Ronstan Series 40 Ball Bearing Orbit Block(TM) - Single - Becket - Swivel Head
Ronstan Series 40 Ball Bearing Orbit Block(TM) - Single - Becket - Swivel Head, B Series 40 Ball Bearing Orbit Block 153 - Single - Becket - Swivel Head B br br Core Blocks 153 are a true all round solution A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads Acetal sheave alloy cheeks and stainless fixings complete the durable package For reliability and a long service life these blocks are the right choice for sheets halyards and control line applications for cruising and racing br br B Lightweight B br Kilogram for kilogram of working load BB Orbit Blocks 153 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 br br 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 br br 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 br br B Highest Working Load In Its Class B br 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 br br The floating sheave and bearing system is supported by a fiber-reinforced load frame The design was computer modelled to be stress optimised br br B Features B br UL LI Ultra Lightweight br LI Low friction 2-stage Orbital ball bearing system br LI Highest working load in its class br LI Low profile and compact br LI High performance cleating br LI Swivel shackle head for unlimited block rotation br LI Stainless steel shackle head for ultimate durability and compatibility with harsh fixing points br LI Ultra low profile integrated becket LI UL br br B Applications B br UL LI Spinnaker sheets on dinghies sportsboats and small keel boats to 5M 16 br LI Halyard vang and backstay applications on boats to 8M 26 br LI Control line applications on larger yachts LI UL br br B Materials B br UL LI Ball Bearings - High compression stregnth carbon black Acetal br LI Stage 2 Bearing - Glass fiber reinforced MoS2 impregnated Nylon br LI Frame Cheeks - Toughened glass fiber reinforced Nylon br LI Sheave - Carbon fiber reinforced PTFE impreganated Nylon br LI Head fitting Grade 316 stainless steel LI UL br br B Specifications B br B Sheave 216 B 40mm 1-9 16 br B M W L B 325kg 715lbs br B B L B 650kg 1 430lbs br B Weight B 44g 1 6oz --- cis2 m2hrm5Rq ---