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25ZJ - B Slurry Pump Construction
The frame plates for type ZJ(R) pumps have replaceable wear-resistnat metal liners. The impeller are made of wear-resistant metal.

25ZJ - B Slurry Pump Performance Parameters
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25ZJ-B | 15 | 10.8-25.2 | 7-52 | 1400-3400 | 35 | 2-4 | 3 | 152 |
40ZJ-B | 15 | 25.2-54 | 5.5-41 | 1000-2600 | 50 | 2.5-5 | 5 | 178 |
50ZJ-C | 30 | 36-75.6 | 13-39 | 1300-2100 | 55 | 2-4 | 5 | 213 |
75ZJ-C | 30 | 79.2-180 | 5-34.5 | 800-1800 | 59 | 3-5 | 5 | 245 |
100ZJ-D | 60 | 144-324 | 12-45 | 800-1350 | 65 | 3-5 | 5 | 365 |
150ZJ-E | 300 | 324-720 | 7-49 | 400-1000 | 65 | 5-10 | 5 | 510 |
200ZJ-F | 560 | 540-1188 | 12-50 | 400-750 | 75 | 4-12 | 5 | 686 |
250ZJ-ST | 560 | 720-1620 | 7-45 | 300-650 | 80 | 2.5-7.5 | 5 | 762 |
300ZJ-ST | 560 | 1050-2520 | 13-44 | 300-500 | 79 | 3-8 | 5 | 965 |
350ZJ-TU | 1200 | 1200-3000 | 11-42 | 250-450 | 82 | 4-9 | 5 | 1067 |
400ZJ-TU | 1200 | 1800-4000 | 12-44 | 200-350 | 82 | 5-10 | 5 | 1370 |
25ZJ - B Slurry Pump Selection Chart





All pumps connected with motor with different drive style according to the motor power and pump support.
According to different drive style, the pump need different accessores. Such as V-belt, Pulley, Base Plate, Belt Cover, Gearbox and Coupling

Modld Making, Casting, Heat Treating, Machining, Assembling, Packing and Transport.


Naipu pump produce many kinds of centrifugal slurry pump for mining, sand and other solids slurry transporting.
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The slurry pump spare parts can be made of various material according to customer’s requirement, Such as : Alloy 20, Hastelloy Alloy , A 61 and so on.


Possible faults and removal
| Faults | Reason | Removal |
| Pump fails to discharge any liquid. | Incorrect direction of pump rota- tion and impeller worn. Suction pipe blocked | Check direction of rotation and replace a new impeller |
| Power consumption on sh- aft is excessive | Rotating component is rubbing on a stationary part. Bearing worn. Drive belt tension too tight Flow rate too large Pump speed and ratio too high. Misalignment or unparallel of ddrive shaft and pump shaft. | Removal the rub Replace the bearing Adjust belt Modify the pump duty and speed. Adjust drive and pump shaft |
| Bearing is over hearing | Lubricants too much or less. Containing impurities in the lubricant Bearing worn. | Lubricating as requirements. Replace clean lubricant. Replace new bearing. |
| Bearing has short life. | Misalignment or unparallel of drive and pump motor. Shaft bent. Impeller unbalanced due to wear Foreign object entered into the bearing or insufficient lubrication Incorrect procedure followed in fitting bearings. | Adjusting drive and pump shaft. Replacing shaft. Remove rubbing and replace new impeller Clean the bearing. Replace or refit the bearings. |
| Pump vibrates or is noisy. | Bearings worn. Impeller unbalanced. Air entered into suction pipe or blocked. Flow rate is none—uniform and pump not primed. | Replaced by new bearings. Replaced by new impeller. Discharge air and remove block. Improve on the pump feeding. |
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