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Bobbin Prop Shaft Spacer, 202-250
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R&D Marine 6" Bobbin Shaft Coupling

Part No. 808006

€179.64 You pay €179.64 Incl VAT You pay €149.70 Excl VAT

RRP €194.20 €161.83

Save €14.56 (7.5%) Save €12.13 (7.5%)


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Brand R&D Marine
Country of Origin United Kingdom
Model 202-250
Applications 6" nominal gearbox flanges of Newage PRM, Borgwarner Velvet Drive, ZF - Hurth gearboxes.
Gearbox Output Coupling Diameter 5.75" (146mm)
Coupling PCD 4.75" (120.6mm)
Number of Fixing Holes 6
Coupling Register Diameter 3.00" (76.2mm)
Register Gender Male one end and Female the other end.
Length 5.86"

A bobbin coupling is a double flange coupling, which is used to extend the boat propeller shaft.
They can also be used for making a double flexible coupling with two R&D type flexible couplings. This can provide excellent noise and vibration control, at a very reasonable price.

The 6" R&D bobbin coupling is machine from steel, and the flanges will suit gearbox flanges (5.75") for PRM, Borgwarner Velvet Drive, ZF and Twin Disc gearbox.

Bobbin coupling dimensions:
a - Flange outside diameter = 5.75"
b - Hole pitch circle = 4.75"
c - Number of holes = 6
d - Hole size = 0.50"
e - Register diameter = 3.00" male on one flange and female on the other
f - Bobbin coupling length = 5.86"
g - Bobbin neck diameter = 4.25"

Bobbin Shaft Coupling Dimensions Diagram

R & D Marine Bobbin shaft coupling spacer number 202-250

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