Steel swivel forks with top plate. In the swivel head, there is a hardened and sealed double ball race with greased ball race channels and sealing as a protection against dust and dirt. The top plate with four bolt holes is directly bolted to the yoke and secured to ensure smooth movement with minimal tolerances in the swivel head. The wheels of the series KN are die casted wheels made of high quality Polyamide PA 6 in natural colour (white). The wheels are available with plain bearing, roller bearing or ball bearing. Polyamide 6 is suitable for applications for a temperature range of -40° up to +90°C.