In the field of mining crushing, the quality of jaw crusher directly affects production efficiency and operating costs. This article systematically explains the key points of quality identification from five dimensions:
1. Material of core components
Frame structure: High-quality equipment uses integral cast steel or welded frames, and it is necessary to check whether the welds are flat and crack-free
Jaw plate material: Jaw plates made of high manganese steel or alloy steel have a longer life, and the tooth shape design should ensure the bite relationship between the tooth top and the tooth root
Bearing configuration: Double-row tapered roller bearings have a bearing capacity that is more than 30% higher than ordinary bearings
2. Differences in process design
Traditional PE models use a 21°-24° meshing angle, and the European version is optimized to 18°-21° to increase crushing force
The deep V-shaped crushing chamber is 5% larger than the traditional design feed size, and the symmetrical structure reduces the risk of blockage
3. Key performance verification
Power system: The motor power needs to match the production capacity requirements, and star-delta starting is more protective than direct starting
Adjustment mechanism: The hydraulic discharge port adjustment is 50% more accurate than the gasket type, and the maintenance efficiency is significantly improved
Vibration monitoring: The vibration value of the bearing seat should be ≤4mm/s² when running without load, and abnormal spectrum indicates assembly defects
4. Manufacturer service guarantee
Regular manufacturers provide more than 1 year warranty and are equipped with a stock of wearing parts (such as elbow plates, tie rod springs)
A third-party inspection report is required, with a focus on checking the compliance with the GB/T10379-2015 standard
5. Field test suggestions
No-load test machine to check abnormal noise and temperature rise (bearing temperature ≤ 60℃)
The capacity deviation during load testing should be <10% of the factory nominal value
Observe whether the lubrication system has an automatic alarm function
By comprehensively evaluating the three major systems of material, design, and service, 90% of equipment purchase risks can be effectively avoided.
