Reduce weight and bulk with Ronstan's Series 40 Ball Bearing Orbit Blocks.
Ronstan's two-stage bearing system features high-compression grade Acetal ball bearings and a secondary full-contact Nylatron sheave and full contact bearing for dynamic loads, which results in minimum friction.
Use these blocks in mainsheet systems on dinghies; mainsheet fine tune systems on sportsboats and small keel boats; spinnaker and jib sheets on dinghies; and control line applications on larger yachts.
This cheek block features a fully automatic, load-sensing ratchet engagement that rotates clockwise. It has a recessed underside to suit curved mounting surfaces and low mounting points for maximum strength.
|Breaking Load (lbs)||1100|
|Breaking Load (kg)||500|
|Max Line Size (in)||5/16|
|Max Line Size (mm)||9|
|Max Working Load (lb)||385|
|Max Working Load (kg)||175|
|Sheave Diameter (in)||1 9/16|
|Sheave Diameter (mm)||40|