Select Page

Series 40 Orbit Double Block

$ 80.60 inc GST

Ronstan Series 40 Orbit Double Block -Dyneema Link head.

SKU: RF45201 Category:


Ronstan Series 40 Orbit Block -becket with Dyneema link head. 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. 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. 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 Robeline SK75 fibre, which is 10 times stronger and lighter than steel, and provides the final connection from the block to the load point. Ronstan has 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 fibre equivalents. The flexible Dyneema Link provides controlled rotation and 0? or 90? 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 minimise height. It is easily fitted and is retained securely by a moulded retainer clip. The flexible link can be left with one end attached to the block when fitting – no more lost shackle pins. APPLICATIONS: Mainsheet systems on spinnaker sheet on dinghies to 5m. Spinnaker sheets on dinghies, sports boats and small keel boats to 5m Halyard, vang and backstay applications on boats to 8m Control line applications on larger yachts. MATERIALS: Ball Bearings – High compression strength carbon black Acetal. Stage 2 Bearing – Glass fibre reinforced, MoS2 impregnated Nylon Frame/Cheeks – Toughened, glass fibre reinforced Nylon Sheave – Carbon fibre reinforced, PTFE impregnated Nylon Rope/Link – UV stabilised, multi-strand impregnated SK75 Dyneema?. Dimensions: Sheave ? 40 mm Max. Rope ? 9 mm M.W.L. 500 kg B. L. 1000 kg Weight 67 g