Hammer Mill Rotor & Bearing Assembly
ATLUS designed a rotor and bearing assembly for a small hammer-mill shredder processing mixed aluminium products. The replacement fits within the existing shredder body while providing the strength, wear resistance and shock-load tolerance required for a duty that the original rotor could not sustain.
SECTOR
Bulk Materials, Recycling
SERVICE
Design Engineering
MATERIAL
Mixed Feedstock
YEAR
2025
Project at a glance
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A Necessary Retrofit
The original rotor and cast bearing housings were not sufficiently durable for the repeated impact and abrasive conditions created by mixed aluminium feedstock.
A stronger replacement was required without changing the existing shredder body, available installation envelope or principal mounting interfaces.
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Built Tough
ATLUS redesigned the rotor geometry, shaft and bearing arrangement around the existing machine interfaces and required size-reduction duty.
Hardox rotor discs and Toolox hammer pins were combined with, single-piece billet bearing housings and labyrinth rings.
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A More Durable Assembly
The finished assembly fits within the existing shredder body, allowing the surrounding plant to remain the same rather than be extensively modified or replaced.
Billet-machined bearing housings provide a stronger support than the original cast components, while the selected rotor materials and bearings are better suited to abrasive feedstock and repeated shock loading.
Key Outcomes
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Replacement assembly matched to the existing shredder body, zero alterations needed
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Wear-resistant Toolox hammer pins increase maintenance interval from 250 to 1,000 operating hours
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Cast bearing housings and seals replaced with single-piece billet components
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Rotor, shaft and bearings verified using a 2.5× shock-load factor, with a safety factor of ≥2.0
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