VETUS STERNGEAR

All Vetus propeller shafts are made of Remanit 4462. As far as corrosion resistance is concerned, Remanit 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 Remanit 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:

A tapered, straightened and polished Remanit 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)
Outer bearing with incorporated rubber bearing soldered to bronze stern tube
Mounting flange for outer bearing
Mounting flange for stern tube
Flexible stuffing box with rubber sleeve for shaft
Propeller

Shaft assemblies with stuffing box (25/30/35/40mm)

Water lubricated shaft assemblies with self-aligning inner bearing and a stuffing box are available "off the shelf".

Propshaft: Diameter	Standard lengths (mm)	Taper length (mm)	Propeller nut
25mm	1000 / 1500 / 2000 / 2500	55	M16 x 1.5
30mm	1000 / 1500 / 2000 / 2500	75	M20 x 1.5
35mm	On request	85	M24 x 2
40mm	On request	95	M24 x 2
Sterntube	Standard lengths (mm)	Outer diameter (mm)	Length behind flange (mm)
For 25mm propshaft	500 / 1000 / 1500 / 2000	40	88
For 30mm propshaft	500 / 1000 / 1500 / 2000	44	105
For 35mm propshaft	On request	48	117
For 40mm propshaft	On request	54	133

Shaft assemblies with dual shaft seal (25/30mm)

For use with less powerful engines, Vetus have designed and developed a shaft assembly - with shaft diameters of 25 mm or 30mm - 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 either bronze or GRP.

Propshaft: Diameter	Standard lengths (mm)	Taper length (mm)	Propeller nut
25mm	1000 / 1500 / 2000	55	M16 x 1.5
30mm	1000 / 1500 / 2000	75	M20 x 1.5
Sterntube	Standard lengths (mm)	Outer diameter (mm)	Length behind flange (mm)
For 25mm propshaft	500 / 1000 / 1500	43	88
For 30mm propshaft	500 / 1000 / 1500	49.5	105

Shaft assemblies with dual shaft seal (35/40/45/50mm)

These assemblies have bronze stern tubes for installation into GRP vessels and have a stern mounting flange. 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	Standard lengths (mm)	Taper length (mm)	Propeller nut
35mm	On request	85	M24x2
30mm	On request	95	M24 x 2
45mm	On request	105	M30x2
50mm	On request	115	M36 x 3
Sterntube	Standard lengths (mm)	Outer diameter (mm)	Length behind flange (mm)
For 35mm propshaft	On request	57	117
For 40mm propshaft	On request	62	133
For 45mm propshaft	On request	72	145
For 50mm propshaft	On request	77	162

Shaft assemblies with dual shaft seal (35/40/45/50mm)

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	Standard lengths (mm)	Taper length (mm)	Propeller nut
35mm	On request	85	M24x2
30mm	On request	95	M24 x 2
45mm	On request	105	M30x2
50mm	On request	115	M36 x 3
Sterntube	Standard lengths (mm)	Outer diameter (mm)	Length behind tube (mm)
For 35mm propshaft	On request	60	10
For 40mm propshaft	On request	63.5	12
For 45mm propshaft	On request	70	12
For 50mm propshaft	On request	76	15

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.

Three 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

Diameter P3B	Diameter P3C	Diameter P4E	Largest diameter	Smallest diameter	Hub length	Keyway width
12" - 15"	12" - 15"	-	25mm	19mm	60mm	8mm
16" - 18"	16" - 18"	-	30mm	22mm	80mm	8mm
19" - 21"	19" - 21"	18" - 20"	35mm	26mm	90mm	10mm
22" - 24"	22" - 24"	21" - 22"	40mm	30mm	100mm	12mm
25" and	25" and	23" - 24"	45mm	34mm	110mm	12mm
upwards	upwards	-	50mm	38mm	120mm	14mm

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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