Ronstan's award-winning Series 60mm Core Blocks have a tuned two-stage bearing system that provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle dynamic or static loads.
Under moderate loads, the Acetal ball bearings ensure minimum friction. Under heavy loads, stage two kicks in and the sliding Acetal bearing on a polished stainless steel race takes over to maintain low-friction performance.
The Series 60 Core Blocks are ideal for mainsheet, halyard, and spinnaker sheet applications on boats up to 40' (12m) and general applications on larger yachts.
The trunnion snap shackle, made of grade 15.5PH stainless steel, allows 360ﾰ rotation and side to side articulation. It is an ideal utility/emergency block or a quick-attaching 2:1 halyard block. It can be easily clipped onto a toe rail and the snap shackle has a ﾾ in (20mm) internal clearance.
|Breaking Load (lbs)||4410|
|Breaking Load (kg)||2000|
|Max Line Size (in)||1/2|
|Max Line Size (mm)||12|
|Safe Working Load (lbs)||2200|
|Safe Working Load (kg)||1000|
|Sheave Diameter (in)||2 3/8|
|Sheave Diameter (mm)||60|