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Ronstan Series 55 BB Single Orbit Block Link Head

Ronstan Series 55 BB Single Orbit Block Link Head

Availability: In stock

HRF55101

Ronstan Series 55 BB Single Orbit Block Link Head

PRICE 

$37.36
Kilogram for kilogram of working load, BB and RT Orbit Blocks are the World's lightest. To gain peak performance, Ronstan engineered out the heavy steel load straps, head post, shackle, full-length fasteners, and cleating accessories.
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Description

RF55101
Kilogram for kilogram of working load, BB and RT Orbit Blocks are the World's lightest. To gain peak performance, Ronstan engineered out the heavy steel load straps, head post, shackle, full-length fasteners, and cleating accessories. Through extensive research and development, we replaced virtually all metal components with high-tech polymers and fiber equivalents. The unique orbital design allows the bearing to only be in the active areas of the floating sheave. This minimizes the mass of the inactive return race and hub. Weight and bulk are further reduced in the different block configurations. The ball bearing single and becket block has a through-sheave becket arrangement. The result? The lowest weight possible. Multi-sheave blocks have only single intermediate cheeks and an ultra-light and efficient head arrangement. This gives, 30% weight saving advantage over the nearest competitor. Other brands just link together their single blocks. This results in unnecessary double cheeks between each sheave, held togetherby a heavy steel channel ACR's the top of the block. Highest working load in its class The orbital ball-bearing arrangement gives the largest possible bearing race diameter. This maximizes load performance. The proven Ronstan 2-stage bearing system features high compression grade acetal ball bearings and a secondary full-contact bearing. This gives minimum friction ACR's the full working load range. The floating sheave and bearing system is supportedby a fiber-reinforced load frame. The design was computer modelled to be stress optimized. The Dyneema Link is produced from FSE Robline SK75 fiber, which is 10 times stronger and lighter than steel, and provides the final connection from the block to the load point. Simple and secure attachment The Dyneema Link is easily fitted and is retained securelyby a moulded retainer clip. The flexible link can be left with one end attached to the block when fitting, no more lost shackle pins. The system is compatible with Dyneema/Spectra strops, webbing and carbon connection points, much more so than steel loop tops or shackles. Low profile and compact The flexible Dyneema Link provides controlled rotation and 0ç or 90ç orientation. It connects directly to the head of the block rather than to an intermediate head post. This reduces weight and gives the lowest possible profile while allowing full articulation. Beckets have been carefully designed to minimize height. Applications:
Mainsheet systems on dinghies, sportsboats and small keelboats to 9m (30ft)
Spinnaker sheets on dinghies, sportsboats and small keel boats to 9m (30ft)
Halyard, Vang and Backstay application on boats to 8m (26ft)
Control line applications on larger yachts Materials:
Ball bearings, High compression strength carbon black Acetal
Stage, bearing, Carbon fiber reinforced, PTFE impregnated Nylon
Frame/Cheeks, Toughened, glass fiber reinforced Nylon
Rope Link: UV stabilised, multi-strand impregmented SK75 Dyneema Details:
Ultra Lightweight
Low friction 2-stage Orbital ball bearing system
Highest working load in its class
Easily fitted and securely retained Dyneema Link head
Low profile and compact
High performance cleating
Easily fitted and securely retained Dyneema Link head. Techincal Details:
Sheave, 55 mm
Max. Rope, 10 mm
Max. Cable, - mm
Pin a - mm
M.W.L. 500 kg
B. L. 1000 kg
Weight 68,

Specifications

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