As thekey equipment of modern steel production lines, the reliability of the bearing system of high-speed wire rod mills directly affects the operational efficiency of the entire production line. Scientific and standardized maintenance not only significantly extends the service life of bearings, but also effectively prevents unplanned downtime, creating considerable economic benefits for enterprises. This guide systematically outlines the key points of bearing lifecycle management, providing standardized operational references for equipment management personnel.

1、 Daily inspection and cleaning standards

Appearance inspection standard: Conduct weekly visual inspection of the bearing surface for mechanical damage such as cracks, peeling, indentation, etc., paying special attention to the integrity of the seals

Lubrication status monitoring: Regularly detect the viscosity, moisture content (recommended ≤ 0.03%), and particle contamination level (NAS grade ≤ 8) of lubricating oil using an oil analyzer

Cleaning process: Use non-woven fabric and specialized cleaning agent to clean the bearing seat. It is strictly prohibited to use compressed air to blow the inside of the bearing directly

2、 Refined management of lubrication system

Automatic lubrication system: It is recommended to configure an intelligent centralized lubrication device, set the oil injection cycle (usually 2-4 hours/time) and oil injection amount (0.5-1.5cc/point)

Oil replacement standard: When the acid value (KOH) is greater than 1.5mg/g or the change rate of kinematic viscosity is greater than 15%, the oil should be replaced immediately Pollution control measures: Install a 3 μ m precision filter on the fuel tank respirator and implement closed management on the oil storage tank

3、 Key points of mechanical adjustment technology

Axial clearance control: During hot operation, the clearance should be maintained within the range of 0.10-0.15mm Pre tightening force adjustment: Use a torque wrench to tighten in three incremental steps, and refer to the equipment manufacturer's technical manual for the final torque value

Accuracy requirements for alignment: The laser alignment instrument detects a radial deviation of ≤ 0.05mm/m and an angular deviation of ≤ 0.1mm/m

4、 Replace the maintenance decision tree

Replacement threshold determination: Start the replacement procedure when the vibration value exceeds the limit of ISO10816-3 standard or irreversible damage occurs Spare parts management principle: Establish a spare parts database containing original factory codes and implement first in, first out management

Maintenance quality verification: After maintenance, a 72 hour trial operation monitoring is required, and vibration, temperature rise and other parameters must meet the standards before acceptance can be carried out

5、 Digital operation and maintenance system

Electronic file system: using CMMS system to record full data such as bearing operating parameters, fault codes, maintenance work orders, etc

Predictive Maintenance: Establishing a Bearing Remaining Life Model Based on Vibration Spectrum Analysis and Temperature Trend Prediction

Knowledge Base Construction: Transforming Typical Fault Cases into Standard Operating Procedures (SOPs)

6、 Personnel Capability Matrix

Certification training system: Operators must pass the TIMKEN Bearing Academy Level 3 certification

Emergency drill: Conduct quarterly drills to deal with sudden failures such as bearing burnout Continuous improvement: Establish a QC team to regularly analyze and maintain data, optimize work standards

By implementing standardized management in this guideline, the average service life of bearings can be extended by more than 30%, and the overall equipment efficiency (OEE) can be improved by 15 percentage points. It is recommended that companies develop implementation guidelines based on their own working conditions and continuously track the effectiveness of improvements.