01Mineral Ore
Primary crushing of coarse run-of-mine ore to a size suitable for further crushing and beneficiation. Jaw plate material is selected for the abrasiveness of the ore.
Mining and Mineral ProcessingJaw Crusher – Compression Crusher for Primary Crushing
PRO MAKINA · Jaw Crusher
- Crushing principle
- Compression between jaws
- Stage
- Usually primary (first stage)
- Output control
- Adjustable closed side setting
- Wear parts
- Fixed and moving jaw plates
Overview
First-Stage Crushing of Coarse, Hard Material
In a jaw crusher, material is crushed by compression between a fixed jaw and a moving jaw driven by an eccentric shaft. As the moving jaw approaches the fixed jaw the material is squeezed; as it moves away the broken pieces descend in the V-shaped crushing chamber.
Pieces leave the crusher once they are small enough to pass the lower gap between the jaws (the discharge setting). Product size is mainly determined by this setting, which can be changed with the adjustment arrangement.
Thanks to a large feed opening, jaw crushers are used for first-stage (primary) crushing of coarse quarry rock, ore and concrete demolition waste. The product is usually processed further by secondary crushing and screening.
01Process Flow
Jaw Crusher Material Flow
The diagram shows the typical flow in which the jaw crusher takes coarse feed at the opening and discharges it through the discharge setting. Feeder, screening and secondary crushing are separate equipment.
Scroll horizontally to view the full diagram.
Material line
- 1
Coarse feed: Rock or ore is fed steadily to the crusher opening by a feeder.
- 2
Compression between jaws: The moving jaw squeezes the material against the fixed jaw.
- 3
Descent in the chamber: Broken pieces move down the V-shaped chamber.
- 4
Discharge through the setting: Product passing the setting goes to a conveyor or the next stage.
Removing fines before the crusher (pre-screening) reduces unnecessary load and wear on the jaws.
02Applications
Jaw Crusher Applications
01
02Quarry Rock and Hard Stone
First-stage crushing of coarse blasted quarry rock. The feed opening is sized for the largest feed lump.
Screening and Classification
03Concrete and Demolition Waste
Pre-crushing concrete and construction demolition waste in recycling lines. Removal of rebar and contaminants is done by other equipment in the line.
Recycling and Waste Management
03Design & Manufacturing
Custom Jaw Crusher Design and Manufacturing
PRO MAKINA engineers jaw crushers around the largest feed size, material hardness, target discharge size and capacity. Frame, jaw geometry and plates, eccentric shaft and bearings, flywheel, drive and adjustment are designed together.
- Opening sized to the feed
- Replaceable jaw plates
- Eccentric shaft and heavy-duty bearings
- Discharge setting adjustment
Process Design Data
- 01
Feed
Largest lump size and required feed opening.
- 02
Material
Hardness, abrasiveness, moisture and fines content.
- 03
Discharge
Target product size and discharge setting range.
- 04
Mechanical Design
Jaw geometry, eccentric shaft, bearings and frame.
- 05
Drive and Safety
Motor and belt drive, flywheel, guards and maintenance access.
Feed opening, capacity and motor power are calculated from material and line data; no generic values are stated on this page.
04Gallery
Jaw Crusher Photo Gallery
05FAQ
Jaw Crusher FAQ
How does a jaw crusher work?
The moving jaw, driven by an eccentric shaft, approaches and moves away from the fixed jaw. Material is crushed by compression and leaves once it can pass the discharge setting.
At which stage is a jaw crusher used?
Thanks to its large feed opening it is usually a first-stage (primary) crusher; its product is mostly processed further by secondary crushing and screening.
How is product size adjusted?
Product size is set by the lower gap between the jaws and can be changed with the crusher's adjustment arrangement.
Which parts wear?
Fixed and moving jaw plates and side liners. The plates are replaceable.
What information is needed for a quotation?
Material type, hardness and abrasiveness, largest feed size, target discharge size and hourly capacity.
06Resources
Related Machines and Plants
Primary Impact CrusherFirst-stage impact crushing with a blow bar rotor and aprons.Secondary Impact CrusherSecond-stage impact crushing of pre-crushed material.Vertical Shaft Impact CrusherCrushing by impact after acceleration in a vertical shaft rotor.Screening SystemsSeparating bulk material by particle size.
Related machine groups:Screening SystemsConveying SystemsSilos & Feeding SystemsDust Collection Systems
Technical Quotation
Request a technical quotation for a jaw crusher
Share your material, largest feed size and target discharge size, and we will define the jaw crusher together with you.
Information Needed for a Technical Quotation
- Material type and hardness
- Abrasiveness and moisture
- Largest feed size
- Target discharge size
- Hourly capacity (t/h)
- Stationary or mobile installation