Pay in installments of $52.50 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 24 - Aug 29
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
R&D 910-009VO Flexible Coupling 5" for Volvo Penta GearboxesFlexible 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
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: Volvo Penta gearboxes - Electrical properties: Flexible couplings are as standard non-conducting - Earth bonding strip: 807739Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 29 reviews
Sort
Product Reviews
★★★★★ 5
Great Resource
Format: Paperback
Great resource that adds to your learning. Give rationals
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 5, 2025
★★★★★ 1
DO NOT PURCHASE THIS BOOK.
Format: Paperback, Format: Paperback
If I could give zero stars, I would. Do not purchase if you intend to use the Access Code. I was very careful to scratch off the Access code, but you can see it was still unreadable. I went to the website and submitted a ticket. One option for a reason to submit a ticket is 'unreadable access code", so they know this is a problem. They ask for a photo of the code and a receipt of purchase. I sent both. Then they asked for proof that the book was purchased NEW. This was not noted on the Amazon invoice. I was instructed to reach out to the vendor for the additional info. Or I could spend more money on another access code. There are other study options available.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 20, 2026
★★★★★ 5
Great study book
Format: Paperback
Questions are very similar to my current program questions and have great rationales.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 18, 2025
★★★★★ 3
Some errors
Format: Paperback
Not too good as I think. Some error between hard copy and online q&a bank. Very careful if you want to study with this
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 21, 2025
★★★★★ 1
Poor quality, the book is already falling apart.
Format: Paperback
This is a review on quality of the book NOT the content.
I just got the book today and the binding on the cover came off immediately. It’s very poorly made!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026