The number of axis represents number of servo motors of the cnc tube and pipe bender. Generally speaking, a two axis cnc tube bender is a cnc hydraulic tube bender. The feeding and rotation is respectively driven by servo motors. A 3 axis cnc tube bender has its feeding, rotation and bending driven by servo motors. 1.The cnc tubing bender 38CNC-2B is a cnc hydraulic tube bender and the bending system is driven by hydraulic system while the cnc tubing bender 38CNC-3A is a all servo motors driven 3 axis cnc tubing bender. 2.Obviously, the bending accuracy of the cnc tubing bender 38CNC-3A is higher. After working for a period of time, the temperature of the hydraulic oil in the hydraulic system will change, which will affect the bending accuracy. However, the servo bend can maintain a high level of accuracy from beginning to end. Therefore, it is recommended to use cnc tubing bender 38CNC-3A if you have high requirements for bending accuracy. 3.The cnc tube bender price is different. The 38CNC-3A cnc tube bender cost is higher than the 38CNC-2B cnc tube bender cost. The cnc tube and pipe bender 38CNC-3A can always maintain the same high precision and can be used for the production of more products.