The Rockwell Vertical Mill 21-100 is a robust grinding machine designed for precision milling in sand and aggregate processing lines. Its vertical spindle design ensures efficient material reduction, making it ideal for producing high-quality manufactured sand (M-Sand) from hard rocks like granite, basalt, or limestone.
| Parameter | Value |
|---|---|
| Max Feed Size | 30 mm |
| Output Size Range | 0-5 mm (adjustable) |
| Motor Power | 75 kW |
| Capacity | 50-100 t/h |
| Shaft Speed | 1,200 rpm |
The mill excels as a tertiary crushing or sand-shaping unit downstream of jaw crushers and cone crushers. Paired with vibrating screens and classifiers, it ensures uniform grain distribution—critical for concrete and asphalt applications.
– Q: Can it handle wet materials?
A: No, the Rockwell 21-100 operates optimally with dry feed (<3% moisture).
– Q: Wear part lifespan?
A: Tungsten carbide rollers last ~800 hours under abrasive conditions.

A Texas-based plant achieved 95% cubical particles using Rockwell 21-100 after a cone crusher, reducing cement dependency in ready-mix concrete by 12%. Maintenance intervals were extended by 30% compared to horizontal mills.

For rugged performance in aggregate refinement, this vertical mill balances precision and durability—key for modern sand processing demands.