New Crusher Product Specifications: A Comprehensive Overview
The latest addition to the crushing equipment lineup is a high-capacity cone crusher designed for secondary and tertiary crushing applications in hard rock mining and aggregate production. With a maximum feed opening of 350 mm and a closed side setting range from 6 mm to 38 mm, this machine delivers throughput rates between 200 and 450 metric tons per hour, depending on material hardness and desired product size. Its power rating of 315 kW, combined with an advanced hydraulic adjustment system, ensures consistent product gradation while reducing downtime for liner changes. The total weight of the crusher is approximately 28 metric tons, making it suitable for both stationary plants and mobile chassis installations.
Key Mechanical Specifications
The crusher’s main frame is constructed from high-strength cast steel, with a reinforced top shell that withstands peak crushing forces exceeding 800 kN. The eccentric assembly features a forged alloy steel shaft supported by spherical roller bearings, which are lubricated via an automated oil circulation system with temperature monitoring. The crushing chamber profile follows a long-stroke design with a steep head angle, optimizing particle reduction ratios up to 6:1 in closed circuit operation. The mantle and concave liners are made from manganese steel (14% Mn) with optional chrome-moly inserts for extended wear life in abrasive applications.
Hydraulic and Control Systems
A fully integrated hydraulic system controls the crusher’s setting adjustment, tramp release, and clearing functions. The hydraulic cylinder can adjust the closed side setting remotely within seconds while the machine is running under load—a feature that eliminates manual shimming and reduces operational risk. Tramp iron protection is provided by accumulator-based relief valves that automatically raise the main shaft when uncrushable material enters the chamber; the system resets after clearing without operator intervention. An optional automation package includes a programmable logic controller (PLC) that monitors motor power draw, bearing temperature, oil flow rate, and feed level via ultrasonic sensors. This data enables real‑time optimization of crusher performance through variable frequency drive control on the feeder.
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The crusher is driven by a direct‑coupled electric motor rated at 315 kW (400 V / 50 Hz or 460 V / 60 Hz) through a flexible coupling to reduce torsional vibration. No external sheaves or belts are required, resulting in mechanical efficiency above 95%. The motor’s starting current is limited by a soft‑starter included as standard equipment; an optional VFD allows gradual speed variation between 70% and 100% of rated speed to fine‑tune product shape or compensate for changing feed conditions. Specific energy consumption ranges from 0.8 to 1.2 kWh per metric ton of crushed material at typical settings—a competitive figure compared to older cone crusher models.
Maintenance and Serviceability
All major wear components—mantle, concave segments, bowl liner—are accessible through the top service hatch without removing the feed hopper or main shaft assembly. Liner replacement time averages four hours for two experienced technicians using standard lifting tools provided with the machine. The lubrication system includes dual filters (25 μm nominal) with pressure differential indicators; oil change intervals are recommended every 500 operating hours under normal conditions but can be extended using synthetic gear oils approved by the manufacturer. Bearing replacement requires partial disassembly of the eccentric assembly but can be completed within one shift due to modular sub‑component design.
Application Guidelines
This model performs optimally when fed with material having compressive strength up to 300 MPa (e.g., granite, basalt, quartzite). For softer materials such as limestone or dolomite where abrasion rather than compression dominates wear patterns, alternative liner profiles with increased throw angles are available as factory options. Recommended minimum closed side setting for most aggregates is 10 mm; below this value throughput drops sharply while power draw increases due to recirculating loads in closed circuit operation.
Dimensions and Installation Requirements
The crusher measures approximately 2.8 m in height (including base frame), with a footprint of about 3.5 m × 2.2 m when installed on its concrete foundation pad weighing no less than three times the machine weight for vibration damping clearance under dynamic loading conditions.
In summary this new cone crusher combines proven mechanical reliability with modern automation features delivering higher throughput per unit power consumption than previous generation models while simplifying maintenance procedures across all common hard rock crushing applications found worldwide today