Jaw Crusher

The Heavy-Duty Primary Crusher for Reducing Large, Hard, and Abrasive Raw Materials

The Jaw Crusher is the foundational machine for primary size reduction in mineral and fertilizer processing plants. It employs two robust, opposing manganese steel jaws—one stationary and one moving in an elliptical motion—to compress and fracture large lumps of hard, abrasive raw material into smaller, manageable pieces. Renowned for its extreme durability and simplicity, it is the essential first step in preparing materials like phosphate rock, granite, and other mined minerals for further processing.

Jaw Crusher

Key Features

  • Robust Jaw Design

    Features a fixed jaw and a movable jaw, both lined with replaceable, wear-resistant manganese steel plates (jaw dies) that are the primary crushing surfaces.

  • Eccentric Shaft & Toggle Mechanism

    A heavy-duty eccentric shaft drives the movable jaw in a compressive, elliptical motion against the fixed jaw, creating tremendous force to break material.

  • Adjustable Discharge Setting

    The size of the crushed product is controlled by adjusting the gap at the discharge point (the closed side setting, CSS), typically via a hydraulic or mechanical shim adjustment system.

  • Heavy-Duty Frame Construction

    Built with a welded or cast steel frame to withstand the immense cyclical stresses generated during the crushing process.

  • Simple & Reliable Operation

    A straightforward mechanical design with minimal moving parts ensures high uptime and predictable maintenance.

Advantages

  • Unmatched Durability for Hard Materials

    Specifically engineered to handle the most abrasive and hardest feed materials with minimal wear-related downtime.

  • High Capacity & Efficiency for Primary Crushing

    Capable of processing large volumes of run-of-mine or quarried material into a consistent, coarse product ideal for secondary crusher feed.

  • Proven Reliability

    The most established primary crushing technology, known for decades of dependable service in the toughest conditions.

  • Low Operating Cost per Ton

    While capital cost may be higher, its longevity, efficiency, and low wear part cost over time make it highly economical for primary crushing duties.

  • Wide Range of Sizes

    Available in various capacities to match any plant feed requirement, from pilot-scale to large mining operations.

Applicable Raw Materials

  • Hard, Abrasive Mined Minerals

    Phosphate rock, granite, basalt, iron ore, and other primary quarry materials

  • Large Lump Fertilizer Feedstock

    Run-of-pile materials requiring initial size reduction before grinding or chemical processing

  • Recycling Very Hard Industrial Materials

    Slags, concrete, and other demolition debris in relevant recycling processes

Basic Structure & Components

Jaw Crusher
Frame

The main structural base, often a single-piece welded steel construction.

Fixed Jaw Die & Cheek Plates

The stationary crushing surface and side liners.

Movable Jaw Die & Assembly

The moving crushing surface, attached to the pitman (moving jaw holder).

Eccentric Shaft

The main shaft that converts rotary motion from the drive into the elliptical crushing motion of the movable jaw.

Toggle Plate

A safety component that transmits crushing force and acts as a mechanical fuse to protect the crusher from damage by uncrushable material (tramp iron).

Flywheels

Heavy wheels mounted on the eccentric shaft to store energy and smooth out the pulsating power demands of the crushing cycle.

Drive System

An electric motor connected via V-belts and sheaves to the eccentric shaft.

Adjustment System

A hydraulic cylinder or mechanical shims to set the discharge opening (CSS)

Lubrication System

An integral oil lubrication system for bearings and the toggle.

Technical Data

Specification Max feeding (mm) Discharging size (mm) Processing ability (t/h) Weight (Except motor) (kg)
PEX150x750A 120 6-8 10-40 3000
PEX150x100A 120 8-10 15-50 6000
PEX250x400 210 20-80 5-20 2700
PEX400x600 350 40-100 17-115 6428
PEX600x900 350 75-200 56-192 17625
PEX250x1000A 210 10-15 10-30 6500

Key Differentiators vs. Other Crushers

A primary crusher designed for very large (up to 1m), hard, and abrasive feed. Operates on compression principle at lower speeds, while hammer and cage crushers are secondary/tertiary impact crushers for smaller, pre-crushed feed and operate at high speeds. Jaw crushers are built for extreme wear resistance, not for producing fine product.

Both are primary crushers. Jaw Crushers are generally preferred for smaller to medium capacity plants, offer simpler maintenance, and handle clayey or wet material better. Gyratory Crushers offer higher capacity for very large-scale mining but are more complex.

These are specialized secondary crushers for specific material types (organics, moist materials, brittle compounds). A Jaw Crusher serves a completely different, earlier stage in the process flow, preparing raw feedstock for these downstream machines.

It is the indispensable, heavy-duty primary crushing solution for fertilizer plants that process mined or quarried hard rock materials. It is the first and most critical step in the size reduction chain, setting the stage for all subsequent processing.