In the daily production of BEIREN series presses, the main motor drive is one of the most common issues encountered by press operators and maintenance personnel. As a representative of domestic offset presses, this model features strong parts interchangeability and low maintenance costs, with electrical systems mostly controlled by domestic PLCs. If not addressed promptly, it can affect registration accuracy and print quality in minor cases, or cause extended downtime in severe cases.
I. Fault Symptoms
Difficulty starting the main motor, unstable speed, abnormal noise, clutch or brake slippage, and abnormal energy consumption.
II. Cause Analysis
Worn carbon brushes on the main motor, damaged bearings, worn clutch/brake plates, damaged reducer gears, and loose drive belts. Given that the BEIREN is a representative domestic offset press with strong parts interchangeability, low maintenance costs, and domestic PLC-controlled electrical systems, priority should be given to checking key components and standard parameters during troubleshooting.
III. Troubleshooting Steps
1. Measure motor current and vibration; replace carbon brushes and bearings.
2. Adjust or replace clutch and brake plates.
3. Open the gearbox for inspection and change the oil.
4. Tension or replace the drive belts.
IV. Preventive Measures
1. Monitor motor temperature rise.
2. Regularly change the reducer oil.
3. Check brake clearance.
The above methods also apply to models such as BEIREN 300, BEIREN 400, PZ4880, and N300. For practical operations, refer to the domestic CNC system / centralized lubrication control and on-site working conditions. In complex situations, it is recommended to contact professional maintenance support through the printm.cn platform.
