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.
- Dependable -- The machine threaded carbon steel insert is integrally cast in place so that it cannot spin or pull out.
Manganese domed nuts for Symons® standard cone crushers
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.
Symons® is a registered trademark of Metso Minerals®. All manufacturer names, numbers, symbols and descriptions are used for reference purposes only. Columbia Steel Casting Co., Inc. is not affiliated nor an agent for Symons® or Metso Minerals®. All parts manufactured by, for and warranted by Columbia Steel Casting Co., Inc. and are not manufactured by, purchased from or warranted by the original equipment manufacturer.
