In the daily production of BEIREN series printing presses, gripper bar maintenance is one of the most common issues encountered by press operators and maintenance personnel. As a representative domestic offset press, this model features strong parts interchangeability and low maintenance costs, with electrical systems mostly controlled by domestic PLCs. If not addressed promptly, it can range from affecting registration accuracy and print quality to causing extended downtime in severe cases.
I. Typical Fault Symptoms: Uneven gripper bite force leads to paper tail-end flapping and unstable registration; worn gripper pads leave marks on the paper.
II. Common Q&A:
Q1: What is the most common cause of gripper bar maintenance issues?
A: Mainly gripper spring fatigue and reduced bite force; worn gripper pads or ink contamination.
Q2: What precautions should be taken when working on BEIREN presses?
A: It is necessary to work in conjunction with the domestic CNC system / centralized lubrication control, following standard procedures.
Q3: How can recurring problems be avoided?
A: Regularly calibrate gripper bite force.
III. Treatment Steps:
Use a tension gauge to calibrate gripper bite force tooth by tooth for consistency; replace worn gripper pads and clean them; grind or replace the opening/closing cam; check the straightness of the gripper shaft.
The above methods also apply to models such as BEIREN 300, BEIREN 400, PZ4880, and N300. For practical operation, refer to the domestic CNC system / centralized lubrication control and on-site conditions. For complex situations, it is recommended to contact professional maintenance support through the printm.cn platform.
