The brass anti-backlash nut and bearings within the 3018-PRO CNC Router X-Axis Gantry are wearable components and require periodic replacement. We suggest replacing both bearings (4) and anti-backlash nut periodically as part of the machines preventative maintenance schedule. Scheduled replacement will depend heavily on machine usage, materials processed and dust collection practices.
Product Notes: This product features the OEM 72mm X-Axis Rail Spacing for NCPRO Brand 1810-PRO and 3018-PRO CNC routers. If you are purchasing this for an off-brand clone router please verify that your X-Axis rail spacing is 72mm on center as some clone machines feature an incompatible 69mm X-Axis rail spacing.