How to Identify hydraulic gear pump

1 - Type of gear support: Bearing or Bushing

Bearing Unit

 

Series

P15H

P37X

P25X

P20

P30-P31

P50-P51

P75-P76

Bearing OD

1.6

2.33

1.94

1.69

1.69

1.94

2.33


Bushing Unit

 

Series

P315

P330

P350

P365

Bushing ID

0.95

1.07

1.3

1.52

Bushing OD

1

1.18

1.46

1.67

Dimensions in inches

2 - Support studs (Bolts or Threaded Rods)

 

Series

P15H

P37X

P25X

P20

P30-P31

P50-P51

P75-P76

P315

P330

P350

P365

No. Studs

4

8

4

4

4

4

8

4

4

4

4

Thread

1/2-NC

1/2-NC

5/8-NC

9/16-NC

5/8-NC

5/8-NC

5/8-NC

1/2-NC

5/8-NC

5/8-NC

5/8-NC

Dimensions in inches

3 - Front Bearing & Retainer

 

Series

P15H

P37X

P25X

P20

P30-P31

P50-P51

P75-P76

P315

P330

P350

P365

Ball Bearing

YES

NO

NO

YES

YES

YES

YES

YES

YES

YES

YES

Bearing OD

2.4

NO

NO

2

2

2.8

3.15

NO

2

2.8

3.15

Snap Ring

YES

NO

NO

YES

YES

YES

YES

NO

YES

YES

YES

Tappered Bearing

NO

YES

YES

NO

NO

NO

NO

NO

NO

NO

NO

Brg Cone OD

NO

3

2.5

NO

NO

NO

NO

NO

NO

NO

NO

Threaded Retainer

NO

YES

YES

NO

NO

NO

NO

NO

NO

NO

NO

Dimensions in inches

4 - Back Cover Dimensions

 

Series

P15H

P37X

P25X

P20

P30-P31

P50-P51

P75-P76

P315

P330

P350

P365

Dimension-W1

3.375

5.25

4.94

4.7

4.81

4.94

6.13

4

4.8

5.75

6.25

Dimension-W2

N/A

7.31

N/A

N/A

N/A

N/A

N/A

4.24

6.88

7.12

7.38

Dimension-H

5.25

7.31

6

5

5.38

6

7.88

4.31

5.38

6

7

Dimensions in inches

5 - Gear Set Dimensions

 

Series

P15H

P37X

P25X

P20

P30-P31

P50-P51

P75-P76

P315

P330

P350

P365

Number of Teeth

14

12

10

10

10

10

10

12

10

10

9

Dimension-D

2

2.79

2.39

2.1

2.1

2.39

3

1.76

2.1

2.4

2.74

Dimensions in inches

6 - Bearing Carrier Dimensions

 

Series

P15H

P37X

P25X

P20

P30-P31

P50-P51

P75-P76

P315

P330

P350

P365

Dimension-W

2.5

3

2.88

2.5

2.5

2.88

3

2.62

3.5

3.5

4

Dimensions in inches

7 - Thrust Plate Dimensions

 

Series

P15H

P37X

P25X

P20

P30-P31

P50-P51

P75-P76

P315

P330

P350

P365

Dimension-W

0.38

0.50

0.38

0.38

0.38

0.38

0.50

0.40

0.25

0.25

0.25

Dimensions in inches


 


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