Stainless Steel Swivel Castors with top plate in material quality 1.4301. Swivel head with double ball race which is sealed to protect against dust and dirt. The top plate with four bolt holes is directly riveted to the fork to ensure smooth movement with minimal tolerances in the swivel head. The series LI is suitable for manually moved loads up to 300 kg. KN series wheels are die casted one piece wheels made of high quality Polyamide PA 6 in natural color (white). The wheels are available with plain bearing. Polyamide 6 is suitable for applications for a temperature range of -40° up to +90°C.