R&D f/5" B/W Hurth and Volvo Flexible Shaft Coupling - 25HP/100RPM Capacity Marine Hardware

Flexible Shaft Coupling for 5" B/W, Hurth and Volvo - Capacity 25 HP/100 RPM

The R&D Marine Flexible Coupling consists of A flexible disc molded with a polyester elastomer The disc provides space for bolt heads and is able to flex freely to compensate for any temporary misalignment of the motor and shaft due to flexing of the boat structure or displacement. of the motor on its support. the disc between the two coupling halves, and the reverse thrust is taken up in compression on the disc between the two safety straps. In the unlikely event of a violent impact, the steel straps secure it. coupling and ensures drive retention in both forward and reverse.

Reduce engine noise and transmission vibration

Offset bolts allow the element to isolate vibrations and compensate for some misalignments.

Reduces costly transmission repairs

Absorbs shock loads from difficult gear changes.

Fits most major transmissions

For engines from 5 to 1,500 horsepower. It is suitable for brands such as Borg Warner, ZF-Hurth, Twin Disc, Volvo, Yanmar. , Technodrive, and more.

Under compression load in forward and reverse gear

The rear steel strap bolted to the transmission acts as a backing plate to prevent reverse thrust by separating the element.

Quick and easy installation

The R&D marine flexible coupling requires no machining and Comes with bolts to connect. between the two existing shaft flanges.

Extremely durable

Impervious to salt water, diesel and lubricating oils. Flexible fittings are made from a polye elastomerster unaffected by salt water, diesel or lubricating fluids.

Fail-safe design

A fail-safe design is incorporated into the R&D flexible shaft coupling which prevents the two couplings from separating in the event of an impact or failure of an element, while other couplings do not. This fail-safe design is accomplished using two steel straps and through-bolts penetrating both the shaft coupling and the transmission output flange. The rear steel strap is bolted to the transmission output flange and the front strap is bolted to the shaft coupling. In the event of an impact, the rear steel strap (bolted to the transmission) will catch the front steel strap (bolted to the shaft coupling) and prevent the transmission from separating.

The item R&D will absorb the shock load (reducing or eliminating damage to thetransmission) and will maintain contact between the two couplings. The steel straps also hold the R&D flexible coupling under compressive loading in forward and reverse (the rear strap bolted to the transmission acts as a backing plate).

Machine No cast

The Drivesaver is cast, while the R&D flexible shaft coupling is machined. Both models suggested that you first set your alignment by bringing the two couplings together, then adding the flex coupling. The machined part will have a MUCH tighter tolerance than a cast part.

Checking Alignment

R&D Flexible Shaft Coupling allows an inspection of the alignment after the element. is bolted in place. There is a machined and red painted bolt head. Once the R&D flexible shaft coupling is bolted in place, a feeler gauge can be slipped between the head of the red bolt et mating. This process is repeated with the same bolt four times at 90 degree intervals while rotating the shaft. If the deviation is less than 0.010" (0.25 mm), the motor is accurately aligned.

To calculate the required coupling horsepower:

Engine power x Reduction ratio x 100 = HP/100 rpm
Engine speed

Example:

Ford 150 HP @ 2500 RPM with Borg Warner Velvet Drive 72C 2:1 Reduction Ratio
EngiHorsepower is 150 HP, Maximum RPM is of 2500, reduction ratio is 2:1
150/2500 x 2 x 100 = 12 HP per 100 rpm
Required coupling is 910 -009

Specifications:

Manufacturer: B/W, Hurth, Volvo
Diameter ( inches/mm): 5 / 127
Number of bolts: 4
Hole diameter (inches/mm): 0.44 / 11.2
Bolt pitch circle (inchs/mm): 4.25 / 107.9
Register (inches/mm): 2.5 / 63.5
Diameter (inches/mm): 5.63 / 143
Length (inches/mm): 2.06 / 52.4
Bolt diameter: 7/16 UNF
HP per 100 rpm min (hp / kW): 25 / 18.64

PRODUCT ID: 99774
SKU: NVN-99774
CSKU: CWR-99774
REWRITE: 110885-r-d-flexible-tree-coupling-f-5
MPN: 910-057
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NAME: R&D FLEXIBLE COUPLING F/5" 5" B/W, Hurth and Volvo - Capacity 25HP/100RPM
TYPE: MarineHardware | Shaft Couplers
SELLER: R & D Marine
SPORTING GOODS> OUTDOOR LEISURE> BOATING AND WATER SPORTS

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R&D Flexible Shaft Coupling f/5" B/W, Hurth and Volvo - Capacity 25HP/100RPM Product Description

Flexible Shaft Coupling for 5" B/W, Hurth and Volvo - Capacity 25HP/100RPM 100RPM

The R&D marine flexible coupling consists of a flexible disc molded with a polyester elastomer. The disc provides clearance for the bolt heads and is capable of flexing freely to compensate for any temporary misalignment of the motor and shaft due to flexing of the boat structure or movement of the motor on its mount. The forward thrust is taken in compression on the disc between the two half-couplings, and the reverse thrust is taken in compression on the disc between the two safety straps. In the unlikely event of a serious impact, the steel straps keep the coupling secure and ensure the transmission stays in place in both forward and reverse directions.

