4B trailers are manufactured from high grade heat treated steel to a minimum hardness of 57 HRC. Each piece is machined to size with appropriate bore and keyway specific to each customer’s application. Most sizes are in stock and ready to ship from 4B’s extensive inventory.
Available as segmental star trailers or smooth trailers.

Parameter Name	Parameter Value
Teeth	straight-toothed
Other characteristics	hub for chains conveyor chain machined for conveyors steel forged chain for industrial applications
Diameter (mm)	204 - 638