Bulletin 947070-B
THE OILGEAR COMPANY
7
CONSTRUCTION
See Figures 11, 12 and 13.
1. A driveshaft (21) runs through the center line of
pump housing and valve plate (45) with the
pump cylinder barrel (38) splined to it.
2. A bearing (26) supports the outboard end of
the driveshaft and a bushing supports the
inboard end. (The bushing is part of valve plate
assembly.)
3. The pump cylinder barrel is carried in a
hydrodynamic (journal type) cylinder bearing
(35).
4. The port plate (43) has two crescent shaped
ports and is located on a valve plate (45) that
has matching crescent shaped ports.
5. The pumping piston/shoe assemblies (39) in
the cylinder barrel are held against a
swashblock (29) by a shoe retainer (40).
6. The shoe retainer is held in position by the
fulcrum ball (41) which is forced outward by the
shoe retainer spring (42).
7. The spring acts against the pump cylinder
barrel, forcing it against the valve plate while
also forcing the piston shoes against the
swashblock.
8. The semi-cylindrical shaped swashblock limits
the piston stroke and can be swiveled in arc
shaped saddle bearings (30).
9. The swashblock is swiveled by a control piston
(19). Refer to PRINCIPLE OF OPERATION.
SPECIFICATIONS
Refer to reference material, pump control
material and individual application circuit
for exceptions.
Case pressure should be less than 25 psi (1,7 bar). For higher pressure, consult factory. Higher speeds available - consult factory.
Table 2. All data is for ISO 46 mineral-based oil at 125°F (160 SSU).
NOTE
UNIT
THEORETICAL
MAXIMUM
DISPLACEMENT
RATED
CONTINUOUS
PRESSURE
MAXIMUM
PRESSURE
FLOW RATE
at
1800 rpm rated
continuous
pressure and
14,7 psia (bar abs)
inlet condition
MINIMUM INLET PRESSURE
psia (bar abs)
MAXIMUM
SPEED
POWER
INPUT at
rated
continuous
pressure &
1800 rpm
in 3/rev
ml/rev
psi
bar
psi
bar
gpm
l/mi
1800 rpm
2400 rpm
3600 rpm
rpm
hp
kw
011
0.66
10,8
3750
258,6
4250
293,1
4.3
16,3
5.6 (0,39)
8.1 (0,56)
17.2 (1,19)
3600
12.8
9,5
014
0.86
14,1
3750
258,6
4250
293,1
5.8
22,0
5.5 (0,38)
7.8 (0,54)
17.2 (1,19)
3600
16.4
12,1
022
1.35
22,1
3750
258,6
4250
293,1
9.5
36,0
8.6 (0,60)
11.4 (0,79)
23.7 (1,63)
3600
26.1
19,5
025
1.55
25,4
3750
258,6
4250
293,1
10.1
38,2
6.5 (0,45)
11.5 (0,80)
-
2700
28.8
21,5
034
2.06
33,8
3750
258,6
4250
293,1
14.1
53,4
5.7 (0,40)
11.0 (0,76)
-
2700
37.7
28,1
046
2.83
46,4
3750
258,6
4250
293,1
19.7
74,6
5.7 (0,40)
8.1 (0,56)
-
2400
51.9
38,7
064
3.88
63,6
3750
258,6
4250
293,1
26.6
100,7
7.3 (0,50)
11.4 (0,79)
-
2400
70.2
52,4
065
4.00
65,5
3750
258,6
4250
293,1
27.9
105,6
6.2 (0,43)
10.2 (0,70)
-
3000
71.0
53,0
075
4.61
75,5
3750
258,6
4250
293,1
31.3
118,5
6.5 (0,45)
10.6 (0,73)
-
3000
83.8
62,5
076
4.67
76,5
3750
258,6
4250
293,1
32.4
122,6
8.2 (0,57)
13.4 (0,92)
-
2400
85.7
63,9
098
6.00
98,3
3750
258,6
4250
293,1
41.2
156,0
8.3 (0,57)
12.1 (0,83)
-
2400
109.2
81,4
130
7.94
130,2
3750
258,6
4250
293,1
57.8
218,8
8.7 (0,60)
14.9 (1,03)
-
2400
150.8 112,5