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Series 40 Orbit Block -swivel shackle head

$ 44.00 inc GST

Ronstan Series 40 Single Block -becket and swivel shackle head

SKU: RF45110 Category:

Description

Ronstan Series 40 Single Block. 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. 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. Use for: Mainsheet systems on spinnaker sheet on dinghies to 5m . Also on Spinnaker sheets on dinghies, sports boats and small keel boats to 5m. Perfect for Halyard, vang and backstay applications on boats to 8m and Control line applications on larger yachts. Ideal use for mainsheet systems and spinnaker sheets on dinghies, sports boats and small keel boats to 8m. Also great for halyard, vang and backstay applications on boats to 8m and control lines 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. Sheave: Carbon fibre reinforced, PTFE impregnated Nylon. Head fitting: Grade 316 stainless steel. Ball Bearings: High compression strength carbon black Acetal. Stage 2 Bearing: Glass fibre reinforced, MoS2 impregnated Nylon. Dimensions: Sheave ? 40 mm Max. Rope ? 9 mm Pin ? 4 mm M.W.L. 325* kg B. L. 650 kg Weight 44 g

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