Hewitt Robins Impactors are engineered for high-capacity material reduction, providing efficient and reliable crushing solutions for a wide range of applications. The material enters through the feed opening into the striking arc of the rotating hammers, where it is flung against the grinding ledges of the grinding wall. From there, it rebounds back into the hammers, ensuring continuous impact until it reaches the required size. The processed material is then separated and discharged through the discharge grates, with the grate bar gap spacing determining the final product size. The rotor’s circumferential speed can be adjusted to fine-tune the granulometry, allowing for precise control over the output.
Our impactors are designed for maximum efficiency, featuring a high throughput capacity due to an extensive grinding grate and screening area. The large intake cross-section allows for bulky feed materials, while the compact, low-height construction minimises space requirements. With a high and constant capacity, our impactors deliver a high reduction ratio, making them suitable for a broad range of applications. The precisely balanced configuration of the hammer arms and hammer heads ensures smooth operation with minimal vibration, enhancing overall performance and longevity.
Built for durability and ease of maintenance, Hewitt Robins Impactors feature hammer arms made from high-quality steel and hammer heads manufactured from alloy steel or compound casting, both of which can be easily replaced. The housing is lined with replaceable abrasion-resistant wear plates, ensuring long-lasting protection against material impact. Hydraulic opening of the hinged sections allows for quick access, simplifying the replacement of wear and spare parts. Additionally, the symmetrical structure of the mill housing enables the rotor rotation direction to be reversed, further extending service life and optimising performance.
With over 130 years of experience, Hewitt Robins continues to set the global standard in the specialist material handling sector.
