A gyratory crushes continuously: the mantle gyrates inside a fixed concave, so material is broken on every part of the stroke rather than on one forward-and-back cycle. That is why, above roughly 700–800 t/h, gyratories take over from jaw crushers in hard-rock primary duty — the throughput per unit of installed power is higher and the feed opening is far more tolerant of run-of-mine rock.
The trade-off is height and capital. A gyratory needs a tall, heavy foundation and is a project rather than a purchase. It makes sense where the mine has decades of planned production and the primary will run for 6,000+ hours a year.
Typical duty: primary crushing of iron ore and other hard metal ores, and large quarry operations feeding 1,500–2,500 t/h downstream circuits.
Product and workshop photographs from our own production lines — Hangzhou, Weihai and Wuhu.
Design & working principle
- Continuous crushing action — higher throughput per installed kW than an equivalent jaw at large tonnages.
- Hydraulic main-shaft positioning — discharge setting adjusted hydraulically, with the shaft supported for controlled release on tramp metal.
- Large feed opening relative to capacity — tolerates the wide gradation of run-of-mine feed without a scalping stage in front.
- Heavy fabricated and cast shell — designed for the 232 t class at the top of the range; assembly and testing are done in our own works.
- Stable throughput over liner life — the crushing chamber is less sensitive to liner wear than a jaw's, so tonnage does not fall away as plates wear.
Parameter table
Published as a real HTML table, not a PDF or an image — so it can be read, copied and indexed. Figures are from our own product documentation; the datasheet and GA drawing follow on request.
| Model | Feed opening (mm) | Max feed size (mm) | Discharge setting (mm) | Capacity (t/h) | Power (kW) | Weight (t) |
|---|---|---|---|---|---|---|
| SK.56.14 | 560 | 480 | 40–80 | 750–1,500 | 400 | 38 |
| SK.50.20 | 500 | 420 | 50–100 | 1,000–2,000 | 500 | 80 |
| SK.90.22 | 900 | 760 | 150–200 | 1,000–2,000 | 400 | 120 |
| SK.120.24 | 1,210 | 1,020 | 210–230 | 1,800–2,500 | 400 | 232 |
Capacity depends strongly on discharge setting, ore work index and feed gradation. For metal-ore primary duty we ask for a Bond work-index figure or a representative ore sample before recommending a model.
Configuration & options
Drive
Motor and drive arrangement sized to the duty cycle; soft-start recommended above 400 kW on weak grids.
Discharge control
Hydraulic setting adjustment with position indication.
Liner profile
Concave and mantle profiles matched to your ore abrasiveness, with a scheduled liner-life plan supplied at handover.
Site services
Foundation and anchor-bolt drawings, erection sequence, and commissioning supervision by our engineers.
Wear strategy
We provide a first-year wear-parts forecast based on your ore, so your store does not discover the requirement during a shutdown.
How to choose the right model
- A gyratory is a decision about the next 10–20 years, not about this quarter's tonnage. If your primary duty is below roughly 700 t/h, a jaw crusher will be the better commercial answer and we will say so.
- Consider the downstream circuit at the same time. A gyratory set coarse wants a large secondary cone; the two machines have to be designed as a pair.
- Ask us for the foundation load data early — this decision is normally made before the civil works are tendered, and late changes are expensive.
Delivery & service commitments
| Item | Commitment |
|---|---|
| Standard machine lead time | 60 days from order confirmation |
| Annual production capacity / monthly shipments | 1,000 units per year · 100 units per month (all ranges) |
| Spare parts supply | Within 2 months worst case; typically far faster for models in current production |
| Engineer attendance on site | Within 10 days of the requirement being agreed, for export markets |
| Remote support | Response within one working day; included, not charged |
| Warranty | Terms stated in the contract in the same words published on this site |
| Installation & commissioning | Guidance and supervision by our engineers, through to acceptance at rated capacity |
| Buyer provides | Site civil works, electrical installation and site access — drawings and answers supplied |
We supply the machines, the drawings, the commissioning support and the parts. We do not operate your plant after handover.
Common questions
At what tonnage does a gyratory beat a jaw crusher?
Broadly above 700–800 t/h in hard-rock duty, and sooner where the feed gradation is wide. Below that, the foundation cost of a gyratory is hard to justify. We will run the comparison for your specific duty if you send feed gradation, target tonnage and ore type.
Can a gyratory handle wet or sticky ore?
Better than a jaw in some respects, because the crushing action is continuous and the chamber is less prone to packing. Very sticky ore still calls for a scalping arrangement ahead of the primary. Tell us the moisture range at your site.
What is the realistic delivery time for a 232 t unit?
Standard machine lead time is 60 days, but at the top of the gyratory range please treat that as a starting point and confirm with us at order — we will give you a firm date rather than a marketing one.