Ronstan Marine Systems DivisionRonstan Marine Systems Division
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Ball Bearing

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Orbit Block

Orbit Block™ - Ball Bearing

Ball Bearing Orbit Blocks� boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and a Dyneema� rope link head. Their precision design allows the optimum number of ball bearings in loaded areas and eliminates them in inactive areas. Ineffective mass is reduced even further through fibre-reinforced composites in the block head, cleat arms and beckets.

Orbit Block™ - Ratchet

The world’s best ratchet block is now even better. It has all the holding power of its predecessor, but with superior rope wear performance. It’s lighter, and it’s the only ratchet block with both manual and full automatic modes. Control switches on both sides of the block remain accessible whether fitted on port or starboard side, and the NC-machined alloy sheave and simple mechanism ensuressuperb reliability and durability. It is essential equipment on racing dinghies and sports boats, and when you want the ultimate holding power.

We've been making custom lightweight blocks for years.
Now there's no need. These blocks are super light with great holding power.
We go with manual mode on the main and auto on the kite.

- Darren Bundock & Glenn Ashby - Olympic Tornado, F18 & A-Class World Champions

Orbit Block™ Product & Range info:

NEW! Swivel Shackle Orbit Blocks™

Orbit Block™ Demostration Video

News & reviews:

Practical Sailor's Ratchet Block Click-Off

"...the RF56101 is our Best Choice for grip among ratchet blocks in this size. Clearly a lot of thought has gone into the design and engineering of this block. It has great grip and is the most versatile of the group..."

Practical Sailor's Gear of the Year 2009

Featured in Practical Sailor's September 2009 'Gear of the Year', Ronstan Series 55 Orbit Ratchet Block has been selected as a 2009 Editor’s Choice product...


Series 40 Orbit Blocks™ chosen as Deck Equipment, Sails and Rigging category winner.


Practical Sailor's Editor's Choice

Series 55 RT Block
2009 Editors' Choice

Series 40 BB & RT
2008 Deck Equipment,
Sails & Rigging
category winner

Pittman Innovation Award 2008

Ronstan Orbit Block range
2008 Racing Gear
category winner

Endeavour Awards

Series 55 Orbit Block range
Best Consumer Product
category winner

PLUS : Australian International Design Awards - Series 55 BB & RT Sport & Leisure category winner

Big boat orbits:
Series 60

Series 75
Series 100
Series 125
Series 150
Series 180
Lashing Block