0.375 0.373
0.500 0.498
0.500 0.498
0.625 0.623
0.625 0.623
0.625 0.623
0.625 0.623
0.625 0.623
0.375 0.373
0.375 0.373
0.375 0.373
0.375 0.373
0.500 0.498
0.500 0.498
0.625 0.623
0.625 0.623
0.500 0.498
35
H&3-Series MAG-DRIVE Gear Pumps
Models H1F-H9F, 31F-39F & 311F
Wear Plates Bearings
Nom. Min Nom.
Thick. Thick. I.D.
0.250 0.247 0.375
0.125 0.122 0.375
0.250 0.247 0.500
0.125 0.122 0.500
0.312 0.309 0.625
0.125 0.122 0.625
0.125 0.122 0.625
0.125 0.122 0.625
0.125 0.122 0.625
0.250 0.247 0.375
0.125 0.122 0.375
0.250 0.247 0.375
0.125 0.122 0.375
0.125 0.122 0.500
0.125 0.122 0.500
0.125 0.122 0.625
0.125 0.122 0.625
0.125 0.122 0.500
Photo 1
Photo 2
Max
I.D.
0.378
0.378
0.503
0.503
0.628
0.628
0.628
0.628
0.628
0.378
0.378
0.378
0.378
0.503
0.503
0.628
0.628
0.503