I. Model Meaning

PE500×750:

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

• 500×750: The width × length of the feed opening is 500 mm × 750 mm, commonly known as "57 Jaw Crusher" in the industry, a high-performance medium-sized jaw crusher.

II. Main Technical Parameters (Standard Configuration)

• Feed Opening Size: 500×750 mm

• Maximum Feed Size: ≤425 mm

• Discharge Opening Adjustment Range: 50–100 mm (adjustable via shim plates or wedge adjustment)

• Production Capacity: 40–110 t/h (varies with discharge opening size and material hardness)

• Motor Power: 45 kW (6-pole, electric, customizable diesel option)

• Eccentric Shaft Speed: 250 r/min

• Equipment Weight: Approximately 18 t

• Overall Dimensions (Length × Width × Height): Approximately 2200×1800×2100 mm

III. Structural Composition

Main Components (stable, durable and high-efficiency design):

1. Frame: Integral cast steel or welded frame, thickened plate structure, strong bearing capacity, effectively absorbing vibration and ensuring stable operation under long-term heavy load.

2. Moving Jaw / Fixed Jaw: Jaw plates made of high manganese steel (Mn13Cr2), with high wear resistance and impact resistance, replaceable and reversible, greatly extending the service life and reducing replacement costs.

3. Eccentric Shaft: Made of high-strength alloy steel (40Cr),经过 precision machining and heat treatment, featuring high toughness and wear resistance, which stably drives the moving jaw to swing and ensures efficient crushing.

4. Toggle Plate (Thrust Plate): Transmits power to the moving jaw and serves as a safety part — it will break first when overloaded (such as hard foreign objects entering the cavity), effectively protecting the main machine from damage.

5. Flywheel / Pulley: Large-diameter flywheel, which stores sufficient rotational energy, balances the load of the equipment, stabilizes the operation speed, and reduces the impact of load fluctuations on the motor.

6. Adjustment Mechanism: Gasket-type or wedge-type adjustment, simple and convenient operation, can quickly adjust the discharge opening size according to different production needs, with high adjustment accuracy and good stability.

7. Lubrication System: Centralized forced lubrication system, equipped with oil pump, oil filter and oil cooler, ensuring continuous and reliable lubrication of bearings and bushings, preventing overheating and wear, and extending the service life of components.

IV. Working Principle

The motor drives the eccentric shaft to rotate through the V-belt → the moving jaw makes periodic reciprocating swings through the crank-rocker mechanism → when the moving jaw approaches the fixed jaw, the material is crushed by extrusion, splitting and bending; when the moving jaw moves away from the fixed jaw, the crushed material falls and is discharged by its own weight, realizing continuous cyclic crushing and efficient material processing.

V. Performance Characteristics

1. Stable Structure, High Reliability: The thickened frame and high-strength core components ensure the equipment can operate continuously for a long time in harsh working environments such as mines and quarries, with low failure rate and strong adaptability.

2. High Crushing Efficiency & Large Output: The optimized deep cavity design of the crushing chamber increases the feeding capacity, the crushing ratio is up to 6-10, and the production capacity reaches 40-110t/h, which can meet the medium-scale production needs.

3. Uniform Particle Shape, High Quality: The optimized curve design of the jaw plate makes the material crushing more uniform, the content of cubic particles in the finished product is high, no excessive crushing, and it can directly meet the requirements of construction and building materials.

4. Easy Maintenance, Low Operating Cost: The structure is simple, the wearing parts (jaw plates, toggle plates) are easy to access and replace, the maintenance cycle is long, and the downtime and operating cost are effectively reduced.

5. Wide Adaptability: The discharge opening can be adjusted between 50-100mm, which is suitable for crushing various hard materials with compressive strength ≤ 320MPa, and can adapt to different process requirements of primary crushing.

VI. Application Scope

• Materials: Ores and materials with compressive strength ≤ 320 MPa, such as granite, limestone, basalt, river pebbles, iron ore, lead-zinc ore, construction waste, quartz stone, dolomite, etc.

• Scenarios: Medium-sized quarries, open-pit mines, concentrators, building materials factories, highway/railway construction projects, concrete mixing stations, solid waste treatment plants, metallurgy and chemical industries, etc.

• Production Line Position: Commonly used as primary crushing equipment in medium-scale crushing production lines; it can be matched with impact crushers, cone crushers, vibrating screens and conveyors to form a complete crushing and screening production line, realizing multi-stage crushing of materials.

VII. Installation and Use Points

1. Foundation: The concrete base must be designed according to the equipment weight and vibration parameters, ensuring levelness and firmness, and reserved anchor bolt holes to prevent the equipment from shaking during high-load operation.

2. Feeding: Use a vibrating feeder for uniform feeding, strictly prohibit metal hard objects (steel bars, iron blocks) from entering the crushing cavity, and do not feed materials exceeding the maximum feed size (≤425 mm) to avoid damaging the equipment.

3. Startup Sequence: Start the lubrication system first, check that the lubrication is normal → start the main machine with no load, and confirm that the operation is stable before feeding; when shutting down, stop feeding first, wait for the materials in the cavity to be completely emptied, then shut down the main machine, and finally stop the lubrication system.

4. Maintenance: Regularly check the wear of jaw plates, toggle plates and bearings; check the tightness of all bolts and the oil level, oil quality of the lubrication system; clean the equipment regularly, and replace wearing parts in time to ensure long-term stable operation of the equipment.

VIII. Common Configuration Reference

• Single Machine: 45 kW electric motor + high manganese steel jaw plate + gasket/wedge adjustment seat + centralized forced lubrication system

• Production Line: Vibrating Feeder → PE500×750 Jaw Crusher → Conveyor Belt → Impact Crusher/Cone Crusher → Vibrating Screen → Finished Product Silo