This guide explains how to assess cylinder bearing wear before buying a used offset press. Typical warning signs include periodic ghosting, uneven pressure, abnormal bearing noise and local dot deformation. Use a dial indicator to check radial runout and axial movement, compare blanket and underpacking thickness with the machine standard, and inspect bearer clearance and gear contact. Review lubrication and maintenance records, then run the press at operating speed to confirm that noise and vibration remain stable. These checks support a practical purchase decision, but the final assessment should be made by a qualified technician using the exact machine manual and measured data.
Inspection checklist
- Measure radial runout and axial play with a calibrated dial indicator.
- Verify blanket and underpacking thickness across all cylinders.
- Check bearer clearance, gear contact marks and abnormal vibration.
- Record measurements, operating hours and service history before accepting the machine.
