ax - axial flow · ax - axial flow mx - mixed flow vertical line shaft turbines 8″ to 20″...

STERLINGPUM PS

www.sterlingpumps.com.au

TECHNICAL DATA

AX - Axial Flow MX - Mixed Flow

Vertical Line Shaft Turbines

8″ to 20″

8"

Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.

MX-8AA 2900 rpm

1

1

1

1

0 10 20 30 40 50 60 70 80 90

0

2

4

6

8

10

12

14

16

18

20

0 50 100 150 200 250 300 350[Litre/sec]

Tota

l Hea

d (m

)

[m3/hr]

50 HZ

0

2

0 50 100 150 200 250 300 350

NPS

H [m

]

[M3/hr]

P

ƞ

40

60

80

100

0

3

6

9

12

15

18

0 50 100 150 200 250 300 350

Effic

ienc

y [%

]

Pow

er [k

W] P

er S

tage

[M3/hr]

10"


MX-10AA 2900 rpm

1

1

1

1

0 20 40 60 80 100 120

0

5

10

15

20

25

30

35

40

45

0 50 100 150 200 250 300 350 400 450 500[Litre/sec]

Tota

l Hea

d (m

)

[m3/hr]

50 HZ

0

2

0 50 100 150 200 250 300 350 400 450 500

NPS

H [m

]

[M3/hr]

40

50

60

70

80

90

0

10

20

30

40

50

60

0 50 100 150 200 250 300 350 400 450 500

Effic

ienc

y [%

]

Pow

er [k

W] P

er S

tage

[M3/hr]

P

ƞ

12"


MX-12AA 1460 rpm

183mm

208mm

83 133 183 233 283 333

0

2

4

6

8

10

12

14

16

300 400 500 600 700 800 900 1000 1100 1200[Litre/sec]

Tota

l Hea

d (m

)

[m3/hr]

50 HZ

0

2

4

6

300 400 500 600 700 800 900 1000 1100 1200

NPS

H [m

]

[M3/hr]

40

50

60

70

80

90

0

20

40

60

80

100

300 400 500 600 700 800 900 1000 1100 1200

Effic

ienc

y [%

]

Pow

er [k

W] P

er S

tage

[M3/hr]

P

ƞ

14"


AX-14AA 1450 rpm

+2

0

-2

-4

+4

0 50 100 150 200 250 300 350 400 450 500

0

2

4

6

8

10

12

0 200 400 600 800 1000 1200 1400 1600 1800[Litre/sec]

Tota

l Hea

d (m

)

[m3/hr]

50 HZ

0

2

0 200 400 600 800 1000 1200 1400 1600 1800

NPS

H [m

]

[M3/hr]

+4+2

-20

-4

0

5

10

15

20

25

30

35

40

0 200 400 600 800 1000 1200 1400 1600 1800

Pow

er [k

W] P

er S

tage

[M3/hr]

14"

Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.

Pump performance comply to ISO 9906 gr. 3b.

Indicated efficiency values are valid for pumps in 3 stages or more.

Consult with factory for curves at different speeds or trimmed impeller diameter.

MX-14AA ≃ 1480 rpm

0-2

-4

+2

0 50 100 150 200 250 300 350 400

0

2

4

6

8

10

12

14

16

18

0 200 400 600 800 1000 1200 1400 1600

[Litre/sec]

Tota

l Hea

d (

m)

[m3/hr]

50 HZ

0

2

0 200 400 600 800 1000 1200 1400 1600

NP

SH [

m]

[M3/hr]

+20

-4-2

0

10

20

30

40

50

60

0 200 400 600 800 1000 1200 1400 1600

Po

wer

[kW

] P

er S

tag

e

[M3/hr]

14"


MX-14BA 1460 rpm

211mm

243mm

111 161 211 261 311 361 411

0

5

10

15

20

25

400 600 800 1000 1200 1400 1600[Litre/sec]

Tota

l Hea

d (m

)

[m3/hr]

