The good quality roller ,suit the conveyor which is long ,big capacity ,high speed,work in harsh environments.Broad scope of application.The working life is more than 30000 hours.The warranty period is one year.If there is one bad in the warranty period for the quality problem, we will pay for three new for you
　　(1)Shaft,the roughness is 0.8 microns,the diameter is bigger 0.01mm than bearing inner diameter,Ensure the axial displacement and axial load.
　　(2)Tube is roller specialized seamless roller pipe,the thickness from 3.25mm to 5mm,ovality between 0.25 mm to 0.4 mm ,produced roller runout blow 0.5mm.
　　(3)The bearing is SRB bearing import from Sweden,is roller special double seal,the bearing inner race have V-groove,grease is Imports grease, temperature range of minus 40 degrees to 180 degrees above zero, bearing dustproof and waterproof , gap is C3, the noise of 33-38 db.
　　(4)The seal is DT II standard 7 items,including 4 pieces POM and 3 pieces steel seal,note 2/3 of the Great Wall lithium grease,could dustproof and waterproof.
　　(5)The snap is 2mm thickness,and 65M spring steel material.
　　(6)We use machine to polish to make sure the surface smoothly,make sure good painting.We have common paint and baking paint ,the baking paint film hard,greaseproof acid proof ,strongly adhesive and elegant ,have different colors.
　　(7)Packing :roller in bagging and then packed in cartons.