VETUS Type 6 Coupling

SVB item number: 63433 Manufacturer no.: KO54
Type 6 coupling for mounting to the propeller shaft with a special conical clamping hub. Bolt kit and rubber buffer are sold separately.
Product details
only  €379.50
Expected to be in stock within 4-6 days
pcs.
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Product data

  • SVB item number 63433
  • EAN 8717372077395
  • Manufacturer no. KO54
  • Description Coupling type 6 with pilot hole
  • For shaft 20 mm
  • Accessories for Inboard engines

Accessories

Image of Bolt set for coupling type 6
VETUS Bolt set for coupling type 6
from €15.95
Image of Rubber Buffer for Type 6 Coupling / KO51 / KO52 / KO53 / KO54
VETUS Rubber Buffer for Type 6 Coupling / KO51 / KO52 / KO53 / KO54
only €30.50

Product details

Type 6 coupling can be mounted to the propeller shaft with a special conical clamping hub. No cone needs to be screwed onto the shaft. The coupling is pre-drilled with a mounting hole for 4-inch and 5-inch connection flanges on the gearbox (suitable for Hurth, Paragon and Velvet reversing gearboxes). Matching mounting bolts are sold separately. Load capacity (max. motor power): 5.3 hp per 100 rpm at the shaft. Outer Ø: 138 mm, total length: 86 mm.

Find the right coupling in three steps.
1st step: First check the engine horsepower.
2nd step: What is the reduction ratio?
Here is an example using a 55 hp engine with 3600 rpm and a reduction ratio of 2:1.
Step 3: Calculate as follows: 3600 rpm / 2 (reduction ratio 2:1) = 1800 rpm / 100 rpm * 5.3 (load capacity of the coupling) = 95.4 hp max. power. Type 6 coupling is therefore suitable.

Overview table
Coupling type RPM recommended Gear reduction Maximum power
TYPE 6 3600 RPM 2:1 91 HP
TYPE 6 3600 RPM 2.5:1 88 HP

Available in different versions. A mounting bolt set for 4 inch or 5 inch flanges and rubber buffers available separately.

Documents

de-flag Datasheet
PDF (145,06 KB)

Systems

Product safety

What other SVB customers have to say

100% real reviews

11 customer reviews

Martin H.
by Martin H. Flag of Germany 10/27/2014 Verified purchase Variant: 63436
hopefully everything will be available for a long time
Anonymous
by Anonymous 8/1/2012
very well
Sabrina S.
by Sabrina S. Flag of Germany 5/1/2011
Schnell geliefert und reibungsloser Ablauf
Erich T.
by Erich T. Flag of Switzerland 9/20/2025 Verified purchase Variant: 63432 in use on a Chantiers Amel - Amel Super Maramu
Coupling Type 6 no longer has the old dimensions
We were able to reassemble the two coupling shells of this coupling with the part of the old coupling, which has a different shaft flange, into a functioning unit. Unfortunately, Vetus doesn't seem to offer spare parts for this coupling, only the rubber buffers, which are considered wear parts. It would be nice if VETUS offered spare parts like they do for newer couplings.
Alexandre G.
by Alexandre G. Flag of Portugal 5/20/2023 Verified purchase Variant: 63431
I was expecting more from this product, the holes for the screws that attach the flange, at the same radius, did not have the same size, so I end up measuring and drilling it to the same size. Also where it is supposed the flange adapter join together there were some leftovers of metal that didn't allow fit perfectly.
This coupling looks strong, and it is easy to install.

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Customers ask customers

General question
Eduard S. | Feb 18, 2018 Flag of English
User image of Eduard S.

Are there rubber buffers inside already or I have to buy those separately? It is not clear from the description. Thanks

Answer from SVB customer service
Christoph L. | Aug 21, 2018
User image of Christoph L.

The rubber buffers are already inside. You can also purchase these parts separately as a spare part from us.

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VETUS Type 6 Coupling
For shaft 20 mm