allis chalmers 120 ore crusher
The Allis-Chalmers 120 Ore Crusher: A Legacy in Aggregate Processing
The aggregate and sand industry relies heavily on robust crushing equipment to transform raw materials into high-quality construction-grade products. Among the historic names in this field, Allis-Chalmers stands out for its durable and efficient machinery, including the Allis-Chalmers 120 Ore Crusher. This machine exemplifies the engineering excellence demanded by hard rock and ore processing applications.
Industry Background
Aggregate production is a cornerstone of infrastructure development, supplying materials for roads, concrete, and asphalt. Primary crushing is critical to reducing large rocks into manageable sizes for further processing. The Allis-Chalmers 120, designed as a gyratory crusher, was built to handle high-capacity primary crushing with reliability. Its heavy-duty construction made it ideal for mining and quarrying operations where abrasive ores and tough aggregates were common.
Product Core Features
1. Gyratory Crushing Mechanism: The 120 model utilized a conical head gyrating within a concave bowl, ensuring consistent particle size reduction with minimal fines generation.
2. High Capacity: Designed for large feed sizes (up to 60 inches), it delivered throughputs suitable for industrial-scale operations.
3. Durability: Cast steel components and manganese liners provided extended service life under harsh conditions.
4. Adjustable Discharge: Operators could fine-tune output gradation by modifying the crusher’s eccentric throw or discharge setting.
Common FAQs
- Q: Was the Allis-Chalmers 120 used solely for ore?
- Q: How does it compare to modern cone crushers?
- Q: Are parts still available?
A: While optimized for hard ores, it also processed granite, basalt, and other aggregates in quarries.
A: Modern designs offer automation and energy efficiency but lack the sheer brute-force reliability of older gyratory units like the 120.
A: Some aftermarket suppliers stock wear parts, but full support may require retrofitting or salvage sourcing due to discontinuation.
Engineering Case Example
A limestone quarry in Texas retrofitted an aging Allis-Chalmers 120 with updated liners and bearings, extending its service life by another decade while maintaining a throughput of 800 tons per hour—proving that well-maintained legacy equipment can remain competitive alongside newer models when properly serviced.
Conclusion
Though newer technologies dominate today’s market, machines like the Allis-Chalmers 120 remain a testament to rugged engineering tailored for demanding applications—lessons still relevant in designing durable aggregate solutions today.