 |
|
Newage PRM
Marine Transmissions - PRM1750 |
|
|
 |
PRM1750 |
|
|
|
|
PRM1750 series marine
transmissions are the ideal
choice for pleasure and
commercial craft applications
with engines rated at up to 620
hp (463 kW). |
 |
|
|
|
|
Nominal Power Ratings - PRM1750
Deep Case Marine Gearbox |
| |
|
Pleasure |
Light
Commercial |
Heavy
Commercial |
Continuous |
|
MODEL
|
Gear
Ratios |
BHP
|
kW
|
BHP
|
kW
|
BHP
|
kW
|
BHP
|
kW
|
1750D31SAE1
1750D31SAE2 |
3.12:1
|
24.58
|
18.33
|
22.85
|
17.04
|
21.13
|
15.76
|
18.27
|
13.63
|
1750D39SAE1
1750D39SAE2 |
3.88:1
|
24.58
|
18.33
|
22.85
|
17.04
|
21.13
|
15.76
|
18.27
|
13.63
|
1750D45SAE1
1750D45SAE2 |
4.50:1
|
24.58
|
18.33
|
22.85
|
17.04
|
21.13
|
15.76
|
18.27
|
13.63
|
1750D49SAE1
1750D49SAE2 |
4.90:1
|
22.48
|
16.76
|
20.89
|
15.58
|
19.32
|
14.41
|
16.72
|
12.47
|
|
|
|
Ratings are
based upon engines with a maximum operating
speed of 2500 rev/min |
|
|
|
Note: These
powers are expressed in BHP and kW per 100
rev/min engine speeds, and are measured at
the engine flywheel. Ratings have been
established to ensure the long, trouble-free
life of the gearbox and should not
therefore, be exceeded. |
|
Note: D denotes
Deep Case: manufactured only with integral
SAE1 or SAE2 adaptor housings. |
|
|
|
Nominal Power
Ratings - PRM1750 Shallow Case Marine
Gearbox |
| |
|
Pleasure |
Light Commercial |
Heavy Commercial |
Continuous |
|
MODEL
|
Gear Ratios |
BHP |
kW |
BHP |
kW |
BHP |
kW |
BHP |
kW |
|
1750S12SAE3
|
1.22:1 |
24.58 |
18.33 |
22.85 |
17.04 |
21.13 |
15.76 |
18.27 |
13.63 |
|
1750S15SAE3
|
1.56:1 |
24.58 |
18.33 |
22.85 |
17.04 |
21.13 |
15.76 |
18.27 |
13.63 |
|
1750S19SAE3
|
1.94:1 |
24.58 |
18.33 |
22.85 |
17.04 |
21.13 |
15.76 |
18.27 |
13.63 |
|
1750S22SAE3
|
2.25:1 |
24.58 |
18.33 |
22.85 |
17.04 |
21.13 |
15.76 |
18.27 |
13.63 |
|
1750S24SAE3
|
2.45:1 |
24.58 |
18.33 |
22.85 |
17.04 |
21.13 |
15.76 |
18.27 |
13.63 |
|
1750S30SAE3
|
3.00:1 |
24.58 |
18.33 |
22.85 |
17.04 |
21.13 |
15.76 |
18.27 |
13.63 |
|
|
Ratings are
based upon engines with a maximum operating
speed of 2500 rev/min |
|
|
|
Note:
These powers are expressed in BHP and kW per
100 rev/min engine speeds, and are measured
at the engine flywheel. Ratings have been
established to ensure the long, trouble-free
life of the gearbox and should not
therefore, be exceeded. |
|
Note:
S denotes Shallow Case: manufactured only
with integral SAE3 adaptor housings. |
|
|
|
PRM1750 -
Full Hydraulic Operation - Drop Center
Output Shaft Two Stage Reduction Gearing |
-
PRM1750 series marine
transmissions are the ideal
choice for pleasure and
commercial craft
applications with engines
rated at up to 620 hp (463
kW).
-
They are available in both
shallow and deep case form -
corresponding to reduction
ratios ranging from 1.22:1
to 3.0:1 and 3.12:1 to 4.9:1
respectively - and are
supplied with integral SAE
housings as standard.
-
All PRM1750 series
transmissions feature a twin
countershaft design
compatible with left or
right hand propeller
rotations - making them
equally suitable for both
single or twin engine
installations. In addition,
the PRM1750's two-stage
reduction gearing enables
maximum input torque of 1750
Nm to be transmitted
continuously in either
direction at engine speeds
of up to 2500 rev/min.
|
|
|
PRM1750 -
Service Classification Definitions -
Pleasure |
-
Limited to planing hull
pleasure craft with a
maximum of 500 hours
operating time per year, of
which not more than 5%
should be at full engine
throttle, with the balance
of usage at 90% or less of
full throttle. The use of
PRM marine gearboxes
according to this
classification in any
commercial boat, or in
sport-fishing charter boats
or long-range pleasure
cruisers, is not approved.
|
|
|
PRM1750 -
Service Classification Definitions - Light
Commercial |
-
Planing or semi-displacement
craft used in pleasure or
commercial application may
qualify for light commercial
rating if annual usage is
less than 1500 hours and
full throttle operation is
limited, with most operating
time at partial throttle.
|
|
|
PRM1750 -
Service Classification Definitions - Heavy
Commercial |
-
All displacement and
semi-displacement craft used
for commercial applications
should be classified as
heavy commercial duty. In
this type of vessel (such as
trawlers, purse seiners,
lobster and crab boats,
tugs, ferries, offshore
supply boats etc.) the
gearbox is expected to work
at full governed engine
speed. The power setting of
the engine must be known and
must be within the permitted
heavy commercial rating of
the gearbox.
|
|
|
Important to
Note: |
-
It is essential for the
engine, transmission model,
reduction ratio and
propeller size to be
correctly matched so that
the engine can attain its
rated speed appropriate to
the relevant service
classification without
labouring.
-
It is also necessary to
ensure the torsional
compatibility of the
complete propulsion system
from engine through to
propeller, since
disregarding this may result
in gear noise, particularly
at low speed operation, and
may even result in damage to
the engine as well as the
transmission components.
-
Trans Atlantic Diesels will
provide all possible
information and assistance
to help find solutions to
potential torsional
problems, but it is the
ultimate responsibility of
the person assembling the
drive and driven equipment
to ensure that they are
torsionally compatible.
|
|
|
|
|
|
|
|
|
|
|
|
|
Back to
Newage PRM Marine Transmissions |
|
|
|
|
|
|