50 HZ

0

1

2

400 600 800 1000 1200 1400 1600

NPS

H [m

]

[M3/hr]

ƞ

40

50

60

70

80

90

0

20

40

60

80

100

120

400 600 800 1000 1200 1400 1600

Effic

ienc

y [%

]

Pow

er [k

W] P

er S

tage

[M3/hr]

P

16"


MX-16AA 980 rpm

211mm

243mm

167 267 367 467 567

0

2

4

6

8

10

12

14

16

600 800 1000 1200 1400 1600 1800 2000 2200[Litre/sec]

Tota

l Hea

d (m

)

[m3/hr]

50 HZ

0

1

2

600 800 1000 1200 1400 1600 1800 2000 2200

NPS

H [m

]

[M3/hr]

P

ƞ

40

50

60

70

80

90

0

20

40

60

80

100

120

600 800 1000 1200 1400 1600 1800 2000 2200

Effic

ienc

y [%

]

Pow

er [k

W] P

er S

tage

[M3/hr]

20"


AX-20AA 960 rpm

+20

-2-4

+4

278 378 478 578 678 778 878 978 1078

0

2

4

6

8

10

12

1000 1500 2000 2500 3000 3500 4000[Litre/sec]

Tota

l Hea

d (m

)

[m3/hr]

50 HZ

0

2

1000 1500 2000 2500 3000 3500 4000

NPS

H [m

]

[M3/hr]

+2+2

-2 0-4

0102030405060708090

100

1000 1500 2000 2500 3000 3500 4000

Pow

er [k

W] P

er S

tage

[M3/hr]

20"


MX-20AA 980 rpm

+20

-2-4

+4

139 239 339 439 539 639 739 839 939

0

2

4

6

8

10

12

14

16

500 1000 1500 2000 2500 3000 3500[Litre/sec]

Tota

l Hea

d (m

)

[m3/hr]

50 HZ

0

2

500 1000 1500 2000 2500 3000 3500

NPS

H [m

]

[M3/hr]

+4

+2-2 0

-4

0102030405060708090

100

500 1000 1500 2000 2500 3000 3500

Pow

er [k

W] P

er S

tage

[M3/hr]

Water Lube ColumnNominal diameter (inches)

Length (metres)

Flange OD Collar OD(mm) (mm)

4" 160 1266" 235 180 8 TPI8" 270 250

4" 160 1266" 235 1808" 270 250

10" 336 29112" 412 316

6" 235 1808" 270 250

10" 336 29112" 412 31614" 440 na16" 580 na

6" 235 1808" 270 250

10" 336 29112" 412 31614" 440 na16" 580 na18" 640 na

Notes for all Column:Shaft couplings are Bronze Carbon Steel threaded column collar is Carbon steelBearing Retainers are Bronze 304SS threaded column collar is BronzeShaft material is 431SS TPI = Threads per InchPumps above 2,200 rpm must use 1.5 metre bearing centre columnPumps below 2,200 rpm may use 3 metre bearing centre columnCarbon steel external surfaces are painted in bitumous black paint for corrosion resistanceThreaded columns use industry standard thread pitch, right hand. Left hand available as an option

Feb-18

3 M1-1/2" 8 TPISch 40

Subject to change with continuous improvement. If critical, confirm with Sterling Pumps

1-3/4" 3 M 3 M 1.5 M Sch 40 CS Sch 10 SS Sch 40

3 M 1.5 M Sch 40 CS Sch 10 SS

3 M 1.5 M

Carbon Steel or 304SS

Pipe Pipe

Sch 401" 3 M 3 M 1.5 M

Line shaft size

(inches)

Column nominal

size diameter

Column Length

(metres)

Bearing Centres (metres)

(refer to speed note)

Sterling Pumps Pty Ltd T: 03 5941 3400 [email protected]

