We use cookies - Find out more
Telephone: +44 (0)1502 716993
Part Identifier ?
Flexible Coupling for Boat Propeller Shaft 910-009
R&D Marine Logo

R&D Flexible Coupling 910-009 for 5" Couplings

Part No. 807109

$178.52 You pay $178.52 Incl Tax You pay $148.77 Excl Tax

RRP $193.00 $160.84

Save $14.48 (7.5%) Save $12.07 (7.5%)


Add to Wishlist
Brand R&D Marine
Country of Origin United Kingdom
Model 910-009
Gearbox Output Coupling Diameter 5.00" / 127mm
Coupling PCD 4.25" / 107.9mm
Number of Fixing Bolts 4
Coupling Register Diameter 2.50" / 63.5mm
Length 1.77" (45mm)
Capacity 13HP (9.69KW) Per 100 RPM
Notes Bonding Strip is part number 807739
Applications PRM Newage, Hurth, ZF, Yanmar and Borgwarner Gearboxes
Replaces PRM MT1104 Flexible Coupling
Certification / Approvals Approved by Lloyds register of shipping and Bureau VERITAS

Flexible couplings for boat propeller shafts.

Manufactured by R&D Marine, the flexible coupling fits between the boat propeller shaft coupling and the gearbox output coupling. This flexible coupling consists of a contoured flexible disc moulded in tough yet resilient new type Polyester Elastomer. The contoured coupling disc gives clearance for bolt heads, and allows the coupling to flex freely to take up any temporary misalignment of the engine and propeller shaft, due to flexing of the boat structure or the engine moving on its rubber engine mountings. Forward thrust is taken in compression on the coupling disc between the two shaft half couplings and reverse thrust is taken again in compression on the coupling disc between the two fail safe straps. A safety feature of the R&D 910 series flexible couplings is that in the unlikely event of a coupling disc failure, the steel straps make the coupling fail safe and ensure propeller shaft drive is maintained in both forward and reverse.

Gearbox Flange Dimensions

  • Diameter: 127mm (5.00")
  • Number of gearbox flange bolts: 4
  • Coupling bolt hole nominal diameter: 11.2mm (0.44")
  • Bolt PCD: 107.9mm (4.25")
  • Coupling register diameter: 63.5mm (2.5")

Flexible Coupling Details

  • Coupling maximum diameter: 143mm (5.63")
  • Length: 45mm (1.77")
  • Bolt diameter: 7/16" UNF
  • Capacity per 100 rpm: 9.69kW 13HP
  • Coupling approval: Lloyds Register of Shipping & Bureau Veritas
  • Typical applications: PRM Newage, Hurth, ZF, Borgwarner, Yanmar gearboxes
  • Electrical properties: Flexible couplings are as standard non-conducting
  • Earth bonding strip: 807739
  • Will replace PRM flexible coupling MT1104

You may also need

This product has been added to your basket.