TYPE SERIES NRS

With single vane impellers
With multichannel impellers

A Hannibal standard centrifugal pump as a modular system

With a range of impellers and replaceable wear plates; a wide performance range; and universal functionality.

For pumping slurries, slush pulps, and suspensions e.g. of coarse contaminants and solid matter.

The type series NRS is available in four sizes from DN 100 to DN 250 with a total of nine housing volumes.

This type series is therefore ideal for a wide performance range.

Parts Name
102 Volute casing
135.1 Wear plate
135.2 Wear plate (by request)
163 Pressure cover
183 Support foot
210 Shaft
230 Single vane impeller
230.1 Multichannel impeller
321 Radial ball bearing
322 Self aligning roller bearing
330 Bearing carrier housing
340 Bearing carrier skirt
451 Packing case
452 Stuffing box gland
458 Skirt ring
461 Stuffing box packing
524 Protective shaft sleeve
922 Impeller nut

Characteristic diagram for multichannel impellers n = 1450 rpm

Thanks to the modular system, the type series NRS requires only three bearing skirts, for example, including shafts, protective shaft sleeves, packing cases, impeller nuts, and self aligning roller and radial ball bearings. Replacement parts stocks are therefore simple and cost effective.

Parts Name 100-250 100-315 100-400 125-250 125-315 125-400 150-315 150-400 250-400
102 Volute casing A B C D E F G H L
135.1 Wear plate A B C D E F G H L
135.2 Wear plate A B C A B C G C K
163 Pressure cover A B C D E F G H L
183 Support foot A B C A B C C C K
210 Shaft A A C A C C C C K
230 Single vane impeller A B C D E F G H L
230.1 Multichannel impeller A B C D E F G H L
321 Radial ball bearing A A C A C C C C K
322 Self aligning roller bearing A A C A C C C C K
330 Bearing carrier housing A A C A C C C C K
340 Bearing carrier skirt A B C A G C G C K
451 Packing case A A C A C C C C K
452 Stuffing box gland A A C A C C C C K
458 Skirt ring A A C A C C C C K
461 Stuffing box packing A A C A C C C C K
524 Protective shaft sleeve A A C A C C C C K
922 Impeller nut A A C A C C C C K

The same letters in the rows correspond to the same parts.

Characteristic diagram for single vane impellers n = 1450 rpm

According to their characteristic diagrams, the pumps can be fitted with single vane or multichannel impellers and the corresponding wear plates. The internal parts of each pump must therefore be matched precisely to the type and composition of the pumped media.

In addition to grey cast iron, other materials include abrasion and corrosion resistant stainless steel alloys. This also expands the range of possible applications to the pumping of abrasive and corrosive media.

The impeller hub is sealed reliably with O rings secured with an impeller nut and protective shaft sleeve. The shaft therefore does not require a special design in aggressive media.

The bearings are lubricated by a permanent oiler (also grease lubrication is possible on request).
The pumps therefore require little maintenance.

Repair work can remove and replace the complete bearing carrier, including the impeller, without the need to dismantle the piping. If a spacer coupling is used, the motor does not need to be removed either.

The drive can be supplied by either an electric motor or IC engine.

Type Pump measurements Shaft end Foot measurements Flange measurements Completed size
NW a f h1 h2 d t u l c m1 m2 n1 n2 s2 D k s1 Number of holes x
100-250 100 180 630 225 280 32 35.3 10 80 400 125 80 400 315 M16 220 180 18 8 140
100-315 100 180 630 250 315 32 35.3 10 80 400 125 80 400 315 M16 220 180 18 8 145
100-400 100 200 710 280 355 42 45.1 12 110 450 140 90 450 355 M16 220 180 18 8 150
125-250 125 180 630 225 355 32 35.1 10 80 400 125 80 400 315 M16 250 210 18 8 150
125-315 125 200 710 280 355 42 45.1 12 110 450 140 90 450 355 M16 250 210 18 8 155
125-400 125 200 710 280 400 42 45.1 12 110 450 140 90 140 355 M16 250 210 18 8 160
150-315 150 200 710 280 355 42 45.1 12 110 450 140 90 450 355 M16 285 240 23 8 160
150-400 150 200 710 280 400 42 45.1 12 110 450 140 90 450 355 M16 285 240 23 8 165
250-400 250 200 800 355 500 55 58.8 16 110 500 160 100 560 450 M16 395 350 23 12 180

Details and Figures are without commitment and subject to changes without prior notice.