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PRM Gearbox Ratings Chart
 PRM Intro  PRM80  PRM120  PRM150  PRM260  PRM500  PRM750  PRM1000  PRM1500  PRM1750  PRM Ratings  Trolling-Valve  PTOs  Older-Models

 

Model

Shaft Arrangement

Ratio Ahead/Astern

Max Input Speed rev/min

Nominal Power Ratings
Per 100 rev/min

Continuous Intermittent Pleasure Light Commercial Heavy Commercial
kW BHP kW BHP kW BHP
PRM80 Offset 2.04:1 5000 - 0.84 1.12 0.55 0.74 - -
2.50: 5000 - 0.73 0.98 0.48 0.65 - -
PRM120 Offset 2.04:1 5000 - 1.25 1.67 0.68 0.91 - -
2.50:1 5000 - 1.00 1.34 0.68 0.91 - -
2.94:1 5000 - 0.83 1.11 0.58 0.77 - -

PRM150
Offset		 1.53:1 4500 5000 1.6 2.1 1.1 1.5 - -
2.09:1 4500 5000 1.6 2.1 1.1 1.5 - -
2.82:1 4500 5000 1.6 2.1 1.1 1.5 - -
PRM260 Offset & In-line 1.963.1 4000 4500 2.72 3.65 2.51 3.36 2.31 3.08
2.941:1 4000 4500 2.72 3.65 2.51 3.36 2.31 3.08

PRM500
Offset		 1.459:1 4000 4500 4.76 6.38 4.62 6.19 4.40 5.90
1.935:1 4000 4500 4.76 6.38 4.62 6.19 4.40 5.90
2.565:1 4000 4500 4.62 6.19 4.40 5.90 4.40 5.90
2.904:1 4000 4500 4.62 6.19 4.40 5.90 4.40 5.90

PRM750


8° Down Angle		 1.09:1 4000 4500 7.17 9.62 5.68 7.62 5.39 7.23
1.459:1 4000 4500 7.17 9.62 5.68 7.62 5.39 7.23
1.935:1 4000 4500 7.07 9.48 5.68 7.62 5.39 7.23
2.565:1 4000 4500 7.07 9.48 5.68 7.62 5.39 7.23
2.904:1 4000 4500 5.96 8.00 5.60 7.51 5.24 7.02
PRM750 Offset & In-line

3.95:1 In-Line
Not Available		 1.09:1 4000 4500 7.85 10.52 6.07 8.13 5.86 7.85
1.459:1 4000 4500 7.85 10.52 6.07 8.13 5.86 7.85
1.935:1 4000 4500 7.07 9.46 5.86 7.85 5.55 7.43
2.565:1 4000 4500 7.07 9.46 5.86 7.85 5.55 7.43
2.904:1 4000 4500 5.96 8.00 5.60 7.50 5.24 7.02
3.952:1 4000 4500 5.96 8.00 5.60 7.50 5.24 7.02
PRM1000D Offset Only 1.528:1 3000 3500 10.47 14.04 7.75 10.39 7.33 9.82
2.033:1 3000 3500 9.43 12.64 7.44 9.96 7.02 9.40
2.857:1 3000 3500 8.58 11.50 7.44 9.96 7.02 9.40
4.000:1 3000 3500 8.58 11.50 7.44 9.96 7.02 9.40
PRM1000A 10° Down Angle 1.528:1 3000 3500 9.66 12.95 7.10 9.52 6.67 8.95
2.033:1 3000 3500 9.43 12.64 7.10 9.52 6.67 8.95
2.857:1 3000 3500 8.58 11.50 7.10 9.52 6.67 8.95
PRM1500D Offset 3.12:1 2500 3000

15.70

21.06

14.65

19.65

13.63

18.28
3.88:1 2500 3000

15.70

21.06

14.65

19.65

13.63

18.28
4.50:1 2500 3000

15.70

21.06

14.65

19.65

13.63

18.28
4.90:1 2500 3000 13.63 18.28

12.58

16.87

11.53

15.46
PRM1500S Offset 1.22:1, 1.56:1 2500 3000

15.70

21.06

14.65

19.65

13.63

18.28
1.94:1, 2.25:1 2500 3000

15.70

21.06

14.65

19.65

13.63

18.28
2.45:1 2500 3000

15.70

21.06

14.65

19.65

13.63

18.28
3.0:1 2500 3000 14.12 18.93

13.07

17.52

11.76

15.77
PRM1750D Offset 3.12:1 2500 3000

24.58

18.33

22.85

17.04

21.13

15.76
3.88:1 2500 3000

24.58

18.33

22.85

17.04 

21.13 

15.76
4.50:1 2500 3000

24.58

18.33

22.85

17.04

21.13

15.76
4.90:1 2500 3000 22.48 16.76

20.89

15.58

19.32 

14.41
PRM1750S Offset 1.22:1, 1.56:1 2500 3000

24.58

18.33

22.85

17.04 

21.13 

15.76
1.94:1, 2.25:1 2500 3000

24.58

18.33

22.85

17.04 

21.13

15.76
2.45:1 2500 3000

24.58

18.33

22.85

17.04 

21.13 

15.76
3.0:1 2500 3000 24.58 18.33

22.85

17.04 

21.13

15.76
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All information given in this website is correct at the time of publication.   However in the interests of technical progress, design specifications are subject to change without notice.  Accordingly, data given herein should be regarded as a general guide only and does not form part of any contract.  All goods are supplied in accordance with our standard terms and conditions of sale.
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last updated 31st May 2005