RETROFITTED HOBBING MACHINES Our Retrofitted Hobbing Machines with Sinumerik CNC come with the following features EGB (Electronic Gear Box) Synchronization of Hob Spindle and Table Axis (C) Emergency retraction of Radial Slide (X Axis) UPS and battery for temporary back-up Absolute ENCODER for Table and Hob Scales for X, Y, Z, Axis User Screens with Dialog Programming