-40%
RF55110 Ronstan Series 55 Ball Bearing Orbit Block Single Becket Swivel
$ 25.43
- Description
- Size Guide
Description
RONSTAN SERIES 55BB ORBIT BLOCK SINGLE BECKET SWIVELManufacturer's Part Number: RF55110
Series 55 Ball Bearing Orbit Block - Single - Becket - Swivel Head
Lightweight
Kilogram for kilogram of working load, BB and RT Orbit Blocks are the world's lightest. The unique orbital design allows the bearing to only be in the active areas of the floating sheave. This minimises 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 a 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 together by a heavy steel channel across the top of the block.
Highest Working Load In Its Class
The orbital ball-bearing arrangement gives the largest possible bearing race diameter. This maximises 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 across the full working load range.
The floating sheave and bearing system is supported by a fiber-reinforced load frame. The design was computer modelled to be stress optimised. 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.
Features:
Ultra Lightweight
Low friction 2-stage Orbital ball bearing system
Highest working load in its class
Low profile and compact
High performance cleating
Swivel shackle head for unlimited block rotation
Stainless steel shackle head for ultimate durability and compatibility with harsh fixing points
Ultra low profile integrated becket
Applications:
Mainsheet systems on dinghies, sportsboats and small keelboats to 9M30'
Spinnaker sheets on dinghies, sportsboats and small keel boats to 9M30'
Halyard, Vang and Backstay application on boats to 8M26'
Control line applications on larger yachts
Ideal use for mainsheet systems and spinnaker sheets on dinghies, sportsboats and small keel boats to 9M30'
Also ideal with halyard, vang and backstay applications on boats to 8M26'
Spinnaker sheets on sportsboats and small keel boats lateral lead blocks
Control line applications on larger yachts
Materials:
Ball bearings - High compression strength carbon black Acetal
Stage 2 bearing - Carbon fiber reinforced, PTFE impregnated Nylon
Frame/Cheeks - Toughened, glass fiber reinforced Nylon
Rope Link: UV stabilized, multi-strand impregmented SK75 Dyneema
Sheave: Carbon fiber reinforced, PTFE impregnated Nylon
Head fitting: Grade 316 stainless steel.
Specifications:
Sheave Ø:
55mm2-5/32"
Max. Rope Ø:
10mm3/8"
M.W.L.:
500kg1,100lbs
B. L.:
1,000kg2,200lbs
Weight:
88g3.1oz
Disclaimer: Descriptions and pictures are provided by the manufacturer and may be used for multiple variations or parts.
Manatee Max ships from multiple locations across the United States.