subject: Jaw Crusher Series [print this page] The SBM eccentric jaw crusher is the best equipment for primary crushing applications that involve extremely hard or abrasive feeds or require a sized product with minimum fines. The unique overhead eccentric design is superior to the straight-line action of the swing-jaw type crusher because of its powerful force-feed crushing action with two strokes for each revolution on the flywheel. This minimizes compaction and keeps the discharge materials flowing freely, which in turn significantly increases output, lowers cost per ton, reduces wear, and allows the crushing of a wider range of materials. The SBM jaw crusher is engineered to eliminate crusher strain caused by excessive stress that can cause premature failure from fatigue.
Jaw crushers are equipped with one fixed and one moveable crushing jaw (moving jaw), both of which support crushing plates (wearing parts) in several versions. They form a wedge-shaped crushing zone. The walls of the crushing zone are made of replaceable wearing sheets. Crushing is done between the two crushing jaws. The moving jaw of the single toggle jaw crusher moves elliptically. A pendulum motion is being carried out by the double toggle jaw crusher.
The crushing force is produced by an eccentric shaft. Then it is transferred to the crushing zone via a toggle plate system and supported by the back wall of the housing of the machine. Spring pulling rods keep the whole system in a condition of nonpositive connection. Centrifugal masses on the eccentric shaft serve as compensation for heavy loads. A flywheel is provided in the form of a pulley. Due to the favorable angle of dip between the crushing jaws, the feeding material can be reduced directly after entering the machine. The final grain size distribution is influenced by both, the adjustable crusher setting and the suitability of the tooth form selected for the crushing plates.
The Special Characteristics
An adjustable wedge system makes infinite adjustments of the crusher setting possible. The systems, spindles exert a direct influence on the thrust-bearing trestle. All parts of the adjusting system are accessible, maintenance-free and easy to replace.
All of the toggle plates are provided with replaceable tempered pressure bars on both sides, which work according to the move on rolling contact principle. They are maintenance-free. A lubrication system ensures sufficient grease supply to all other bearing points.
The Application Fields of Jaw Crusher
This jaw crusher series PF has properties of large crushing ratio, even granularity, simple structure, reliable operation, easy maintenance, and low cost. So this kind of jaw crusher can be widely used in mining, metallurgy, building material, highway, railway, water project, chemical industry, etc, for crushing various material with compression strength less than 320MPa.
Jaw Crusher Features:
- Designed to meet todays - Automated Jaw Adjustment - Overload Protection System - Efficient crusher Motion maximizes product output - Reduced requirement for secondary crushing - High Production Rates - Low Operational Costs - Simplified state of the art mainframe - High Stress area welds eliminated - Cross beam fixed with freeze pins - Mass and section thickness optimized - Low head room for mobile applications
Process of Jaw Crushing Plant
The Big materials are fed to the jaw crusher evenly and gradually by vibrating feeder through a hopper for the primary crushing. After first crushing, the material will transferred to impact crusher or cone crusher by belt conveyor for secondary crushing; the crushed materials will then transferred to vibrating screen for separating.
