Sep 24, 2025
I. Daily Maintenance Key Points
1. Lubrication Management
Use lithium-based grease (NLGI Grade 2) for the spindle bearings. Grease every 200 hours (approximately 1/3 to 1/2 of the bearing cavity).
Use ISO VG220 gear oil for the gearbox. Replace the oil after the first 300 hours and every 2000 hours thereafter. Replace and recycle the oil.
2. Cooling System Inspection
Confirm the cooling water flow rate (2-3 bar) before starting the machine. Do not shut off the cooling water completely. Clean dust from the heat sink monthly (thickness ≤ 1mm).
3. Roller Protection
Avoid running without material to prevent roller wear. Use stainless steel rollers when grinding corrosive materials.
II. Periodic Maintenance Schedule
1. Weekly Inspection
Clean the roller gap (air gun pressure 0.6-0.8 MPa).
Check for scraper wear (replace if the blade edge > 1mm).
2. Monthly Maintenance
Calibrate roller parallelism (error ≤ 0.02mm). Check the hydraulic system for cleanliness (NAS Level 8 Standard)
3. Annual Overhaul
Replace all seals (e.g., fluororubber seals)
Disassemble and inspect bearings and measure wear (allowable value ≤ 0.5mm)
3. Intelligent Monitoring Upgrade
Install a vibration sensor (alarm threshold 4.5mm/s)
Configure an oil particle counter (NAS Level 8)
4. Operating Specifications
Idle for 10 minutes before starting the machine to confirm there are no abnormal noises
Wear protective equipment such as goggles and gloves during operation
Perform the "idle run discharge" procedure before shutting down the machine
5. Typical Cases
Insufficient Lubrication: A paint factory failed to grease the bearings on time, causing them to heat up to over 60°C. Replacement restored the bearings to normal operating temperature.
Cooling Failure: Roller surface peeling due to cooling water shutoff increased repair costs by three times.
