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22
September

How We Test Every Crusher Before Shipment | AON Mining

Quick answer No crusher leaves our factory without running. Every machine completes a no-load run test, a hydraulic and lubrication check, a discharge setting (CSS) adjustment test, and — for complete lines where material is available — a loaded trial. The customer receives the test report, photos and video before the machine is packed. This page shows exactly what we check, and why each check matters to the person paying for the equipment. Why factory testing is not optional A crusher is not a shelf product. It is a heavy machine built to order, and it will spend the next decade in a quarry thousands of kilometres from the factory that made it. Any defect that survives into the container becomes a problem the buyer has to solve with local labour, local parts and a language barrier. Factory testing moves that risk back to where it belongs — the manufacturer’s floor. Every hour spent testing here saves days of downtime there. What we test, and why No-load run test The machine runs empty for a set period. We watch for abnormal vibration, noise, overheating of bearings and oil leaks. This catches assembly errors, misalignment and loose fasteners before they become...
18
September

Crusher Buying Guide: How to Choose the Right Machine

Quick answer Buying a crusher comes down to six decisions, and the order matters: know your material, fix your target capacity, define your finished product, match the flowsheet, budget the total cost of ownership, then vet the supplier. Get the first three right and the machine almost chooses itself. Get them wrong and no discount will rescue the project. This guide walks through all six, with the numbers you actually need to send to a manufacturer for an accurate quotation. Step 1: Know your material Everything starts here. Two machines with the same capacity can cost very different amounts to run, depending on what you feed them. Four properties decide the crusher type: Hardness (Mohs scale): how much force it takes to break the rock Abrasiveness: how fast it chews through wear parts Moisture content: whether it blinds screens and blocks chambers Maximum feed size: the largest lump your loader will dump in A simple rule of thumb by hardness: Mohs 1-3 (soft) — limestone, dolomite, gypsum. Primary: jaw crusher. Secondary: impact crusher or heavy hammer crusher. Mohs 3-5 (medium) — marble, sandstone, oil shale. Primary: jaw crusher. Secondary: cone or impact crusher. Mohs 6-7 (hard) — granite, basalt, river...
16
September

Jaw Crusher vs Cone Crusher: Which for Primary Crushing?

Quick answer For primary crushing, the jaw crusher is almost always the right choice. Its large feed opening and high reduction ratio let it accept run-of-mine rock up to 1,000 mm and reduce it to a size a cone crusher can handle. The cone crusher is a secondary and tertiary machine — it produces better particle shape and lower wear cost, but its feed opening is too small for blasted rock. In most aggregate plants the two work together: jaw crusher first, cone crusher second. One example is our 300 t/h basalt crushing plant in Indonesia, which runs the same jaw-plus-cone combination. What a jaw crusher does A jaw crusher breaks rock between a fixed jaw and a moving jaw. The moving jaw swings back and forth, compressing and splitting the material against the fixed one. Because the crushing action happens at the very top of the chamber, the machine can accept very large, irregular lumps — which is exactly what comes out of a blast. Typical specifications: Feed opening: 400 x 600 mm up to 1,200 x 1,500 mm Maximum feed size: 350 mm up to 1,000 mm Output size range: 40 mm up to 300 mm Capacity: 30...

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