8 TPI

Sch 40 CS Sch 10 SS

FLANGED

1-1/4" Sch 40 CS Sch 10 SS Sch 40 8 TPI

THREADEDCarbon Steel or 304SS

Thread

3 M

Oil Lube ColumnNominal diameter (inches)

Length (metres)

Flange OD Collar OD(mm) (mm)

4" 160 1266" 235 180 8 TPI8" 270 250

4" 160 1266" 235 1808" 270 250

10" 336 29112" 412 316

6" 235 1808" 270 250

10" 336 29112" 412 31614" 440 na16" 580 na

6" 235 1808" 270 250

10" 336 29112" 412 31614" 440 na16" 580 na18" 640 na

Notes for all Column:Shaft couplings are Carbon Steel (in oil) Carbon Steel threaded column collar is Carbon steelBearings are Bronze 304SS threaded column collar is BronzeShaft material is 431SS TPI = Threads per InchFor vertical installations, install Oil Tube stabiliser (centraliser) at least one (1) every 12 metresFor inclined/angled installations, install Oil Tube stabiliser (centraliser) every 3 metresCarbon steel column and Oil Tube external surfaces are painted in bitumous black paint for corrosion resistanceThreaded columns use industry standard thread pitch, right hand. Left hand available as an option

Feb-18

8 TPI

Sterling Pumps Pty Ltd T: 03 5941 3400 [email protected]

3"

Subject to change with continuous improvement. If critical, confirm with Sterling Pumps

1-3/4" 3 M 1.5 M Sch 40 CS Sch 10 SS Sch 40

8 TPI

1-1/2" 3 M 1.5 M Sch 40 CS Sch 10 SS Sch 40 8 TPI

2"

2-1/2"

1-1/4" 3 M 1.5 M Sch 40 CS Sch 10 SS Sch 40

1" 3 M 1.5 M Sch 40 CS Sch 10 SS Sch 402"

Line shaft size

(inches)

Column nominal

size diameter

Column Length

(metres)

Bearing Centres (metres)

FLANGED THREADEDCarbon Steel or 304SS Carbon Steel or 304SS

Pipe Pipe Thread

Oil Lube Tube

(inches)

Conversion charts

Multiplier Unit1 m³/h 5 10 20 30 40 50 60 70 80 90

24 m³/day 120 240 480 720 960 1,200 1,440 1,680 1,920 2,1600.277778 L/S 1.4 2.8 5.6 8.3 11.1 13.9 16.7 19.4 22.2 25.016.6667 LPM 83 167 333 500 667 833 1,000 1,167 1,333 1,5003.66615 IGPM 18 37 73 110 147 183 220 257 293 3304.40287 USGPM 22 44 88 132 176 220 264 308 352 396

0.001 ML/hr 0.005 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.090.024 ML/day 0.12 0.24 0.48 0.72 0.96 1.2 1.44 1.68 1.92 2.16

Multiplier Unit1 m³/h 100 200 300 400 500 600 700 800 900 1,000

24 m³/day 2,400 4,800 7,200 9,600 12,000 14,400 16,800 19,200 21,600 24,0000.277778 L/S 27.8 55.6 83.3 111.1 138.9 166.7 194.4 222.2 250.0 277.816.6667 LPM 1,667 3,333 5,000 6,667 8,333 10,000 11,667 13,333 15,000 16,6673.66615 IGPM 367 733 1,100 1,466 1,833 2,200 2,566 2,933 3,300 3,6664.40287 USGPM 440 881 1,321 1,761 2,201 2,642 3,082 3,522 3,963 4,403

0.001 ML/hr 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 10.024 ML/day 2.4 4.8 7.2 9.6 12 14.4 16.8 19.2 21.6 24

Multiplier Unit1 m³/h 1,100 1,200 1,400 1,600 1,800 2,000 2,500 3,000 3,500 4,000

