Manganese domed nuts keep material flowing efficiently through your cone crusher.
Columbia Steel’s manganese domed nut is a hemi-shaped main shaft nut which directs slabby material through the crusher, preventing blinding of the feed opening.
Dead bed domed nuts for Symons® standard cone crushers
Columbia Steel’s manganese Dead Bed Domed Nut has a raised rim and deep pocket. This design entraps feed material on top, creating “rock on rock” protection for the nut.
Dead bed style manganese nuts are available for 5 1/2′ and 7′ standard Symons® cone crushers.
Domed nut integrally cast insert is made to last longer
Our domed nuts are made of long wearing manganese steel, instead of plain carbon steel.
Easy to install and remove
Columbia’s manganese domed nut is available for 4 1/4, 5 1/2 and 7 foot standard Symons® cone crushers.
The machine threaded carbon steel insert is integrally cast in place so that it cannot spin or pull out.