A jaw crusher is the workhorse of any rock crushing plant — the reliable first stage that reduces large stones, ore, and demolition waste down to a manageable size. From small farm-scale aggregate production to full quarries, choosing the right jaw crusher affects your whole processing line's throughput, product quality, and operating cost. This guide covers how jaw crushers work, PE vs PEX types, feed and discharge sizing, capacity matching, and 2026 pricing.
How a Jaw Crusher Works
A jaw crusher uses a fixed jaw plate and a moving (swinging) jaw plate that form a V-shaped crushing chamber. The moving jaw moves in an eccentric arc, compressing rock between the two plates. Rock is fed from the top, and as the moving jaw opens and closes, material is crushed smaller until it falls out through the adjustable gap at the bottom (the discharge opening).
Key components include:
- Fixed jaw plate — stationary hardened plate on the frame
- Moving jaw plate — swinging plate driven by the eccentric shaft
- Eccentric shaft and flywheel — the drive mechanism that converts motor power into crushing force
- Toggle plate — the safety link that transmits force and protects the crusher from overload
- Adjustable discharge opening — shim or hydraulic adjustment for output size
- Feed chute — directs oversized rock into the chamber mouth
PE vs PEX Jaw Crushers
| Feature | PE (Primary/Coarse) | PEX (Fine/Secondary) |
|---|---|---|
| Stage | First-stage crushing | Second-stage crushing |
| Feed Size | Large (up to 1000 mm+) | Medium (feeds from PE output) |
| Output | Coarse, larger discharge | Finer, more consistent product |
| Capacity | Higher throughput | Lower, finer product |
| Typical Setup | Standalone primary | Follows a PE crusher |
Most operations run a PE jaw crusher as the primary crusher, then a PEX jaw crusher, cone crusher, or impact crusher in the secondary stage. A small site processing its own aggregate may only need a single PE jaw crusher.
Feed and Discharge Size Selection
Two numbers define a jaw crusher's size: the feed opening (how big a rock it can swallow) and the discharge opening range (what size product it can produce).
Feed opening — the width by length of the top mouth, such as 250×400 mm or 750×1060 mm. It must accept your largest rock. A good rule: the square root of the product of feed width and length should be about 80-85% of your largest feed size.
Discharge opening (CSS) — the closed-side setting controls final product size. It's adjustable via shims (manual) or hydraulic cylinders. A wider CSS gives coarser, higher-volume output; a narrower CSS gives finer product at lower throughput.
| Model Size | Feed Opening | Approx. Capacity | Typical Feeding Use |
|---|---|---|---|
| Mini / lab | 60-200 mm | 0.5-5 t/h | Testing, small samples |
| Small production | 250-400 mm | 5-20 t/h | Small quarries, farm aggregate |
| Medium | 500-750 mm | 30-90 t/h | Regional aggregate plants |
| Large | 900 mm + | 100-500 t/h | Large quarries, mines |
Capacity Matching and Motor Power
| Crusher Class | Capacity | Motor Power | Discharge Setting |
|---|---|---|---|
| Small | 1-20 t/h | 5.5-37 kW | 20-60 mm |
| Medium | 30-90 t/h | 45-110 kW | 40-150 mm |
| Large | 100-500 t/h | 110-400 kW | 75-300 mm |
A reliable sizing rule: choose a jaw crusher whose nominal capacity is about 20-30% above your required production rate. This headroom handles feed-size variation, hard rock, and margins for downtime, without paying for a machine far larger than you need.
Jaw Plate Life and Maintenance
Jaw plates are the main wearing parts and their lifespan directly affects operating cost. Hard rock crushes plates faster than soft aggregate. Consider:
- Reversible jaw plates — can be flipped top-to-bottom to double usable life
- Hardened manganese steel — standard wear material for tough rock
- Lubrication points — easy access for bearing and toggle greasing
- Protection — magnetic/detection systems to keep tramp metal out of the chamber
Ask about replacement jaw plate cost and availability before buying — cheap plates may save money upfront but drive higher long-term wear costs.
2026 Jaw Crusher Price Guide
| Crusher Class | Feed Opening | Capacity | Price Range (USD) |
|---|---|---|---|
| Mini / lab jaw crusher | 60-200 mm | 0.5-5 t/h | $1,500 - $5,000 |
| Small production crusher | 250-400 mm | 1-20 t/h | $5,000 - $15,000 |
| Medium crusher | 500-750 mm | 30-90 t/h | $20,000 - $60,000 |
| Large industrial crusher | 900 mm + | 100-500 t/h | $60,000 - $250,000 |
FOYA jaw crushers are built for rugged primary service with reversible manganese jaw plates and straightforward maintenance access. Factory-direct pricing includes worldwide shipping arrangements and technical support.
Frequently Asked Questions
How do I choose the right size of jaw crusher?
What is the difference between a PE and a PEX jaw crusher?
How much does a small jaw crusher cost in 2026?
How do I adjust the discharge opening of a jaw crusher?
Ready to Buy a Jaw Crusher?
FOYA Machinery offers jaw crushers from mini laboratory units to large 500 t/h production machines, built for reliable primary crushing. Every model includes reversible manganese jaw plates, an adjustable discharge, and safety interlocks. Contact our team for help sizing the right crusher for your rock type, feed size, and target production rate.
Also explore: Jaw Crusher product page | Hammer Crusher | Feed Hammer Mill