24 m³/day 26,400 28,800 33,600 38,400 43,200 48,000 60,000 72,000 84,000 96,0000.277778 L/S 306 333 389 444 500 556 694 833 972 1,11116.6667 LPM 18,333 20,000 23,333 26,667 30,000 33,333 41,667 50,000 58,333 66,6673.66615 IGPM 4,033 4,399 5,133 5,866 6,599 7,332 9,165 10,998 12,832 14,6654.40287 USGPM 4,843 5,283 6,164 7,045 7,925 8,806 11,007 13,209 15,410 17,611

0.001 ML/hr 1.1 1.2 1.4 1.6 1.8 2 2.5 3 3.5 40.024 ML/day 26.4 28.8 33.6 38.4 43.2 48 60 72 84 96

Multiplier Unit1 PSI 10 20 30 40 50 75 100 125 150 200

6.89476 kPa 69 138 207 276 345 517 689 862 1,034 1,3790.0689476 Bar 0.7 1.4 2.1 2.8 3.4 5.2 6.9 8.6 10.3 13.87.032496 M head 70 141 211 281 352 527 703 879 1,055 1,406

23.066587 Ft head 231 461 692 923 1,153 1,730 2,307 2,883 3,460 4,613

Multiplier Unit1 PSI 250 300 350 400 450 550 600 650 700 750

6.89476 kPa 1,724 2,068 2,413 2,758 3,103 3,792 4,137 4,482 4,826 5,1710.0689476 Bar 17.2 20.7 24.1 27.6 31.0 37.9 41.4 44.8 48.3 51.77.032496 M head 1,758 2,110 2,461 2,813 3,165 3,868 4,219 4,571 4,923 5,274

23.066587 Ft head 5,767 6,920 8,073 9,227 10,380 12,687 13,840 14,993 16,147 17,300

Nov-17 Some values in the charts have been rounded to single or no decimal points

All effort has been made for accurate calculations, reconfirm prior to use

VOLUME FLOW RATE - CAPACITY



PRESSURE

PRESSURE

Minimum Submergence

A submersible borehole/well pump must be submerged at all times.

Identify the flow rate you require and go up the graph to the NPSH curve/line.

Examples:At the nominal flow rate of 80 m³/h the NPSH is 3 metres.

Now use the 3 metres and subtract atmospheric pressure of 9.81 metres.The result is a negative figure which is not acceptable for a pump intake.

NPSH(M) - G(M) + 1M = minimum submergenceNPSHr = Net Positive Suction Head required. G = head of atmospheric pressure. M = metre

If the value calculated is above zero, use that figure and add 1 metre

Note:

Nov-17

Minimum submergence is considered from the bottom of the suction strainer for submersible pumps and from the bottom of the suction bell for vertical line shaft turbine pumps.

The pump suction intake must be sufficiently submerged to prevent cavitation and avoid the formation of vortexes being created on the liquid being pumped.

When a vortex forms, this can cause air to mix with the water being pumped, causing possible cavitation and reduce the pump capacity and can lead to internal damage of the impellers and bowls.To avoid free surface vortex formation, you would use the minimum submergence figure recommended by the manufacturer in their charts.

If the value calulated is less than zero metres, for our submersible pumps we would recommend a minimum submergence 'Y' of 1 metre.

Example: If the NPSH curve shows 12 metres, subtract 9.81 metres which equals 2.2 metres, so the recommened minimum submergence 'Y' would be 3.2 metres. In our charts we would likely state 'Y' as being 3.5 or even 4 metres.

An approximate way to determine the submergence value for a submersible turbine pumps can be based from the NPSH curve;

