Ronstan Core Block, Series 100 – Single, Universal Head

A balanced design approach incorporating functionality, performance and style makes the Series 100 Core Blocks the right choice for performance cruising or racing applications. A full contact bearing 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. Glass Fibre reinforced nylon sheave, alloy cheeks and stainless fixings complete the durable package.Dynamic and high static load performanceCore Blocks incorporate a full contact acetal bearing on a polished stainless steel race to maintain low friction performance under heavy loads. Ball bearings are configured to act as a thrust bearing between the sheave and checks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isnt perfect; particularly important for foot blocks.Universal headThe head assembly incorporates a brass bearing washer to provide smooth 360 rotation of the post and shackle. A set screw arrangement allows the head to be locked at 0 or 90. Shackles are high quality forged grade 17-4PH stainless steel.Aluminium alloy cheek platesBlock cheeks are manufactured from the highest quality aluminium alloy for maximum strength and hard anodised for durability and corrosion resistance. Material optimisation and the cut-away design minimises weight and allows easy fresh water rinsing of salt and debris from the bearings. The hollow hub can be used as a becket take-off or tie-up point.Universal headThe head assembly incorporates a brass bearing washer to provide smooth 360 rotation of the post and shackle. A set screw arrangement allows the head to be locked at 0 or 90. Shackles are high quality forged grade 316 stainless steel.Features:High dynamic and static load capacityHigh load bearing systemBall bearings to counteract side thrust loadsClass leading performance and sleek, contemporary stylingDurable aluminium alloy cheek platesCentral hub hole can be used as a becket take-off or tie-up pointAlso available in Series 45, 60 & 75Universal head with full 3-axis articulationHead posts can be locked at 0 or 90 degrees, by using a 2.5mm Hex KeyApplications:Ideal for mainsheet, spinnaker sheet, vang, halyard and backstay applications on boats to 16m (53ft).General applications on larger yachtsMaterials:Bearings: High compression strength, self-lubricating acetalHead post: Grade 2205 stainless steelShackles: Grade 17-4PH stainless steelPadeye: Grade 15-5PH stainless steelOther fixtures: Grade 316 stainless steelShackle, post & hub: Grade 316 stainless steel.Part NumberSheave Max. Rope Max. Cable Pin M.W.L.B. L.WeightRON-RF104100100mm18mm-10mm3250kg7500kg900g