Broad Size Range
The Munson Security Destructor is offered in three sizes with throat openings ranging from 10 to 30 in (254 to 1829 mm). The width of the feed throat is 11 in (279 mm) for all models.
Parallelogram Cutters Minimize Power Requirements
The rotor assembly is comprised of inter-connected parallelogram cutters arranged in a progressive configuration to stagger the distribution of rotational torque. Whereas conventional knife cutters rely on a simultaneous cutting action over the entire length of the cutting knives, the staggered blades of the Munson Security Destructor impart six times more force per inch at the instant of cutting than comparably sized knife-type cutters of equivalent horsepower, providing more thorough reduction of hard-to-reduce materials.
Parallelogram cutters are machined from a select grade of tool steel. For high strength and long life in abrasive applications they are heat-treated.
Staggered cutting instantly creates a major granulated reduction of product that minimizes retention period within the cutting chamber and assists in reducing the percentage of fines, thereby increasing the rate of throughput. Conventional knife cutters often shear product into strips that are retained until the knives can further reduce these strips.
Spiral Feeding Effect
The parallelograms are pre-drilled and self-aligning. Their cutting sequence creates a natural spiral feeding effect, moving the material from the ends of the cutting area and toward the center. This action greatly reduces the possibility of material becoming trapped between the shaft and end plates as well as moving material away from the bearings extending the shaft bearing life. If desired, the parallelograms may be arranged to feed the material in a right-hand or left-hand direction within the cutter, or in a non-directional, intermittent fashion.
Stationary Bed Knives
Bed knives are secured to solid anvils to prevent movement. Bed knives feature reversible cutting edges that double their functional life. They are easily accessible from the outside of the cutter housing for quick removal or adjusting. The bed knives are adjustable to compensate for sharpening and wear on the parallelogram cutters.
Bedscreen Size Determines Finished Output
Munson can furnish classifying screens in a variety of sizes to suit customer requirements. The screens are available with round perforations from 1/32" to 1½" (.79 to 38.1 mm) diameter, and with special square perforations (typically for fiberglass) on request. Screens are held securely in place by a quick-release support mechanism for rapid removal and replacement.