All effort has been made for accurate calculations, figures and information

Friction Loss Chart for Standard Pipe Column

LOSS OF HEAD IN METRES PER 30 METRES OF COLUMN

76mm

3"32 32 38 50 32 38 50 38 50 64 38 50 64 50 64 76 89 50 64 76 89

19 19 25 32 19 25 32 25 32 38 25 32 38 32 38 45 50 32 38 45 50

1 0.22

2 0.63 0.23

3 1.3 0.17 0.24 0.48

4 2.25 0.29 0.4 0.8 0.11

5 3.25 0.43 0.4 1.2 0.12 0.17

6 4.75 0.62 0.85 1.7 0.15 0.18 0.25

7 6.3 0.82 1.12 2.3 0.2 0.24 0.34 0.14

8 1.04 1.44 2.9 0.25 0.31 0.43 0.13 0.18

9 1.28 1.75 3.6 0.31 0.38 0.52 0.12 0.13 0.23

10 1.52 2.1 4.3 0.37 0.45 0.63 0.145 0.19 0.27

12 2.2 3 5.9 0.53 0.64 0.88 0.19 0.27 0.38

14 2.8 3.8 0.67 0.81 1.13 0.27 0.35 0.49

16 3.5 4.8 0.85 1.04 1.45 0.34 0.44 0.62

18 4.4 1.1 1.3 1.8 0.42 0.55 0.77 0.12

20 5.5 1.3 1.6 2.3 0.53 0.67 0.96 0.15

22 1.6 1.9 2.7 0.63 0.8 1.03 0.15 0.18

24 1.8 2.3 3.2 0.73 0.95 1.33 0.17 0.21

26 2.1 2.6 3.6 0.83 1.08 1.52 0.11 0.2 0.24

28 2.4 2.9 4 0.94 1.2 1.73 0.13 0.23 0.28

30 2.7 3.25 4.6 1.05 1.37 1.95 0.14 0.26 0.32 0.11

35 3.5 4.25 6 1.4 1.8 2.6 0.19 0.34 0.41 0.12 0.15

40 4.6 5.5 1.8 2.35 3.3 0.25 0.43 0.54 0.12 0.15 0.19

45 5.6 2.2 2.85 4.1 0.31 0.53 0.65 0.13 0.15 0.19 0.23

50 2.7 3.4 4.8 0.37 0.64 0.78 0.16 0.19 0.23 0.29 0.09

60 3.7 4.75 0.51 0.86 0.107 0.23 0.26 0.32 0.39 0.11 0.13

70 4.8 0.66 1.14 1.4 0.3 0.35 0.42 0.52 0.12 0.13 0.16 0.18

80 0.88 1.5 1.88 0.39 0.41 0.55 0.68 0.15 0.17 0.2 0.23

90 1.08 1.84 2.3 0.48 0.55 0.67 0.83 0.19 0.21 0.25 0.28

100 1.28 2.24 2.7 0.58 0.65 0.79 1 0.23 0.25 0.3 0.35

120 1.77 3.1 3.7 0.79 0.89 1.1 1.4 0.32 0.35 0.4 0.47

140 2.4 4.1 5 1.05 1.2 1.46 1.8 0.42 0.46 0.54 0.63

160 3 5.1 1.32 1.5 1.86 2.3 0.53 0.59 0.68 0.78

180 3.7 6.2 1.64 1.8 2.3 2.8 0.65 0.71 0.83 0.96

200 4.4 1.95 2.2 2.7 3.4 0.77 0.85 1 1.1

225 5.4 2.4 2.8 3.4 4.2 0.95 1.1 1.2 1.4

250 3 3.4 4.1 5.1 1.2 1.3 1.5 1.8

300 4.2 4.7 5.8 1.7 1.8 2.2 2.5

350 5.6 6.2 2.3 2.5 2.9 3.3

400 7.3 2.9 3.2 3.7 4.3

Notes:

Multiplyl/s 60 lpml/s 3.6 m³/h

Nov-17

100mm4"

125mm5"

150mm6"

TUBE SIZE mm

SHAFT SIZE mm

LITR

ES P

ER S

ECO

ND

For data on column sizes over 300mm diameter, refer to Sterling Pumps

To convert

All effort has been made for accurate calculations, reconfirm prior to use

SIZE

300mm12"

250mm10"

COLUMN

For open line shaft column friction losses use above figures corresponding to the tube size used for enclosed shaft.

