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Shaft Coupling, Solid Prop Shaft Half Coupling 202-027
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R&D Marine 5" Short Solid Half Coupling Pilot Bored

Part No. 808500

£50.28 You pay £50.28 Incl VAT You pay £41.90 Excl VAT

RRP £54.36 £45.30

Save £4.08 (7.5%) Save £3.40 (7.5%)


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Brand R&D Marine
Country of Origin United Kingdom
Model 202-027
Applications 5" nominal gearbox flanges of PRM, Borgwarner Velvet Drive, ZF, Hurth, Technodrive & Volvo gearboxes.
Gearbox Output Coupling Diameter 5.00" / 127mm
Coupling PCD 4.25" / 107.9mm
Number of Fixing Holes 4
Coupling Register Diameter 2.50" / 63.5mm
Register Gender Male
Shaft Size Pilot Bored
Length 2.16"
Replaces PRM coupling MT771.

This solid half coupling is machined from solid steel and mates with the gearbox output coupling to connect a boat propeller shaft to the gearbox, usually via a flexible coupling.

This solid shaft half coupling is pilot bored and needs to be machined to suit the boat propeller shaft diameter.

Typical applications include:
5" nominal gearbox flanges of PRM, Borgwarner Velvet Drive, ZF, Hurth, Technodrive and Volvo gearboxes.
Replaces PRM coupling MT771

Coupling dimensions:
a - Flange outside diameter = 5.00"
b - Hole pitch circle = 4.25"
c - Number of holes = 4
d - Hole size = 0.44"
e - Register diameter = 2.50" male
f - Coupling length = 2.16"
g - Coupling boss diameter = 3.3"
h - Pilot bore diameter: 19mm (for customer machining to parallel or taper as required.)
Solid Half Coupling Dimensions Diagram

R & D Marine Solid type shaft coupling number 202-027 Pilot Bored

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