Recycling screens, hammers, and knives wear as material passes through the machine. Changes in their dimensions or shape can affect product size, throughput, and maintenance needs.
Changes That May Indicate Wear
Watch for larger or less consistent output, enlarged screen openings, blunt cutting edges, chipped components, or new vibration. These changes can have several causes, so inspect the equipment and follow the manufacturer’s maintenance guidance.
Screen Openings And Plate Condition
Screen openings can enlarge as material rubs against them. Cracks, thin sections between holes, or damaged mounting areas may also affect the screen’s performance.
Compare the worn screen with its original drawing or an unworn sample. Record the opening size, pattern, overall dimensions, and mounting arrangement when ordering a replacement.
Hammer Shape And Wear Across The Set
Hammer tips can lose their original shape as they repeatedly strike material. Uneven wear across a set may affect machine balance and operation.
Follow the equipment manufacturer’s requirements for inspection, replacement sets, and balancing. Do not assume that replacing only the most visibly worn hammer will resolve vibration.
Knife Edges And Mounting Details
Blunt, chipped, or damaged knife edges can affect cutting performance. A replacement needs to match the machine’s dimensions, mounting holes, and cutting geometry.
Selecting Replacement Material
The appropriate material depends on the processed waste, abrasion, impact, corrosion, and the machine design. Hardox® grades are used for a range of recycling wear parts, but the grade and thickness need to suit the specific component.
What To Include In An Enquiry
Send BSF the machine make and model, part drawing or sample, dimensions, hole pattern, and photos of the worn part. Explain what the machine processes and describe any change in output or vibration.
Include the current material and replacement history if available. These details help BSF discuss matching replacement wear parts and fabrication requirements.