200mm8"

Shaft Rating Curves

20 25 32 38 45 50 57 64 70 76 82

1460 0.19 0.32 0.48 0.75 0.93 1.3 1.6 1.9 2.2 2.7 3.1

1770 0.24 0.4 0.56 0.93 1.1 1.5 1.8 2.2 2.6 3.2

2200 0.30 0.5 0.75 1.1 1.4 1.8 2.2 2.6

2900 0.39 0.66 0.95 1.4 1.8

3500 0.46 0.82 1.1

SHAFT Dia (mm)

20 25 32 38 45 50 57 64 70 76 82

kg/m 2.23 3.97 6.21 8.94 12.2 15.9 20.1 23.6 30.1 34.3 42

TUBE Dia (mm)

32 38 50 64 76 76 89 102 125 125 125

kg/m 4.45 5.4 7.47 11.4 15.3 15.3 18.6 22.3 30.9 30.9 30.9

Nov-17

Shaft Size (millimetres)SHAFT FRICTION LOSS in kW

RPM

Shafting and Tubing Weights - kg per linear metre (m)

All effort has been made for accurate calculations and figures

20

25

32

38

0

50

100

150

200

0 1 2 3 4 5 6 7

2900 RPMBefore using the charts, you need to calulate the total down thrust. This includes hydraulic thrust, line shaft weight and the weight of the bowls, shaft and impellers. Weight of bowls, shaft and impeller values can be negligible.

Having calulated the total thrust, the maximum shaft loading can be taken from the chart, using the applicable RPM chart.

An example:Speed = 2900 RPMThrust = 3000 kgShaft = 38mm diameter

Using the chart, the maximum load would be 205 kW

An example:Speed = 2900 RPMThrust = 2000 kgkW required = 55 kW at bowls

Using the chart, the correct shaft size will be 25mm as the loading exceeds the allowable for the 20mm shaft but is less than the allowable for the 25mm shaft.

Thrust in kg x 1000

Max

imum

reco

mm

ende

d kW

For different shaft materials, apply the following multipliers:MATERIAL MULTIPLIER

AISI C1045 HTS 1.0431 Stainless Steel 1.0416 Stainless Steel 0.9316 Stainless Steel 0.8

Shaft diameter in millimetres (mm)

Shaft Rating Curves

Solid line curves: bottom and left scale

Dash line curves: top and right scale

Solid line curves: bottom and left scale

Dash line curves: top and right scale

Nov-17 All effort has been made for accurate calculations and figures

25

32

38

45

0

50

100

150

200

250

0 1 2 3 4 5 6 7 8

2200 RPM

Thrust in kg x 1000

Max

imum

reco

mm

ende

d kW

Shaft diameters in millimetres (mm)

20

25

32

38

0

50

100

150

200

250

0 1 2 3 4 5 6 7 8

3500 RPM

Thrust in kg x 1000

Max

imum

reco

mm

ende

d kW

20

25

32

3845

50

57

64

0 2 4 6 8 10 12

0

100

200

300

400

500

600

700

800

0

10

20

30

40

50

60

70

80

0 1 2 3 4 5 6

1770 RPM

Max

imum

reco

mm

ende

d kW

Thrust in kg x 1000

20

25

32

38

45

50

57

64

0 4 8 12 16

0

100

200

300

400

500

0

20

40

60

80

100

0 1 2 3 4

1460 RPM

Max

imum

reco

mm

ende

d kW

Thrust in kg x 1000

Column & Tube Elongation Chart

80mm 100mm 125mm 150mm 200mm 250mm 300mmkg 3" 4" 5" 6" 8" 10" 12"100 0.07 0.05 0.04 0.03200 0.15 0.11 0.09 0.06300 0.22 0.16 0.13 0.09 0.06400 0.29 0.21 0.17 0.13 0.09500 0.36 0.27 0.21 0.16 0.12 0.06600 0.44 0.32 0.25 0.19 0.13 0.08700 0.51 0.37 0.30 0.23 0.15 0.09 0.09800 0.58 0.43 0.34 0.26 0.17 0.11 0.10900 0.66 0.48 0.38 0.29 0.19 0.12 0.11

