This is a ball screw and ball nut just shy of 1 inch major diameter (24.86mm). The lead is 5 turns per inch approximately (24.91mm after 5 turns.). This ball screw will provide for a smooth, easy and precise movement to CNC routers and machines. The length of threaded length is 1900mm. Ball screws are a type of screw that has a specific thread profile which will allow for a set of balls in a ball nut to smoothly circulate. This makes for an extremely smooth, low friction movement. This ball screw has machined ends and includes two bearing blocks for each end. Additionally, the machined end has a standard thread to lock provide axial movement limit. The nut is included. This end is turned down to 17mm, so you will need a 17mm coupling for this end. The other end has a groove for a circlip (also known as a C-clip, or retaining ring) and the circlip is also included). This end is turned down to 20mm. Make sure to have a coupling that has a bore of 17mm on one end and the motor shaft diameter bore on the other end. This coupling is not included with this product since there are many shaft diameters for motors.
