Granite and basalt are the two feedstocks that most often drive buyers towards a tracked jaw crusher rather than an impact machine. They are hard and abrasive, so the crushing chamber and the wear parts take the punishment, and the setting you choose has a direct effect on how many tonnes you get per hour.
1. Start from the largest lump, not the average
A jaw crusher accepts only what physically fits between its jaws, so the first number to establish is the widest lump that will occasionally reach the hopper. Sizing for the 90th-percentile lump rather than the worst one you will ever see keeps you on a lighter machine and a smaller transport envelope; sizing for the absolute worst drives you up a size class for no daily benefit.
Where oversized material must be handled, the practical alternatives are a hydraulic breaker or a larger excavator bucket ahead of the crusher, or accepting a pre-breaking step on site. UPSEN jaw crushers are quoted with a specific maximum feed size, and that figure — not the dimension of the feed opening alone — is the one to compare against your rock.
2. The UPSEN tracked jaw range
| Model | Capacity | Max. feed size | Total weight |
|---|---|---|---|
| UJC425 | 6-8 t/h | 180×300 mm | 1,300 kg |
| UJC503 | 10-30 t/h | 250 mm | 4,300 kg |
| UJC604 | 15-50 t/h | 300 mm | 5,500 kg |
| UJC96E | 60-150 t/h | 425 mm | 19,000 kg |
| UJC906 | 80-150 t/h | 525 mm | 28,268 kg |
| UJC106 | 150-300 t/h | 630 mm | 43,268 kg |
| UJC116 | 160-500 t/h | 650 mm | 52,500 kg |
The step from the UJC906 at 28,268 kg to the UJC106 at 43,268 kg is the one most quarry operators feel: it buys a jump from 525 mm to 630 mm maximum feed and from 80–150 t/h to 150–300 t/h, but it also changes the transport category of the machine.
3. Discharge setting decides your tonnage
Every capacity figure on this site is quoted at a stated closed-side setting. Open the jaws and throughput rises while the product coarsens; close them and output falls. For hard rock the effect is more pronounced than for concrete or limestone, because the material is harder to fracture and spends longer in the chamber.
That is why the discharge range matters as much as the capacity rating. The UJC106 offers 50–180 mm and the UJC116 offers 70–200 mm. If your downstream process needs a 60 mm top size, only one of those two machines can be set to deliver it directly; the other needs a secondary stage.
4. Wear parts in abrasive rock
In granite and basalt, jaw plates are the consumable that decides your cost per tonne. The smaller UPSEN jaw units are supplied with ZgMn13Cr2 jaw plates, a manganese steel grade chosen for abrasive feed. When you compare two machines for hard rock, the figures worth asking for are the plate change interval in your material and how long a plate change takes on site — a faster change is worth more than a marginally cheaper plate.
Also check the discharge range against your wear allowance. As plates wear, the setting opens and the product coarsens; a machine with hydraulic jaw adjustment lets the operator correct for that without stopping for long.
5. Screening after a hard-rock jaw
A jaw crusher on its own produces one coarse product. To sell graded aggregate you need a screener and usually conveyors behind it. In hard rock the oversize fraction is heavy and abrasive, so a scalping screen with a robust deck is normally specified ahead of, or alongside, the jaw to take the fines out of the flow early.
UPSEN builds the UYK221 scalping screener and the UZS1230 for exactly this duty, with UTD35 and UTD40S stackers to build separate stockpiles.
Frequently asked questions
Can a mobile jaw crusher handle granite and basalt?
Yes. A tracked jaw crusher is the usual primary choice for hard abrasive rock because the chamber accepts large feed and the wear parts are designed for abrasive material. The limiting factors are the maximum feed size and the discharge range of the model you choose.
What is the largest feed size available in the UPSEN range?
650 mm, on the UJC116. The UJC106 accepts up to 630 mm.
Should I use a jaw or an impact crusher for basalt?
Jaw, in most cases. Impact crushing is better suited to softer and less abrasive material such as limestone and demolition concrete — see our jaw versus impact comparison.
Next step
Send us the rock type, the largest lump on site and the tonnage you need per shift. Quotations are prepared per project, with the chamber and wear package matched to your material — request a specification and quotation.