1,000 0.73 0.53 0.42 0.32 0.21 0.14 0.121,200 0.88 0.64 0.51 0.39 0.26 0.18 0.151,400 1.02 0.75 0.59 0.45 0.30 0.21 0.181,600 1.17 0.86 0.68 0.52 0.34 0.24 0.201,800 1.31 0.96 0.76 0.58 0.38 0.27 0.232,000 1.46 1.07 0.85 0.64 0.43 0.31 0.252,250 1.20 0.95 0.72 0.48 0.34 0.282,500 1.34 1.60 0.81 0.53 0.38 0.312,750 1.47 1.16 0.89 0.59 0.42 0.343,000 1.60 1.27 0.97 0.64 0.46 0.373,250 1.38 1.05 0.70 0.50 0.413,500 1.48 1.13 0.75 0.53 0.443,750 1.59 1.21 0.80 0.57 0.474,000 1.69 1.29 0.86 0.61 0.504,500 1.90 1.45 0.96 0.69 0.565,000 1.61 1.07 0.76 0.625,500 1.77 1.18 0.84 0.696,000 1.93 1.28 0.91 0.756,500 2.09 1.39 0.99 0.817,000 2.25 1.50 1.07 0.878,000 1.71 1.22 1.009,000 1.92 1.37 1.12

10,000 2.14 1.52 1.2511,000 2.35 1.68 1.3712,000 2.56 1.83 1.5013,000 1.98 1.6214,000 2.13 1.7515,000 2.29 1.8716,000 2.44 2.0018,000 2.74 2.2520,000 2.50

32 38 38 50 64 76 90

(mm)(m)(200 x 10³ Mpa)

(kg)(mm²)

Nov-17

HT = Hydraulic thrust

e =

CSA = Cross Section Area

millimetres (mm) elongation per 30 metres of Column


Figures shown are based on standard pipe column and enclosing tube with nominal ID. For open line shaft column multiple value by 1.3

COLUMN DIAMETER mm -millimetres (inches)HYDRAULIC THRUST

ENCLOSING TUBE DIAMETER mm

L x 1000 x HT x 9.8E x GSA

E = Modulas of elast.L = Shaft lengthe = elongation

Downthrust due to the hydraulic thrust of the pump causes the shaft and column to stretch after the pump is in operation.Unless the impellers can be and are raised off the bottom of the bowlsenough to allow for this stretch plus some running clearences,the impellers will rub, causing the pump to wear and increase kW powerrequired.With the total hydraulic downthrust known and the Column Elongationdetermined from this Chart, the total stretch of the column shaft for thesetting in question can be determined.To find the net elongation subtract from shaft elongation the column elongation.

Shaft Elongation Chart

20mm 25mm 32mm 38mm 45mm 50mm 57mm 64mm 70mm 76mm 82mmkg 3/4" 1" 1-1/4" 1-1/2" 1-3/4" 2" 2-1/4" 2-1/2" 2-3/4" 3" 3-1/4"100 0.52 0.29 0.19 0.13 0.09 0.07 0.06200 1.02 0.58 0.38 0.26 0.19 0.15 0.12 0.09300 1.55 0.87 0.57 0.39 0.28 0.22 0.17 0.14 0.12400 2.07 1.16 0.75 0.52 0.38 0.29 0.23 0.19 0.15 0.13500 2.58 1.45 0.94 0.55 0.47 0.36 0.29 0.23 0.19 0.16 0.14600 3.1 1.74 1.13 0.77 0.57 0.44 0.34 0.29 0.23 0.19 0.17700 3.61 2.04 1.32 0.90 0.66 0.51 0.40 0.33 0.27 0.23 0.19800 4.13 2.33 1.51 1.03 0.76 0.58 0.46 0.37 0.31 0.26 0.22900 4.65 2.62 1.70 1.16 0.85 0.65 0.52 0.42 0.35 0.29 0.25