Reduce noise of the engine and thetransmission vibration

Offset bolts allow the element to isolate vibration and compensate for some misalignment.

Reduces costly transmission repairs transmission

Absorbs shock loads from difficult gear changes.

Fits most major transmissions.

For engines from 5 to 1,500 horsepower. It is suitable for brands such as Borg Warner, ZF-Hurth, Twin Disc, Volvo, Yanmar, Technodrive, and more.

Under compression load in forward and reverse gear

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Rear steel strap bolted to the transmission acts as a backing plate to prevent reverse thrust from separating the element.

Quick and easy installation

The R&D marine flexible coupling requires no machining and is supplied with bolts to connect between the two existing shaft flanges.

Extremely durable

Impervious to salt water, diesel and lubricating oils. Flexible fittings are made from a polyester elastomer unaffected by salt water, diesel or lubricating fluids.

Fail-safe design

A built-in safety design is integrated into the R&D flexible shaft coupling which prevents the two couplings from separating in the event of an impact or element failure, unlike other couplings. This fail-safe design is accomplished using two steel straps and through-bolts penetrating both the shaft coupling and the transmission output flange. The rear steel strap is bolted to the transmission output flange and the front strap is bolted to the shaft coupling. In the event of an impact, the rear steel strap (bolted to the transmission) will catch the front steel strap (bolted to the transmission).the shaft coupling) and will prevent the transmission from separating.

The R&D element will absorb the shock load (reducing or eliminating damage to the transmission) and maintain contact between the two couplings. The steel straps also hold the R&D flexible coupling under compressive loading in forward and reverse (the rear strap bolted to the transmission acts as a backing plate).

Machined not cast

The Drivesaver is cast, while the R&D flexible shaft coupling is machined. Both designs suggest that you first set your alignment by bringing the two couplings together, then adding the flex coupling. The machined part will have a MUCH tighter tolerance than a cast part.

Checking Alignment

R&D Flexible Shaft Coupling allows an inspection of the alignment after the element. is bolted in place. There is a bullheadn machined and painted red. Once the R&D Flexible Shaft Coupling is bolted in place, a feeler gauge can be slipped between the head of the red bolt and the coupling. This process is repeated with the same bolt four times at 90 degree intervals while rotating the shaft. If the deviation is less than 0.010" (0.25 mm), the motor is accurately aligned.

To calculate the required coupling horsepower:

Engine power x Reduction ratio x 100 = HP/100RPM
Engine speed

Example:

Ford 150 HP @ 2500 RPM with Borg Warner Velvet Drive 72C 2:1 Reduction Ratio
Engine power is 150 hp, max rated rpm is 2500 , reduction ratio is 2:1
150/2500 x 2 x 100 = 12 hp per 100 rpm
Required coupling is 910-009

Specifications:

Manufacturer: B/W, Hurth, Volvo
Diameter (inches/mm): 5 / 127
Number of bolts: 4
Hole diameter (inches/mm): 0.44 / 11.2
Bolt pitch circle (inches/mm): 4.25 / 107.9
Register (inches/mm): 2.5 / 63.5
Diameter (inches/mm): 5.63 / 143
Length (inches/mm): 2.06 / 52.4
Bolt diameter: 7/16 UNF
HP per 100 rpm (hp / kW): 25 / 18.64

Save $222 when you purchase the R&D Flexible Shaft Coupling f/5" B/W, Hurth and Volvo - 25 HP/100 RPM Capacity for only $888 from NVN Marine! Free Same Day Delivery Before !3pm R&D Flexible Shaft Coupling f/5" B/W, Hurth and Volvo - 25HP/100RPM Capacity Technical Specifications

Type:	Marine Equipment \| Shaft couplers
Supplier:	Marine R&D
Weight:	5.0 lbs

R&D Accouplemflexible shaft coupling f/5" B/W, Hurth and Volvo - Capacity of 25 HP/100 rpm User reviewsR&D flexible shaft coupling f/5" B/W, Hurth and Volvo - Capacity of 25 HP/100 RPM Shipping & Returns

Shipping Weight:	5.0 lbs
Box sizes:	4.00 (h) x 6.00 (w) x 6.00 (w)
Cubic Feet:	144.0
Recordable:	Yes

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