Vetus Sterngear Systems


As important as a reliable engine!

As far as corrosion resistance is concerned, Duplex 1-4462 is equivalent to stainless steel, type AISI 316. However, it has a tensile strength which is about 30% higher and a hardness of about 40% higher then AISI 316. It is exactly this high degree of hardness which gives Duplex 1-4462 its excellent running properties in bearings. Moreover, it offers much more resistance against wear and tear in the way of bearings and seals. (Please note that older Vetus shafts were fabricated from Remanit 4418 which had different comparisons with AISI 316).

A Vetus propeller-shaft assembly consists of:

  1. A tapered, straightened and polished Duplex 1-4462 stainless steel propeller shaft with keyway, thread, lock washer, key and propeller nut with integrated zinc anode. All shaft tapers and keyways have dimensions in accordance with ISO 4566 (1:10 taper)
  2. Outer bearing with incorporated rubber bearing soldered to bronze stern tube
  3. Mounting flange for outer bearing
  4. Mounting flange for stern tube
  5. Flexible stuffing box with rubber sleeve for shaft
  6. Propeller

Water lubricated stern gear

Vetus have designed and developed a shaft assembly which can be installed with a minimum of fuss. Machining, threading and keyway cutting have all been taken care of. In addition, these shaft assemblies protect the environment: lubrication is ensured by means of raw water, without use of grease or oil. The stern tube is provided with a dual shaft seal, eliminating the need for a stuffing box. The stern tube may be supplied in GRP, bronze or steel.

Propshaft:
Diameter
Standard shaft
lengths (mm)
Propeller nut Standard stern
tube lengths (mm)
Stern tube
outer diameter
Inner bearing
25mm 1000/1500/2000
longer lengths to order
M16 x 1.5 500/1000
longer lengths to order
GRP - 44mm
Bronze - 43mm
Steel - 51mm
Dual lip seal
30mm 1000/1500/2000/2500
longer lengths to order
M20 x 1.5 500/1000
longer lengths to order
GRP - 50mm
Bronze - 49.5mm
Steel - 54mm
Dual lip seal
35mm 1000/1500/2000/2500
longer lengths to order
M24 x 2 1000
longer lengths to order
Bronze - 57mm
Steel - 60mm
Dual lip seal
40mm 1000/1500/2000/2500
longer lengths to order
M24 x 2 1000
longer lengths to order
Bronze - 62mm
Steel - 63.5mm
Dual lip seal
45mm 1000/1500/2000/2500
longer lengths to order
M30 x 2 1000
longer lengths to order
Bronze - 72mm
Steel - 70mm
Dual lip seal
50mm 1000/1500/2000/2500
longer lengths to order
M36 x 2 1000
longer lengths to order
Bronze - 77mm
Steel - 76mm
Dual lip seal

Please contact us for further information and prices.

Propellers

A ship's propeller is possibly the most important component of a motorboat. Vetus make good use of a specially developed computer programme which ensures the determination of the exactly right propeller for your boat, with the aid of some (correct!) inormation which is required from the customer.

Five types of managnese-bronze propeller are available:

P3B: 3-blade suitable for displacement craft with speeds of up to 10 knots
P3C: 3-blade suitable for faster craft
P4E: 4-blade suitable for semi-planing boats with speeds of more than 16 knots
P4G: 4-blade suitable for semi-planing boats with speeds of more than 16 knots
P5E: 5-blade suitable for semi-planing boats with speeds of more than 16 knots

Shaft diameter P3B prop
diameter
P3C prop
diameter
P4E prop
diameter
P4G prop
diameter
P5G prop
diameter
Shaft taper Keyway
25mm 12" - 15" 12" - 15" 14" - 15" - - 1:10 8mm
30mm 16" - 18" 16" - 18" 16" - 17" On request On request 1:10 8mm
35mm 19" - 21" 19" - 21" 18" - 20" On request On request 1:10 10mm
40mm 22" - 24" 22" - 24" 21" - 22" On request On request 1:10 12mm
45mm 25" 25" 23" - 24" On request On request 1:10 14mm
50mm greater
than 25"
greater
than 25"
- On request On request 1:10 14mm

Please contact us for further information and prices.

