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Split Clamp On Prop Shaft Coupling 202-171K
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R&D Marine 5" Split Clamp On Coupling for 50mm Shaft

Part No. 808527

€133.32 You pay €133.32 Incl VAT You pay €111.10 Excl VAT

RRP €144.13 €120.10

Save €10.81 (7.5%) Save €9.00 (7.5%)


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Brand R&D Marine
Country of Origin United Kingdom
Model 202-171K
Applications PRM, Borgwarner Velvet Drive, Hurth, Volvo Penta and Technodrive 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 50mm

This clamp on split half coupling is machined from solid steel and mates with the gearbox output coupling to connect a 50mm diameter metric boat propeller shaft to the gearbox, usually via a flexible coupling.

The clamp on split type propeller shaft coupling is machined to suit the boat propeller shaft diameter but can accommodate the variations that can occur with normal boat propeller shaft tolerances. It is simple to install and can be adjusted to the required position on the shaft. This clamp on shaft coupling is bored with a keyway and is secured to the boat propeller shaft with the clamp bolts supplied.

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

Recommended torque for the clamp bolts: 81Nm (60 lbsft)

Coupling dimensions:
For propeller shaft diameter 50mm
Keyway to BS4235: Part 1 Rectangular
a - Flange outside diameter = 5.00"
b - Hole pitch circle = 4.25"
c - Number of holes = 4
d - Hole size = 0.44" (7/16")
e - Register diameter = 2.50" male
f - Coupling length = 3.75"
g - Coupling clamp boss diameter = 4.06"

Split Half Solid Shaft Coupling Dimensions Diagram

R & D Marine Clamp on shaft coupling number 202-171K

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