The Kubria® cone crusher: When it’s tough, the strong emerge
The Kubria® cone crusher from thyssenkrupp has proved effective for many years under the toughest application conditions in the field of hard-rock crushing where the highest availability and first-class product quality are required. It is used mainly in the aggregates industry for secondary and tertiary crushing of granite, basalt, gneiss and other hard rock, as well as in the mining and cement industries.
Design and function of Kubria® cone crusher
The Kubria® cone crusher has a hydraulically supported main shaft and fixed upper shell. Crushing takes place between the concaves in the crushing chamber and the mantle lined crushing cone which is rotated by an eccentric drive in the lower section of the crusher.
The geometry of the crushing chamber and the eccentric stroke can be individually adapted to specific crushing requirements as determined by the material characteristics. This modular concept is particularly important when the raw material properties or the product requirements change during the service life of the crusher.
The wear parts in the cone crusher are made of wear-resistant manganese steel and can be replaced easily. As all wear parts and internal components are accessible from the top, the crusher is very easy to maintain.
The lower hydraulic cylinder supports the main shaft and is used to control the gap setting. If tramp metal enters the crushing chamber, the shaft is lowered automatically, allowing the tramp metal to largely pass through the crushing chamber without damaging the crusher. The crusher can be equipped with an optional hydrostatic thrust bearing to handle extremely hard materials.
The Kubria® crusher is typically delivered with the proven Kubriamatic control system, which can be integrated into the distributed control system and the dynamic process display of the overall plant. With the Kubriamatic control system, all crusher settings and parameters can be monitored and changed during operation. The gap setting is controlled automatically according to adjustable power and pressure limits to keep the product quality of the output constant.
All versions of the Kubria® cone crushers are characterised by the fact that the material has a long retention time in the crushing chamber, with a correspondingly high number of crushing steps. As a result, a product of high cubicity is produced, which is important for meeting product standards required for concrete aggregate and other products.
Since November 2017, a new Kubria® F/M 90 cone crusher from thyssenkrupp Industrial Solutions' standard range is in operation at Ernst Krebs's Bornhöved gravel processing plant in Germany. The material produced in the Kubria® is mainly used as aggregate for concrete production, but also for the production of gravel and chippings.
The results of a material test have shown that the product even exceeds the expectations of grain shape and fracture surface. By using the Kubria® cone crusher, Ernst Krebs can meet the increased demands of the market today and in the future.
The new Kubria® series of cone crushers from thyssenkrupp offers extremely competitive machines for coarse, medium and fine crushing to the aggregate industry. Incorporating the latest technology, these machines provide:
- Crushing of hard rock, middle hard and high abrasive material: granite, basalt, iron ore, etc.
- Secondary, tertiary and quaternary crushing
- High-cubicity finished product
- Low wear and low operating expenses
- Quick change of gap settings and product sizes
- Variable crushing chamber configurations for adaptation to product requirements
- Ease of maintenance, with low maintenance downtimes
- High level of operating reliability, overload protection and process control with the Kubriamatic control system
- Solutions for mobile, semi-mobile or stationary plant requirements