The short answer
Limestone above roughly 500 mm feed: jaw crusher first, impact crusher second. Feed already below 300 mm (blasted well, or rip-rap): impact crusher alone may do the whole job. The jaw is your insurance against big rock; the impact is your tool for shape.
The comparison that matters
| Factor | Jaw crusher | Impact crusher |
|---|---|---|
| Feed size tolerance | Excellent — takes blasted rock to 1200 mm | Limited — typically ≤500 mm for mid-size units |
| Product shape | Flaky at fine settings; acceptable for base course | Cubical, well-graded — passes concrete specs |
| Reduction ratio | 4–6:1 per pass | 10–20:1, can replace two stages |
| Wear cost on limestone | Low — jaw plates last months to years | Moderate — blow bars weeks to months |
| Capital cost per t/h | Lower at primary duty | Higher, but may eliminate a stage |
| Sensitivity to clay/moisture | Tolerates sticky feed reasonably | Packs and blinds with wet, clayey feed |
Three questions before you choose
- What is your maximum feed size? Measure it at the quarry face, not in the middle of the pile. If any rock exceeds the impactor's inlet, you need a jaw ahead of it.
- What does the product spec say about flakiness? Road base often tolerates jaw-crushed material; concrete aggregate usually demands impact shaping.
- What is your abrasive index? Limestone with high silica content (chert bands) wears blow bars fast — send a sample and we will test it before recommending.
Reference configurations we build
| Plant | Sequence | Output |
|---|---|---|
| 100 t/h aggregate | Feeder → PE 600×900 jaw → PF-1210 impact → 3-deck screen | 0–5, 5–10, 10–20, 20–31.5 mm |
| 250 t/h aggregate | Feeder → PE 750×1060 jaw → PF-1315 impact → 4-deck screen | Four fractions + manufactured sand option |
| 80 t/h road base only | Feeder → PE 600×900 jaw → screen scalping | Single-stage, no impactor needed |
Reference flows, not fixed packages — your material test and product list set the final configuration.
See the machines
Factory-direct from Gongyi
- Built in Gongyi. Machines are welded, machined and assembled at our own production base in Gongyi, Henan — no trading-company margin.
- Test-run before shipment. Every line is trial-run with material before it leaves the workshop; you receive video evidence with the inspection report.
- Spare parts from stock. Wear parts and standard components ship with the machine, with factory stock behind every order.
- 12-month warranty. Core machinery is covered for 12 months, backed by lifetime technical support from our engineers.
Get a factory quotation
Send us your raw material, target capacity and destination port. Our engineers will reply with a matched configuration, ex-works price and production schedule.
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