Technical Requirements For Precision Shafts

‌Dimensional accuracy‌: The dimensional accuracy requirements for the journals that support the shaft are relatively high (IT5~IT7), while the dimensional accuracy requirements for the journals of the assembled transmission parts are relatively low (IT6~IT9).
‌Geometric shape accuracy‌: Including the roundness and cylindricity of the journals, external cones, Morse taper holes, etc., the tolerances should generally be limited within the dimensional tolerance range.
‌Mutual position accuracy‌: Ensure the coaxiality requirements of the journals of the assembled transmission parts to the supporting journals to ensure the accuracy of the transmission and reduce noise.
‌Surface roughness‌: The surface roughness of the shaft diameter that matches the transmission parts is Ra2.5~0.63μm, and the surface roughness of the supporting shaft diameter that matches the bearing is Ra0.63~0.16μm.