For cone crusher operators in Indonesia and Brazil, “packing” – material buildup and compaction in the crushing chamber – is a common problem that reduces throughput, increases liner wear, and can damage the crusher. Understanding what causes cone crusher packing and how to fix helps you maintain consistent production and avoid costly shutdowns. Below we explain the main causes and practical solutions. OCP Mechanical Company supports hard rock quarries with reliable cone crushers and technical advice.
Common Causes of Cone Crusher Packing
When asking what causes cone crusher packing and how to fix, the most frequent reasons are:
Feed too wet or sticky – Moisture above 5‑6% causes fine particles to adhere to liners and each other, forming a solid mass. This is common in tropical regions like Indonesia and Brazil during rainy seasons.
Excessive fines in feed – If the feed contains more than 30% of material smaller than the closed side setting (CSS), it cannot pass through the chamber quickly, leading to packing.
Incorrect cavity selection – Using a short head cavity with a very tight CSS when feed contains coarse lumps can cause material to wedge in the upper chamber.
Low crusher speed or power draw – Operating below recommended speed reduces the ability to discharge material, causing buildup.
OCP’s Type C cone crusher is designed with a steep crushing chamber and hydraulic relief to minimize packing. Note: Product data are constantly updated; for the latest specifications of Type C, please contact our online customer service.
Many andesite quarries in Java and iron ore operations in Minas Gerais have experienced packing during wet seasons. Recognizing what causes cone crusher packing and how to fix allowed them to resume production quickly.
How to Fix Packing When It Happens
If packing occurs, follow these steps for what causes cone crusher packing and how to fix:
Stop feeding immediately – Do not attempt to clear while feeding.
Open the CSS fully – Use hydraulic adjustment to widen the setting, allowing material to fall through.
Run the crusher empty – Let the crusher run for 2‑3 minutes to discharge as much material as possible.
Use a pry bar or water jet – If material remains, carefully break the packed mass from the top. Never use explosives or heavy hammering.
Inspect for liner damage – Packing can cause uneven liner wear or cracks. Replace liners if damaged.
To prevent damage, OCP recommends installing a pressure relief system that automatically opens the CSS when hydraulic pressure spikes (indicating packing). Many operators in Brazil’s Carajás region have reduced packing‑related downtime by 70% after adding this feature.
Note: Actual recovery time varies with severity. Always follow lockout/tagout procedures before manual clearing.
Preventive Measures to Avoid Packing
The best answer to what causes cone crusher packing and how to fix is prevention. Implement these measures:
Pre‑screen fines – Install a vibrating screen before the cone crusher to remove material below CSS. This single step can eliminate 80% of packing risks.
Control feed moisture – If material is wet (>5% moisture), add dry material or use a dewatering screen before the cone crusher.
Match cavity to feed size – Use a standard cavity for feed with lumps >50 mm; use short head only for feed <40 mm.
Maintain proper speed – Run the cone crusher at recommended eccentric speed (typically 850‑950 rpm for hard rock). Lower speed increases packing risk.
OCP’s Type C cone crusher features a variable speed drive (optional) that allows adjusting speed to match feed conditions. Many Indonesian sand producers have reduced packing incidents by 60% after installing a pre‑screen and maintaining choke‑fed conditions.
As a direct‑selling manufacturer, OCP provides factory pricing on cone crushers, screens, and wear parts, with no middleman markup. We ship to Jakarta or Santos ports within 18‑22 days.
Why OCP Is Your Partner for Reliable Crushing
Understanding what causes cone crusher packing and how to fix helps you minimize downtime and protect your investment. OCP Mechanical Company has over 40 years of history in crushing equipment. We offer:
Free pre‑sale circuit review to identify packing risks based on your feed material and climate.
A customized solution including pre‑screens, moisture control, and hydraulic relief systems.
24/7 online technical support for troubleshooting and remote adjustment.
Our Type C cone crushers have been successfully deployed in wet, sticky applications across Southeast Asia and South America. Customers often highlight the robust design, easy CSS adjustment, and economical price.
For a no‑obligation consultation and personalized advice on what causes cone crusher packing and how to fix for your plant, simply click the live chat icon on this page. Our online customer service team is available 24 hours a day, 7 days a week, to answer your technical questions, provide free recommendations, and help you keep your cone crusher running smoothly.