1,000 5.16 2.91 1.89 1.29 0.95 0.73 0.57 0.47 0.38 0.32 0.281,200 6.42 3.49 2.26 1.55 1.14 0.87 0.69 0.56 0.46 0.39 0.331,400 4.07 2.64 1.81 1.32 1.02 0.80 0.65 0.54 0.45 0.391,600 4.65 3.02 2.07 1.52 1.16 0.92 0.74 0.61 0.52 0.441,800 5.23 3.40 2.32 1.71 1.31 1.03 0.84 0.69 0.58 0.502,000 5.82 3.77 2.58 1.90 1.45 1.15 0.93 0.77 0.65 0.552,250 6.54 4.24 2.90 2.13 1.63 1.29 1.05 0.86 0.73 0.622,500 4.72 3.22 2.37 1.81 1.43 1.16 0.96 0.81 0.692,750 5.19 3.55 2.61 2.00 1.58 1.28 1.06 0.89 0.763,000 5.66 3.87 2.84 2.18 1.72 1.39 1.15 0.97 0.833,250 6.13 4.20 3.08 2.36 1.86 1.51 1.25 1.05 0.893,500 6.60 4.51 3.32 2.54 2.01 1.63 1.34 1.13 0.963,750 4.84 3.56 2.72 2.15 1.74 1.44 1.21 1.034,000 5.16 3.79 2.90 2.29 1.86 1.54 1.29 1.104,500 5.81 4.27 3.27 2.58 2.09 1.73 1.45 1.245,000 6.45 4.74 3.63 2.67 2.32 1.92 1.61 1.385,500 5.21 4.00 3.16 2.56 2.11 1.78 1.516,000 5.69 4.36 3.44 2.79 2.30 1.94 1.656,500 6.16 4.72 3.73 3.02 2.50 2.10 1.797,000 6.64 5.08 4.02 3.25 2.69 2.26 1.938,000 5.81 4.59 3.71 3.07 2.59 2.209,000 6.53 5.16 4.18 3.46 2.90 2.48

10,000 5.74 4.65 3.84 3.23 2.7511,000 6.31 5.11 4.22 3.55 3.0212,000 5.58 4.61 3.87 3.3013,000 6.04 5.00 4.20 3.5714,000 6.51 5.38 4.52 3.8515,000 5.76 4.84 4.1216,000 6.14 5.16 4.4018,000 5.81 4.9520,000 6.45 5.50

e = elongationL = Shaft lengthE = Modulas of elast.HT = Hydraulic thrustCSA = Cross Section Area

Nov-17

e =

(200 x 10³ Mpa)

(mm)(m)

(kg)(mm²)


millimetres (mm) elongation per 30 metres of Shaft

HYDRAULIC THRUST

SHAFT DIAMETER mm -millimetres (inches)

L x 1000 x HT x 9.8E x GSA

Figures shown are based on Grade CS 1040 Carbon steel.For grades of 300 series stainless steel multiple value by 1.3

Downthrust due to the hydraulic thrust of the pump causes the shaft andcolumn to stretch after the pump is in operation.Unless the impellers can be and are raised off the bottom of the bowls enoughto allow for this stretch plus some running clearences, the impellers will rub, causing the pump to wear and increase kW power required.With the total hydraulic downthrust known and the Shaft Elongation determinefrom this Chart, the total stretch of the column shaft for the setting in questioncan be determined.To find the net elongation subtract from shaft elongation the column elongation

STERLINGPUM PS

Notes

Sterling Pumps Pty Ltd14 Sharnet Circuit, Pakenham, VIC, 3810

P: 03 5941 3400 F: 03 5940 [email protected]

www.sterlingpumps.com.au

STERLINGPUM PS

SPA036 08/18

STERLINGPUM PS

ax - axial flow · ax - axial flow mx - mixed flow vertical line shaft turbines 8″ to 20″...

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