Trundle needle,Trundleing the post thrust bearing trundles the needle through the roll part of the body,Cylinder roller and thrust maintain shelf and the thrust bed down the livestock to make up,Trundleing needle and the cylinder roller is subjected to the shelf maintaining that the thrust maintains and guides.Moreover thrust bed down the livestock against the difference,Shaft ,The pedestal encircles and employs in company,Fix module shaft shoulder end face and the shell opening back plane dimensional tolerance,Geometry accuracy,Rigidity,Axial is moved up and down,Coarse degree ought to accord with the internation ,National standard stipulation demand.
When not emploing the thrust bed down the livestock,Trundle the face that the needle the contact hardness HRC=58-64, hardening straturm = 0.6-1.0mm.