CSI-1212 Secondary Impact Crusher 120-150 T/H

The CSI-1212 secondary impact crusher represents a sophisticated solution for medium-capacity crushing operations, delivering consistent performance in the range of 120 to 150 tons per hour. This stone crushing machine combines robust engineering with intelligent design features that address the real-world challenges faced by aggregate producers and mining operations. With its 1,100 x 1,250 mm rotor dimensions and 250 mm maximum feeding capacity, this model strikes an optimal balance between throughput efficiency and operational flexibility.

What sets this stone crushing machine apart is its versatile three-step pendulum system, which enables operators to perform primary, secondary, and tertiary crushing within a single unit. This adaptability eliminates the need for multiple machines in certain applications, reducing both capital investment and site footprint requirements. The rotor design deserves particular attention—featuring a high-strength, open disc configuration that has been stress-relieved to withstand the intense forces generated during continuous operation. Large spherical roller bearings support the rotor assembly, ensuring smooth rotation even under heavy loads while minimizing maintenance intervals.

Material selection plays a crucial role in the CSI-1212's durability. The breaker bars utilize either high chrome or manganese alloy compositions, chosen specifically for their wear resistance characteristics. These components directly influence the crusher's ability to produce the desired cubic-shaped product while managing operational costs. The rear door access system demonstrates practical engineering—maintenance teams can reach breaker plate liner bolts without extensive disassembly, cutting downtime significantly during routine service procedures.

Hydraulic systems control two critical functions in this model. Twin hydraulic cylinders facilitate body opening for inspection and maintenance access, while a separate hydraulic adjustment mechanism allows operators to modify breaker plate positioning during active crushing. This real-time adjustment capability means production parameters can be fine-tuned without stopping the operation, responding to variations in feed material or product specifications on the fly.

The discharge opening has been proportioned generously to prevent bottlenecking and ensure smooth material flow. Combined with the crusher's high reduction ratio, this design feature contributes to consistent product gradation and minimized recirculation. At 21,500 kg, the CSI-1212 provides substantial mass for stable operation, yet remains manageable for transportation and installation. The 200 kW motor delivers sufficient power to maintain rotor speed under varying load conditions, ensuring reliable performance throughout production shifts.

CONSTMACH secondary impact crushers address a fundamental challenge in aggregate production: balancing output quality with equipment longevity. The open rotor design reduces material buildup and simplifies cleaning, while the stress-relieved construction prevents premature failure from fatigue. These engineering choices translate into measurable benefits—longer service life, reduced spare parts consumption, and more predictable maintenance schedules. For operations processing medium-hard materials where product shape matters, this stone crushing machine provides a dependable platform that performs shift after shift with minimal intervention.