Cutlass bearings

Vetus water lubricated cutlass bearings have a polyurethane-rubber lining and can be supplied with outer bearings made of either bronze or phenolic resin. Phenolic is lighter in weight and can not corrode: these are ideally suited for installation into aluminium boats and they can be replaced very easily. Vetus rubber bearings are, upon request, also available for larger shaft diameters and for other combinations of dimensions.

Propshaft diameter Stern tube internal diameter Overall bearing length Materials
25mm 40mm 100mm Bronze / Phenolic
25mm 1 1/2" 4" Bronze / Phenolic
1" 1 1/2" 4" Bronze / Phenolic
1 1/8" 1 5/8" 4 1/2" Bronze / Phenolic
30mm 45mm 120mm Bronze / Phenolic
30mm 1 3/4" 5" Bronze / Phenolic
1 1/4" 1 3/4" 5" Bronze / Phenolic
35mm 50mm 140mm Bronze / Phenolic
1 3/8" 1 7/8" 5 1/2" Bronze / Phenolic
35mm 1 7/8" 5 1/2" Bronze / Phenolic
1 1/2" 2" 6" Bronze / Phenolic
40mm 55mm 160mm Bronze / Phenolic
40mm 2 1/8" 6 1/2" Bronze / Phenolic
1 5/8" 2 1/8" 6 1/2" Bronze / Phenolic
45mm 65mm 180mm Bronze / Phenolic
45mm 2 3/8" 7" Bronze / Phenolic
1 3/4" 2 3/8" 7" Bronze / Phenolic
50mm 70mm 200mm Bronze / Phenolic
50mm 2 5/8" 8" Bronze / Phenolic
2" 2 5/8" 8" Bronze / Phenolic
60mm 80mm 240mm Bronze / Phenolic
2 1/4" 3" 9" Bronze / Phenolic
60mm 3 1/4" 9 1/2" Bronze / Phenolic
2 1/2" 3 1/4" 10" Bronze / Phenolic
70mm 90mm 280mm Bronze / Phenolic
70mm 3 1/2" 11" Bronze / Phenolic
2 3/4" 3 1/2" 11" Bronze / Phenolic
80mm 100mm 320mm Bronze / Phenolic
80mm 4" 12" Bronze / Phenolic
3" 4" 12" Bronze / Phenolic
90mm 110mm 360mm Bronze / Phenolic
3 1/2" 4 1/2" 14" Bronze / Phenolic
100mm 125mm 400mm Bronze / Phenolic
4" 5" 16" Bronze / Phenolic

Please contact us for further information and prices.


Flexible shaft couplings

These assemblies have steel stern tubes for installation into steel vessels and may be welded into place. The stern tube is provided with a dual shaft seal and lubrication is ensured by means of raw water, without use of grease or oil.

Propshaft:
Diameter
Material Standard lengths
(mm)
Taper length
(mm)
Propeller nut
25mm Stainless steel
1-4462
1000/1500/2000/2500
longer lengths to order
55 M16x1.5
30mm Stainless steel
1-4462
1000/1500/2000/2500
longer lengths to order
75 M20x1.5
35mm Stainless steel
1-4462
To order 85 M24x2
40mm Stainless steel
1-4462
To order 95 M24x2
45mm Stainless steel
1-4462
To order 105 M30x2
50mm Stainless steel
1-4462
To order 115 M36x3

Sterntube Material Standard lengths
(mm)
Outer diameter
(mm)
Length behind tube
(mm)
For 25mm propshaft Steel To order 51 8
For 30mm propshaft Steel To order 54 10
For 35mm propshaft Steel To order 60 10
For 40mm propshaft Steel To order 63.5 12
For 45mm propshaft Steel To order 70 12
For 50mm propshaft Steel To order 76 15

Note: all specifications are subject to change without notice. Please contact us for details of prices and any further information, full details are available in the current Vetus catalogue which you can request online.


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