Roller bearing block B400848
singlebase platefor sailboats

roller bearing block
roller bearing block
roller bearing block
roller bearing block
roller bearing block
roller bearing block
roller bearing block
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roller bearing
Number of sheaves
base plate
Application domain
for sailboats
Working load

2,500 kg, 3,500 kg (5,511.6 lb)

Breaking load

1,100 kg, 1,300 kg (2,425.1 lb)


This ROC Block Stand-up solution is completely unique on the market. It has a ball joint which under load adjusts itself to the right angle and stays there. It is equally strong in all directions, and allows a leaning angle down to 50 degrees. It also has the lowest height of all stand-up solutions, which helps to prevent winch overrun. The ball joint stand-up comes in a kit with a ROC block, which is available in two sizes. There are also two different versions to choose from, one standard which is bolted on deck and one through-deck. Depending on diameter and angle the rope exits as low as 42 mm above deck on the standard one, and down to 22 mm on the through-deck version. Like all our other products this ROC Block stand-up solution is designed and produced in our factory in Marstrand, Sweden. The ROC block is made of high quality aluminum, and comes with a ball joint stand-up in mirror polished stainless steel 316 and high strength composite. The stand-up should be fitted with four M8 bolts with countersunk head. For full strength, use A4-80 quality or higher.


*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.