I. Model Meaning

PE250×400:

• PE: Abbreviation of Jaw Crusher, the general code for jaw crusher series.

• 250×400: The width × length of the feed opening is 250 mm × 400 mm, commonly known as "2540 Jaw Crusher" in the industry, a compact small-sized jaw crusher.

II. Main Technical Parameters (Standard Configuration)

• Feed Opening Size: 250×400 mm

• Maximum Feed Size: ≤210 mm

• Discharge Opening Adjustment Range: 20–80 mm (adjustable via shim plates)

• Production Capacity: 5–20 t/h (varies with discharge opening size and material hardness)

• Motor Power: 15–30 kW (customizable, electric or diesel options)

• Eccentric Shaft Speed: 300 r/min

• Equipment Weight: Approximately 2.8 t

• Overall Dimensions (Length × Width × Height): Approximately 1300×1090×1270 mm

III. Structural Composition

Main Components (compact and durable design):

1. Frame: Reinforced cast steel frame, reducing vibration and extending the machine's service life, capable of withstanding impact during crushing.

2. Moving Jaw / Fixed Jaw: Jaw plates made of high manganese steel (13Mn), featuring excellent wear resistance, replaceable and reusable to extend service intervals.

3. Eccentric Shaft: Made of high-strength 40Cr material, drives the moving jaw to swing back and forth, strengthened by heat treatment for better toughness and wear resistance.

4. Toggle Plate (Thrust Plate): Transmits power to the moving jaw and serves as a safety part — it will break first when overloaded to protect the main machine from damage.

5. Flywheel / Pulley: Stores rotational energy, stabilizes equipment operation, and reduces the impact of load fluctuations.

6. Adjustment Mechanism: Gasket-type adjustment, easy to operate, allowing quick adjustment of discharge opening size according to production needs.

7. Lubrication System: Centralized lubrication design, ensuring reliable operation of bearings and bushings, reducing friction and wear, and extending component service life.

IV. Working Principle

The motor drives the eccentric shaft to rotate through the V-belt → the moving jaw makes periodic reciprocating swings → when the moving jaw approaches the fixed jaw, materials are crushed by extrusion and splitting; when the moving jaw moves away, crushed materials fall and are discharged by their own weight, realizing continuous cyclic crushing.

V. Performance Characteristics

1. Compact Design, Heavy-Duty Performance: Small footprint, suitable for tight spaces, mobile setups or temporary job sites where larger crushers can’t fit, while delivering reliable crushing performance.

2. Large Crushing Ratio & Uniform Particle Shape: Crushes materials with compressive strength ≤ 320 MPa, resulting in uniform aggregates, high cubic particle content, meeting subsequent processing needs.

3. Simple, Reliable & Easy to Maintain: Simple structure, low failure rate, easy access to critical parts for quick replacement of wearing parts, reducing downtime.

4. Energy-Saving & Cost-Effective: Optimized crushing motion minimizes energy waste, smaller motor reduces energy bills, suitable for budget-conscious small to mid-sized operations.

5. Adjustable Discharge Range: 20–80 mm discharge opening, adaptable to different process requirements and various application scenarios.

VI. Application Scope

• Materials: Ores and materials with compressive strength ≤ 320 MPa, such as granite, limestone, basalt, river pebbles, iron ore, construction waste, concrete rubble, asphalt, etc..

• Scenarios: Small quarries, construction sites, recycling centers, mobile crushing projects, as well as metallurgy, chemical, building materials, highway/railway subgrade construction, etc..

• Production Line Position: Commonly used as primary crushing for small-scale operations; can be paired with screens, conveyors or hammer crushers to form a customized crushing line.

VII. Installation and Use Points

1. Foundation: The concrete base must be level and firm, with reserved anchor bolt holes to ensure stability during equipment operation.

2. Feeding: Feed materials evenly, avoid metal hard objects entering the crushing cavity, and strictly prohibit feeding materials exceeding the maximum feed size (≤210 mm).

3. Startup Sequence: Start the machine with no load first → feed materials after normal operation; when shutting down, stop feeding first → shut down after the materials in the cavity are completely emptied.

4. Maintenance: Regularly check jaw plate wear, bolt tightness, and bearing temperature (≤70℃); supplement lubricating grease in a timely manner; replace wearing parts periodically to ensure long-term stable operation.

VIII. Common Configuration Reference

• Single Machine: 15–30 kW motor (electric/diesel) + high manganese steel jaw plate + manual gasket adjustment seat

• Production Line: Vibrating Feeder → PE250×400 Jaw Crusher → Conveyor Belt → Vibrating Screen → Hammer Crusher (optional)