Beta Marine Beta 10 Operator's Maintenance Manual page 12

FLEXIBLE OUTPUT COUPLINGS
A flexible coupling is mounted on the gearbox output flange and is strongly recommended in almost every case. Flexible
couplings do not resolve bad alignment, they are designed to absorb torsional vibrations from the propeller (transmitted
along the propeller shaft).
We normally offer two types:
R&D with a flexible nylon disc and optional Clamp Coupling – a very good economical solution.
8 R&D Flexible Couplings
The excellent 'CentaFlex' coupling design includes lots of rubber to absorb torsional shocks and loads. The
'CentaFlex' coupling is complete, replacing both the R&D flexible and the R&D clamp couplings above.
10 CentaFlex Type 12 & 16 Couplings
9 R&D Clamp Couplings - Optional
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