... 2.Load capacity: 200kg--320kg per caster 3.Caster material: Phenolic wheel with Steel roller bearing.Solid steel ... resistance. Now it already has become a professional caster company which integrates design, manufacture, assemble, inspection ... USD27,000,000. Our wheel diameter is from 15mm to 300mm, materials include rubber, TPR, PU, plastic, ... Product:4.Factory: 30 Phenolic caster wheel heavy duty