The innovative OAO cooler does two jobs in one. Not only is it an efficient cooler, it is also a super quiet pump. Now setting up an offline cooling circuit is made easy, just select the correct OAO model based on cooling required, add a filter and you're done. If you would like assistance in selecting the cooler for your needs, please contact OilAir Hydraulics.
 
Model Number
Heat
Rejection
BTU/HR/F
Oil Flow
(gpm)
Sound Level
db(A)
Weight
(lbs)
A
(in)
B
(in)
C
(in)
SAE O-ring
Connection
OAO 07-4-1-6
280
6.3
71
67
19.0
15.6
28.5
-16
OAO 07-4-1-12
320
12.7
71
68
19.0
15.6
29.0
-16
OAO 07-4-2-19
360
19.0
72
82
19.0
15.6
30.8
-16
OAO 07-4-2-25
370
25.4
72
83
19.0
15.6
31.3
-16
OAO 11-4-1-6
430
6.3
74
78
21.8
18.5
29.5
-16
OAO 11-4-1-12
510
12.7
74
79
21.8
18.5
30.0
-16
OAO 11-6-1.5-12
440
12.7
65
91
21.8
18.5
31.8
-16
OAO 11-6-1.5-17
480
17.4
65
92
21.8
18.5
32.3
-16
OAO 11-4-2-19
580
19.0
75
93
21.8
18.5
31.8
-16
OAO 11-4-2-25
600
25.4
75
94
21.8
18.5
32.3
-16
OAO 16-4-2-6
595
6.4
77
85
24.3
20.7
31.8
-16
OAO 16-4-2-12
750
12.7
77
85
24.3
20.7
32.3
-16
OAO 16-6-1.5-12
610
12.7
67
86
24.3
20.7
32.8
-16
OAO 16-6-1.5-17
660
17.4
67
88
24.3
20.7
33.3
-16
OAO 16-4-2-19
860
19.0
78
88
24.3
20.7
32.8
-16
OAO 16-4-2-25
900
25.4
78
89
24.3
20.7
33.3
-16
OAO 23-4-2-12
1000
12.7
82
105
27.4
24.0
33.3
-16
OAO 23-6-1.5-12
850
12.7
71
104
27.4
24.0
33.8
-16
OAO 23-6-2-17
920
17.4
71
151
27.4
24.0
33.3
-16
OAO 23-4-3-19
1250
19.0
82
149
27.4
24.0
37.0
-16
OAO 23-4-3-25
1400
25.4
82
150
27.4
24.0
37.3
-16
OAO 33-6-3-17
1650
17.4
80
158
31.4
28.4
41.3
-20
OAO 33-4-5-19
1900
19.0
89
137
31.4
28.4
40.8
-20
OAO 33-4-5-25
2250
25.4
89
138
31.4
28.4
39.3
-20
OAO 44-6-3-17
1850
17.4
79
186
31.4
34.1
42.3
-20
OAO 44-4-5-19
2350
19.0
90
166
31.4
34.1
39.8
-20
OAO 44-4-5-25
2550
25.4
90
167
31.4
34.1
40.3
-20
 
 

 
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