The Blok-Nub® friction sheave is a low-friction, sheave-less sheave with cover that withstands very high loads.
Intrinsically lubricated, it can be used in a wide range of applications and on all types of non-aggressive ropes.
Block-Nub offers a unique combination of advantages in terms of performance, durability and ease of use. It's an excellent choice for applications where friction must be minimized and strength maximized.