MaterialBrass, Tin Bronze, Lead Bronze, Aluminum Bronze, ect Feature1. High load capacity Cood anti-wearing 2. Low coefficients of friction 3.Good heat conductivity 4. High corrosion resistance 5.Long life and maintenance-free 6.No contaminant by oil or grease ProcessCentrifugal Casting, Sand Casting, Machining, Injection Quality assurance2D Projector, Height Gague, Micrometer, Roughness Tester, CCD Automatic Testing Machine CCD, Callipers ToleranceRoundness::+/- 0.01mm. Flatness:+/- 0.005mm. Height and length:+/- 0.01mm. Lead timeAccording to required time MOQ50KGCustomized Symons Gyratory Crusher Spares website:http://www.njgloria.com/gyratory-crusher-spares/symons-gyratory-crusher-spares/