Hydraulic Cylinder Tube And Rod Straightness & Concentricity
Raw tube thickness is not uniform,the cold drawn process can only change ID/OD,but can not remove the tube wall thickness different.
The way to ensure 100% concentricity and straightness:
1）Use raw tube with 100% uniform thickness(it is not available at market,100%is not realatic)
2）Make the OD bigger than request and turning the OD to the required size,after this 100% straightness and concentricity honed tubes and hollow rods can be achieved.This is workable but cost is high
For example,customer need size ID120*OD140mm.First we need to prepare tube with OD143mm then turning it to 140mm
Normal cold drawn tube with ordinary straightness and concentricity
Advantage: most customer’s choice,low cost,producing time is fast stock available
Disadvantage: concentricityand straightness is not high
OD machined cold drawn tube with high precision straightness anf concentricity
Advantage: 100% concentricity and straightness
Disadvantage: need to customize,high cost,producing time is longer ,stock not available
Datong Hydraulic is a professional manufacturer of hydraulic cylinder with over 23 years experience in china , we have exporte to more than 60 countries in the world,honed tube ,hard chrome bar ,hollow chrome bar are hot selling products in our company ,any problems pls send us inquiry ,Wish Datong will be your next choice.