| > Check Out <

HOME

Search for:

Dedicated Areas

Resources

Special Sections

Ronstan Series 55 BB Orbit Blocks

Ronstan Stand-up Base, S55 BB & RT Orbit Blocks Code: RONRF2455 Price: $9.31	Ronstan Retainer Clip, S55 BB&RT Orbit Singles Fiddles, 2-pack Code: RONRF50001 Price: $3.36	Ronstan Retainer Clip, S55 BB Orbit Doubles RT Triple, 2-pack Code: RONRF50002 Price: $3.78
Ronstan Retainer Clip, S55 BB Orbit Block Triples, 2-pack Code: RONRF50003 Price: $3.78	Ronstan Series 55 BB Orbit Block, Single, Link Head Code: RONRF55101 Price: $37.30	Ronstan Series 55 BB Orbit Block, Single Becket Swivel Code: RONRF55110 Price: $39.90
Ronstan Series 55 BB Orbit Block, Single, Becket, Link Head Code: RONRF55111 Price: $39.90	Ronstan Series 55 BB Orbit Block, Cheek Code: RONRF55151 Price: $33.90	Ronstan Series 55 BB Orbit Block, Upright Lead Code: RONRF55171 Price: $47.50
Ronstan Series 55 BB Orbit Block, Double, Link Head Code: RONRF55201 Price: $74.70	Ronstan Series 55 BB Orbit Block, Double Becket Swivel Code: RONRF55210 Price: $83.20	Ronstan Series 55 BB Orbit Block, Triple, Link Head Code: RONRF55301 Price: $103.60
Ronstan Series 55 BB Orbit Block, Triple Becket Swivel Code: RONRF55310 Price: $105.30	Ronstan Series 55 BB Orbit Block, Quad Becket Swivel Code: RONRF55410 Price: $169.90	Ronstan Series 55 BB Orbit Block, Fiddle, Link Head Code: RONRF55501 Price: $44.10
Ronstan Series 55 BB Orbit Block, Fiddle, Becket, Link Head Code: RONRF55511 Price: $50.90	Ronstan Series 55 BB Orbit Block, Fiddle, Cleat, Link Head Code: RONRF55521 Price: $99.40	Ronstan Series 55 BB Orbit Block, Fiddle Becket Cleat, Link Head Code: RONRF55531 Price: $108.70
Ronstan Dyneema Link, S40 Doubles & Triples, S55 Singles & Fiddles Code: RONRF900408 Price: $9.31	Ronstan Dyneema Link, S55 Doubles & Triples, S70 Singles Code: RONRF900510 Price: $9.31

RONSTAN Orbit Blocks - Ball Bearing Size 55 - Overview

Lightweight. Kilogram for kilogram of working load, Ronstan Series 55 Ball Bearing 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 fibre-reinforced load frame. The design was computer modelled to be stress optimised. The Dyneema® Link is produced from FSE Robline SK75 fibre, which is 10 times stronger and lighter than steel, and provides the final connection from the block to the load point.

Ronstan Series 55 BB Orbit Blocks

We at Mauri Pro Sailing are fully committed to be your Ronstan Series 55 BB Orbit Blocks specialist not only providing the sailing community with a comprehensive and easy to use web site but with all the appropriate technical information that you might need to select your sailboat hardware and equipment. If you need any assistance selecting the appropriate Ronstan Series 55 BB Orbit Blocks please contact us. Our crew is ready to help!

Pictures and text courtesy of the manufacturer.

Need Help?

Choose your Currency

International Shipping

Price Matching

Buy with confidence
Price Match Guarantee

We do our best every day to ensure that our prices are the best you can find. If within 30 days you find a better price, we’ll refund the difference as a store credit. Read more.

International Orders

Technical Assistance and Customer Support