One Literature Club Jaw Crusher Maintenance Tips

As the core equipment of coarse crushing, the maintenance level of jaw crusher directly affects the production capacity, energy consumption and equipment life. In this paper, we will systematically sort out the whole process of daily maintenance, cyclic overhaul and sudden failure treatment, which will help you extend the equipment life by more than 30%.

Jaw crusher maintenance：

1. Daily maintenance:

Monitoring of operating conditions: vibration analyzers can be used to measure the vibration value of the bearing seat and set the abnormal vibration warning threshold for vibration detection. Observe whether the bearing temperature ≤ 75 ℃ if the temperature is over temperature then immediately shut down to avoid wear and tear on the apparatus.

Lubrication system check: thrust plate support to check the integrity of the oil film every day, the main bearing can be supplemented with grease every 4 hours, adjusting device screw weekly grease to prevent rusting.

Fastener status confirmation: focus on checking the frame link bolts, jaw plate pressure block and other parts to ensure that the torque standard can be met.

2. Periodic maintenance:

Weekly inspection: the wear degree of the jaw plate, to synchronize the inspection of the upper and lower jaw plate, to avoid partial grinding resulting in uneven particle size. Weekly calibration of transmission parts: check the tension of V-belt and make sure the radial runout of flywheel does not exceed 0.2mm/m.

Monthly maintenance: adjust the bearing clearance, so that the axial clearance of tapered roller bearings: 0.3-0.5mm.

Annual repair: core components should be detected such as the moving jaw body, eccentric shaft for magnetic particle detection if the crack length is not greater than 5mm can be repaired in time. The welding of the frame will be tested, and the defect area less than 5% can be regarded as qualified. Upgrade the automatic lubrication device for the old equipment to reduce the error of grease filling quantity, and at the same time, install the online monitoring system to find out the possible hidden danger of the equipment in time.

3. Emergency treatment of typical faults:

Bearing overheating: first check whether the grease is deteriorating, then measure the bearing clearance, and finally calibrate the pulley coaxiality.

Rattling: diagnose the location of the rattling by first stopping the machine and then manually coiling it. Check if the jaw plate is loose or the thrust plate is broken.

Reduced output: optimization method: adjust the parameters of tooth shape and control the feed size.

4. Maintain the safety red line:

Energy isolation: perform locking procedures before maintenance to avoid accidents. Jaw cavity cleaning: use long arm clamping tools, strictly prohibit reaching into the crushing cavity. High temperature protection: wait for natural cooling to below 50℃ before starting when replacing bearings

Scientific jawbreaker maintenance requires the establishment of a closed-loop system of “monitoring-analysis-intervention”. It is recommended to adopt the PDCA cycle to optimize the maintenance strategy: daily inspection data is entered into the CMMS system, monthly trend analysis report is generated, and the annual OEE benchmark is set against the industry OEE value (excellent level ≥ 85%). Through refined maintenance, the breakdown and downtime rate can be reduced from 8% to less than 2%, truly realizing cost reduction and efficiency!