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ITEM

QTY

PART

MATERIAL

1

1

DRIVING GEAR SHAFT

TOOL STEEL

2

1

DRIVEN GEAR SHAFT

TOOL STEEL

3

1

CENTER PLATE

TOOL STEEL

4

2

COVER PLATE

4140

6

2

BEARING

TOOL STEEL

7

2

BEARING

TOOL STEEL

14

2

SEAL PLATE

STAINLESS

16

2

LIP SEAL

FILLED PTFE

17

20

SOCKET HEAD BOLT

ALLOY

18

8

SOCKET HEAD BOLT

ALLOY

20

2

RHEOSEAL

STAINLESS

21

8

SOCKET HEAD CAP SCREW

ALLOY

22

2

METAL C-RING, SEALS

23

2

METAL C-RING, PORTS

NOT SHOWN

Materials Of Construction Diagram And Chart

Dimensional Diagram

PUMP

PUMP DIMENSIONS

MAX

APPROX 

CAPACITY

A

B

C

D

E

F

G

H

I

J

TORQUE WEIGHT

5

3.250

3.250

3.250

1.125

2.875

2.125

0.500

1/4

1.875

0.750

1225

10

10

4.000

4.000

4.000

1.188

3.375

2.615

0.625

5/16

2.344

1.000

2085

18

20

4.750

5.000

5.000

1.188

3.750

3.300

0.750

3/8

2.813

1.250

3250

34

40

5.750

6.000

6.250

1.188

4.438

4.000

1.000

7/16

3.531

1.500

6750

61

100

8.000

8.250

8.250

1.750

5.438

5.458

1.250

5/8

4.688

2.188

12100

150

175

9.500

9.750

9.880

1.813

6.375

6.475

1.500

3/4

5.750

2.625

22400

260

300

11.250

12.000

12.500

2.375

8.063

8.000

2.000

7/8

7.063

3.000

50600

480

750

14.750

15.750

16.500

3.000

10.000

10.542 2.500

1/8

9.688

4.250

116600

1100

CC/REV

PUMP DIMENSIONS ARE IN INCHES 

IN-LBS 

LBS

Dimensional Data Chart

Diagram 3

5

Chart 3

PEP-II  Pump
5-750 cc/rev

Chart 4

Diagram 4

Summary of Contents for Pumps

Page 1: ...Zenith Pumps Installation Care and Maintenance Zenith Polymer Extrusion Gear Pumps PEP II Series Gear Pumps...

Page 2: ...critical issues in the diverse plastics industry The Zenith gear pump optimizes the extrusion process by allowing the screw to melt and homogenize the polymer As the pump generates the needed pressur...

Page 3: ...and bottom of the center plate for the mounting of heat plates and for the mounting of the pump to its stand Thermocouple wells 1 8 27 NPT are located on the body of the pump A Zenith Rheoseal assembl...

Page 4: ...1 KEY EXTERNAL PUMP PUMP DIMENSIONS MAX APPROX CAPACITY A B C D E F G H I J TORQUE WEIGHT 0 16 3 000 3 000 2 860 1 400 2 400 1 960 0 750 1 4 1 500 0 125 80 9 0 3 3 000 3 000 2 860 1 400 2 400 1 960 0...

Page 5: ...I J TORQUE WEIGHT 5 3 250 3 250 3 250 1 125 2 875 2 125 0 500 1 4 1 875 0 750 1225 10 10 4 000 4 000 4 000 1 188 3 375 2 615 0 625 5 16 2 344 1 000 2085 18 20 4 750 5 000 5 000 1 188 3 750 3 300 0 75...

Page 6: ...ture thread lubricant such as DAG Dispersion 154 Felpro C 100 or equivalent 2 Place the top heat plate on the pump then place the insulation jacket on top of the heat plate Install and tighten the bol...

Page 7: ...nces As with any other Zenith pumps PEP II pumps may be returned to Zenith for complete rehabilitation as necessary This procedure may be desirable if only a few pumps are involved If a large number o...

Page 8: ...te assembly Again soaking the parts in lubricating penetrating oil or other non damaging solution will help ease the disassembly Do not force the parts out one side with a hammer or arbor press 7 Slid...

Page 9: ...he driven shaft taking care to select a bearing with the proper groove configuration Set the flats on the circum ference of the bearings against each other and gently slide the bearings and shafts int...

Page 10: ...gently press the lip seal into the Rheoseal housing Do not attempt to press on the lip seal with screwdriver or other pointed object as this will damage the seal Do not press the lip seal all the way...

Page 11: ...rrent and speed settings Check all drive couplings 3 Process conditions changed Check process conditions for proper melt temperature pres sures viscosities and materials 4 Entrained particle Disassemb...

Page 12: ...y of operating conditions and applications for these products or systems the user through its own analysis and testing is solely responsible for making the final selection of the products and systems...

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