Spring Cone Crusher

Reliable Spring Overload Protection

The multi-spring or cylinder spring assembly surrounding the support frame provides automatic overload protection when uncrushable material such as tramp iron enters the crushing chamber. The bowl assembly lifts against the spring force, allowing the foreign object to pass through, then immediately returns to the set crushing position — protecting the eccentric shaft, mantle, concave, and drive system from catastrophic damage without any manual reset or production shutdown.

Versatile Chamber Configuration for Multiple Products

By selecting different mantle and concave liner profiles — coarse, standard, medium, fine, or extra-fine — the same Spring Cone Crusher base machine can be optimized for secondary crushing (producing 20–50 mm aggregate) or tertiary crushing (producing 5–20 mm aggregate or sand-making feed), eliminating the need for separate machine models for different crushing stages and reducing spare parts inventory complexity.

High Reduction Ratio, Excellent Particle Shape

The optimized eccentric throw and crushing chamber geometry deliver a reduction ratio of 4:1 to 6:1 per pass, producing a well-shaped, cubical product with low elongated and flaky particle content. This makes the Spring Cone Crusher the preferred secondary and tertiary crushing solution for concrete aggregate production, asphalt surface course aggregate, and railway ballast applications where particle shape specifications are strict.

Robust Heavy-Duty Construction for Continuous Operation

The main frame and upper frame are cast from high-strength alloy steel in one piece, eliminating the structural weak points associated with fabricated welded frames. The eccentric bushing, main shaft bushing, and bowl liner backing are all replaceable without replacing the main frame or shaft, minimizing major overhaul costs and maximizing machine availability over its service life.

Forced Circulation Thin-Oil Lubrication System

The dedicated forced-circulation lubrication unit continuously circulates filtered, temperature-controlled oil to the eccentric bushing, main shaft spherical bearing, bevel gear set, and countershaft bearings. Oil temperature, pressure, and flow are continuously monitored, with automatic shutdown triggered if any parameter exceeds safe limits — preventing bearing failures caused by lubrication interruption, contamination, or overheating.

Simple Discharge Setting Adjustment

The closed-side setting (CSS) is adjusted by rotating the threaded adjusting ring, which raises or lowers the bowl liner to increase or decrease the discharge gap, directly controlling the output product size. This adjustment can be performed during operation without stopping the crusher, allowing operators to compensate for liner wear and maintain consistent product gradation throughout the full liner service life without production downtime.