Hydraulic Hoses while you
wait
We can make new replacement
hoses from our large on-hand
inventory, there is no need to wait
for an ordered hose to come in at
the equipment dealer.
Hydraulic Power Units
Custom hydraulic power units
made to your specification. Gas,
Diesel, Electric, Portable, Stationary
Big Sky Hydraulics &
Machining Inc.
Hydraulic Components
Whether you are in need of New or
Re-Conditioned, Big Sky Hydraulics
is your one stop source.  Let us help
you get back up and running without
draining your wallet in the process.
Big Sky Hydraulics
2315 10th St NE #B
Great Falls, Montana  
59404
(406) 727-5623
F: (406) 727-5625
Hydraulic Gear Pumps & Motors
made to order:
 Do you need a new
replacement gear pump?  Maybe you
need a pump for a new application.  
We build our own pumps from stock
parts here in our machine shop, to
your specifications.

Made to replace
Parker, Commercial,
Permco, Metaris...etc.
e-mail for more information
Hydraulic Gear pumps
made to order
Do you need a new replacement gear pump?  Maybe you need a
pump for a new application.  We build our own pumps from stock
parts here in our machine shop, to your specifications.

Made to replace
Parker, Commercial, Permco, Metaris...etc.
Speed
RPM
Gear Width, Output (GPM / lpm)
1"
1-1/4"
1-1/2"
1-3/4"
2"
900
6.5
8
10
12
13.5
24.5
30
38
45.5
51
1200
9
11.5
14
16
18.5
34
43.5
53
60.5
70
1500
11.5
14.5
17.5
20.5
23.5
43.5
55
66
77.5
89
1800
14
18
21.5
25
29
53
68
81.5
94.5
110
2100
16.5
21
25
29.5
34
62.5
79.5
94.5
112
129
2400
19
24
29
34
39
72
91
110
129
148
P3D
P5D
 
Gear Width, Output (GPM / lpm)
1"
1-1/4"
1-1/2"
1-3/4"
2"
2-1/4"
2-1/2"
900
8.5
10.5
13
15
17.5
20
22
32
39.5
49
57
66
75.5
83.5
1200
129
15
18
21
24
27
30
46.5
57
68
79.5
91
102
114
1500
15
19
23
27
31
35
39
57
72
87
102
117
132
146
1800
18
23
27.5
32.5
37.5
42
47
53
68
81.5
94.5
110
 
 
2100
16.5
21
25
29.5
34
 
 
62.5
79.5
94.5
112
129
 
 
2400
19
24
29
34
39
 
 
72
91
110
129
148
 
 
Bearing Series Pressures and Displacements
Series
Gear Width
Displacement
Max Pressure
P3D
In.
mm
cid/rev
ccm/rev
PSI
Bar
 
.50
12.7
.99
16.1
3000
207
 
.75
19
1.48
24.2
3000
207
 
1.00
25.4
1.97
32.3
3000
207
 
1.25
31.8
2.46
40.4
3000
207
 
1.50
38.1
2.96
48.4
3000
207
 
1.75
44.5
3.45
56.5
2500
172
 
2.00
50.8
3.94
64.6
2500
172
 
P5D
In.
mm
cid/rev
ccm/rev
PSI
Bar
 
.50
12.7
1.28
20.9
3000
207
 
.75
19
1.91
31.3
3000
207
 
1.00
25.4
2.55
41.8
3000
207
 
1.25
31.8
3.19
52.2
3000
207
 
1.50
38.1
3.83
62.7
3000
207
 
1.75
44.5
4.46
73.1
3000
207
 
2.00
50.8
5.10
83.6
2500
172
 
2.25
57.2
5.74
94.0
2500
172
 
2.50
63.5
6.38
104.5
2500
172