In daily production on Komori series printing presses, main motor drive issues are among the most common problems encountered by press operators and maintenance personnel. These Japanese-made machines are known for their stability, with mature H-UV drying and automatic registration systems, and even ink distribution across the inking train. If not addressed promptly, the consequences can range from impaired registration accuracy and print quality to extended downtime in severe cases.
1. Fault Symptoms: Difficulty starting the main motor, unstable speed, abnormal noise, clutch or brake slippage, and abnormal energy consumption.
2. Cause Analysis: Carbon brush wear on the main motor, bearing damage, clutch/brake lining wear, gear damage in the reduction gearbox, and loose drive belts. Given that Komori Japanese machines are renowned for stability, with mature H-UV drying and automatic registration systems and even ink distribution, troubleshooting should prioritize checking key components and standard parameters.
3. Handling Steps: Measure motor current and vibration, replace carbon brushes and bearings, adjust or replace clutch/brake linings, open and inspect the reduction gearbox and change the oil, and tension or replace belts.
4. Preventive Measures: Monitor motor temperature rise, perform regular oil changes on the reduction gearbox, and check brake clearance. The above methods also apply to models such as the LS440, LS629, Lithrone, GL840, and G40. For practical operation, refer to the PQC Print Quality Control system / KMS console and on-site conditions. For complex situations, it is recommended to contact professional maintenance support through the printm.cn platform.
