Print Version

In-Line Gear Reducers
Space Saving Compact Designs with Hundreds of Ratios to Choose From

Materials of Construction
  • Aluminum (Sizes 11 - 31)
  • Cast Iron (Sizes 35 - 100)
Design Features
Viking offers eleven sizes of in-line, double reduction gear reducers to reduce standard driver speeds to match pump (or other driven equipment) requirements.  With the in-line design, the input (high speed) shaft is on the same centerline as the output (slow speed) shaft.  All sizes are available with solid input shaft, and sizes 11 through 60 are available with NEMA C-flange motor mount or IEC flange motor mount on the input side.
Performance
Ratios 2.63:1 to 38.0:1 2.63:1 to 38.0:1
Output Speed 551 - 38 (50Hz, 4 pole) 665 - 46 (60Hz, 4 pole)
Power 0.37 - 261 kW 0.5 - 350 HP
Specifications

60 Hz Motor Speeds

Size

Number of Ratios

Ratio Range

1750 RPM

1150 RPM

HP Range

Output RPM Range

HP Range

Output RPM Range

11

15

2.77:1 to 22.9:1

3.4 - 0.96

632 - 76

2.5 - 0.70

415 - 50

21

15

2.72:1 to 21.9:1

7.7 - 2.4

643 - 80

5.7 - 1.5

423 - 52

31

15

2-88:1 to 22.6:1

11.6 - 3.4

608 - 77

8.4 - 2.2

399 - 57

35

14

2.69:1 to 19.0:1

16.2 - 5.2

651 - 92

11.4 - 3.2

427 - 60

41

18

2.69:1 to 31.4:1

23.5 - 4.1

651 - 56

14.8 - 2.6

427 - 37

51

18

2.63:1 to 33.0:1

39.8 - 6.2

665 - 53

25.0 - 3.9

437 - 35

61

20

2.82:1 to 38.0:1

50.8 - 9.2

621 - 46

32.8 - 5.8

408 - 30

70

16

4.57:1 to 34.7:1

95.3 - 15.7

383 - 50

63.5 - 9.8

252 - 33

80

17

5.64:1 to 31.3:1

143 - 30.5

310 - 56

101 - 19.2

204 - 37

90

19

5.17:1 to 35.1:1

217 - 39.8

338 - 50

153 - 25.0

222 - 33

100

17

4.92:1 to 29.6:1

359 - 74.0

356 - 59

259 - 50.0

234 - 39

50 Hz Motor Speeds

Size

Number of Ratios

Ratio Range

1450 RPM

950 RPM

kW Range

Output RPM Range

kW Range

Output RPM Range

11

15

2.77:1 to 22.9:1

2.2 - 0.62

523 - 63

1.4 - 0.39

343 - 41

21

15

2.72:1 to 21.9:1

5.0 - 1.4

533 - 66

3.2 - 0.82

349 - 43

31

15

2-88:1 to 22.6:1

7.4 - 2.1

503 - 64

4.7 - 1.2

330 - 47

35

14

2.69:1 to 19.0:1

10.3 - 3.1

539 - 76

6.4 - 1.8

353 - 50

41

18

2.69:1 to 31.4:1

14.2 - 2.5

539 - 46

8.2 - 1.4

353 - 30

51

18

2.63:1 to 33.0:1

24.1 - 3.8

551 - 44

14.0 - 2.2

361 - 29

61

20

2.82:1 to 38.0:1

31.2 - 5.6

514 - 38

18.3 - 3.2

337 - 25

70

16

4.57:1 to 34.7:1

59.2 - 9.5 

317 - 42

35.5 - 5.5

208 - 27

80

17

5.64:1 to 31.3:1

91.0 - 18.5

257 - 46

56.9 - 10.7

168 - 30

90

19

5.17:1 to 35.1:1

137 - 24.1

280 - 41

85.8 - 14.0

184 - 27

100

17

4.92:1 to 29.6:1

230 - 46.3

144 - 27.9

144 - 27.9

193 - 32

Literature

Model

Drawing*

Service Manual

Brochure

Catalog

All 11 Ratios

Inch

English
Chinese
Deutsch
Español
Français
Italiano
Português
Russian

English
Chinese
Deutsch
Español
Français
Italiano
Português
Russian

English

All 21 Ratios

Inch

All 31 Ratios

Inch

All 35 Ratios

Inch

All 41 Ratios

Inch

All 51 Ratios

Inch

All 61 Ratios

Inch

All 70 Ratios

Inch

All 80 Ratios

Inch

All 90 Ratios

Inch

All 100 Ratios

Inch

*Drawings are for solid input shaft models only.  C-flange motor mount drawings can be found in the catalog.

Latest News

Crown Point Productions announces that Viking Pump will be part of its "World's Greatest!..." series  Read...

The SG Series External Gear Pumps are designed to ensure reliability in industrial applications through an extensive range of sizes and options with pressure capabilities up to 172 Bar (2500 PSI).  Read...

Universal Mag Drive series can reduce maintenance and
environmental costs by eliminating the pump shaft seal saving you more than 50% of the total pump, parts and downtime cost in one year.  Read...