Primary Jaw Crusher
A primary jaw crusher is one of the most common first-stage crushers in quarry, mining and aggregate production. It is designed to accept relatively large feed and reduce it through compression.
How Does a Jaw Crusher Work?
The crushing chamber contains a fixed jaw and a moving jaw. An eccentric drive moves the movable jaw toward and away from the fixed jaw, compressing the material until it becomes small enough to pass toward the discharge opening.
V-Shaped Crushing Chamber
The upper part of the chamber is wider to receive large feed, while the narrowing geometry toward the discharge supports progressive size reduction.
Jaw Plates and Wear Material
Jaw plates are replaceable wear components. Manganese-alloy steels are commonly used for jaw plates because the material is intended to withstand impact and abrasion; the exact alloy and profile should be selected for the crusher model and rock characteristics.
Applications
- Basalt and granite
- Limestone and quarry stone
- Mining feed
- Aggregate production
- Construction and demolition recycling where appropriate
Main Selection Criteria
Feed size, jaw opening, rock hardness, abrasiveness, target capacity and downstream process should be considered together. Actual capacity is model- and application-dependent.
