Maintenance & Reliability 1 min read

Printing press support and maintenance: impact cylinders, ink and registration system

Technical analysis: PV-15/16-20RE01MC0-16

Підтримка та обслуговування друкарського пресу: імпактні циліндри, система фарби та реєстрації - UNITEC-D Industrial MRO
Друкарські преси вимагають регулярного обслуговування для забезпечення точності та якості. В цій статті наведено рекомендації щодо обслуговування, запчастин та аналізу витрат. Запчастини від UNITEC-D

Introduction: The Importance of Service in the Printing Industry

Printing presses are the main units in the process of production of printed products. Their efficiency, stability and durability directly affect product quality and production productivity. According to ISO 14001, equipment support and maintenance have a high priority to ensure environmental and economic efficiency.

System architecture: main subsystems of the printing press

A printing press consists of several key subsystems that interact to ensure accuracy and print quality:

  1. Impact cylinders: Perform the main function of printing by contacting the paper. They require regular processing and control.
  2. Paint System: Provides a constant supply of paint to the impact cylinders. The system includes pumps, pipelines, filters and control valves.
  3. Registration: Ensures accurate positioning of impact cylinders and paper sheet. A subsystem with hydraulic or electromechanical drives is used.

Critical components: table of main spare parts with technical characteristics

Name Number Technical parameters Certification Standards
Impact cylinder Rexroth PV-15/16-20RE01MC0-16 Diameter 15 mm, pressure 16 bar, operating temperature 50–70°C, MTBF 5000 h. CE, UkrSEPRO EN 12952, ISO 9001
Paint pump Atlas Copco 150-100-20 Output power 100 kW, consumption 150 l/min, MTBF 10,000 h. CE, UkrSEPRO EN 60534, ISO 10426
Hydraulic valve Hydac 6248-110 Maximum pressure 200 bar, power 15 kW, temperature 60°C, MTBF 8000 h. CE, UkrSEPRO EN 12952, ISO 9001
Registration reason Siemens 315-222-1CF11-0AA0 Maximum power 22 kW, frequency 50 Hz, MTBF 12,000 h. CE, UkrSEPRO EN 60534, ISO 10426

Maintenance schedule: preventive maintenance

Type of service Interval actions Duration
Danny Every working day Checking pressure, temperature, paint flow 15 min
Weekly Every Monday Cleaning of cylinders, checking of filters, diagnostics of hydraulics 1 hour
Monthly Every first Monday Maintenance, filter replacement, wear assessment 2 hours
annual Every January 1 Full inspection, oil change, restoration cost estimate 8 hours

Popular methods of leaving work: the top 5 most frequent refusals

  1. Wearing of impact cylinders: Occurs due to high pressure and temperature. Restoration requires 8–10 hours and costs UAH 1,200–1,500.
  2. Clog in ink system: Reported with reduced ink flow. Restoration requires 5–7 hours and costs UAH 800–1,000.
  3. Insufficient pressure in the hydraulic system: Reduced performance. Restoration requires 6–8 hours and costs 1,000–1,200 hryvnias.
  4. Error in registration drive: Detected by print reset. Restoration requires 7–9 hours and costs UAH 1,300–1,600.
  5. Filter contamination: Reduction of system efficiency. Restoration requires 4–6 hours and costs UAH 600–800.

Diagnostics Guide: A decision tree to identify problems

  1. Check the system pressure.
  2. If the pressure is low, check the hydraulic valves.
  3. If the valves are normal, check the pump.
  4. Check the temperature of the impact cylinders.
  5. If the temperature is above 70°C, check the cooling.
  6. Check the ink flow.
  7. If the flow is low, check the filters.
  8. Check the registration drive.
  9. If the drive does not work, check the electronics.

Spare parts strategy: recommendations for inventory, lead times and criticality

To ensure smooth operation of the press, it is recommended to keep the following spare parts in stock:

  • Critical: impact cylinders, hydraulic valves, registration drives. Delivery time is 3-5 days. The recommended amount is 2-3 units.
  • General: filters, pumps, electronics. Delivery time is 5-7 days. The recommended amount is 1–2 units.

Integrating Condition Monitoring: Sensors and Methods for Predictive Maintenance

The following methods can be used for effective predictive maintenance:

  • Temperature sensors: installed on impact cylinders and pumps. Overheating is detected.
  • Pressure sensors: monitor the hydraulic system. Low pressure is detected.
  • Flow sensors: measure paint flow. Traffic jams are detected.
  • Status controllers: installed on registration drives. Electronic rejections are detected.

Downtime cost analysis: real numbers for decision making

The cost of printing press downtime can be from UAH 1,500 to UAH 3,000 per hour. On average, downtime for 10 hours causes expenses in the amount of UAH 15,000–30,000. To avoid such costs, it is recommended to provide spare parts and regular maintenance.

Conclusion: Specialized support via UNITEC-D E-Catalog

Ensuring the effective operation of the printing press requires high-quality spare parts, proper organization of maintenance and the use of modern monitoring methods. All parts used in this article are available in the UNITEC-D E-Catalog. For detailed information on spare parts and specifications, visit the UNITEC-D E-Catalog.

List of references

  1. ISO 14001:2015 - Environmental management systems
  2. EN 12952:2010 – Hydraulic systems for industrial use
  3. ISO 9001:2015 – Quality management systems
  4. EN 60534:1998 – Electrotechnical devices for industrial use
  5. ISO 10426:2001 – Hydraulic valves

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