Coarse Crusher
1. Product Overview
1.1 General Description
The coarse crusher is a pre-crushing machine that reduces large lumps of material to smaller sizes (5-50 mm) and is the first step in a crushing production line. It breaks material by compression between the moving and fixed jaw plates and is suitable for materials with a compressive strength of up to 250 MPa. The coarse crusher features a large feed opening, a large crushing ratio, a robust structure and high throughput, providing a suitable feed size for the downstream secondary and fine crushing equipment. It is widely used for coarse crushing in the mining, building material, chemical and metallurgical industries.
1.2 Key Features
- Large feed opening handles large lumps of material
- Large crushing ratio (4-6)
- Robust structure and high throughput
- Adjustable discharge opening controls the output size
- Simple maintenance and low operating cost
- Handles high-hardness materials
- Multiple models for different capacity requirements
- Optional hydraulic adjustment of the discharge opening
1.3 Document Scope
This technical specification covers the design principles, performance parameters, system classification, selection of core components, application fields, design standards and certifications, custom optional configurations, warranty terms, packaging and delivery, and the information required for inquiries of the coarse crusher, serving as a comprehensive reference for procurement selection and engineering communication.
2. Working Principle
2.1 Coarse Crusher Process Flow
Coarse crusher process flow: large lumps enter the crushing chamber → the moving jaw approaches the fixed jaw and compresses → material is crushed → the moving jaw retracts → crushed material falls → compressed again → qualified material is discharged from the outlet. Driven by the eccentric shaft and the toggle plate, the moving jaw swings periodically: when it approaches the fixed jaw, material is crushed by compression; when it moves away, crushed material falls by gravity and is discharged. The discharge opening size is adjusted with shims or hydraulic cylinders to control the output size.
3. System Classification
| Classification | Typical models | Parameter range | Applications | Key features |
|---|
| Small | PE-250, PE-400 | Feed opening 250×400 mm | Small-scale production | Motor power 15-30 kW |
| Medium | PE-600, PE-750 | Feed opening 600×750 mm | Regular production | Motor power 55-90 kW |
| Large | PE-900, PE-1200 | Feed opening 900×1200 mm | Large-scale production | Motor power 110-200 kW |
4. Technical Parameters
4.1 Main Technical Parameters of the Coarse Crusher
| Parameter | PE-250 | PE-400 | PE-600 | PE-750 | PE-900 | PE-1200 |
|---|
| Feed opening size (mm) | 250×400 | 400×600 | 600×750 | 750×1060 | 900×1200 | 1200×1500 |
| Max. feed size (mm) | 210 | 340 | 500 | 630 | 750 | 1020 |
| Discharge opening range (mm) | 20-60 | 40-100 | 80-140 | 80-160 | 100-200 | 150-250 |
| Capacity (t/h) | 5-20 | 15-50 | 50-120 | 80-180 | 120-280 | 250-500 |
| Motor power (kW) | 15 | 30 | 55 | 90 | 110 | 200 |
| Weight (kg) | 2800 | 6500 | 15000 | 28000 | 50000 | 85000 |
4.2 Dimensions and Weight
| Model | Length (mm) | Width (mm) | Height (mm) | Net weight (kg) | Footprint (m²) |
|---|
| PE-250 | 1300 | 1300 | 1400 | 2800 | 1.7 |
| PE-400 | 1700 | 1700 | 1600 | 6500 | 2.9 |
| PE-600 | 2200 | 2200 | 2300 | 15000 | 4.8 |
| PE-750 | 2600 | 2500 | 2800 | 28000 | 6.5 |
| PE-900 | 3000 | 2800 | 3100 | 50000 | 8.4 |
| PE-1200 | 3800 | 3500 | 3800 | 85000 | 13.3 |
5. Applications
| Application field | Typical materials | Special requirements | Representative products |
|---|
| Mining | Iron ore/copper ore/gold ore | First step of coarse crushing | Coarse crushing of iron ore |
| Building materials | Limestone/granite | Aggregate production | Stone aggregate |
| Chemical | Salt/sulphur/soda ash | Coarse crushing of chemical raw materials | Industrial salt |
| Metallurgy | Slag/steel slag | Waste recycling | Coarse crushing of slag |
| Power | Coal | Coal for thermal power plants | Coarse crushing of coal |
6. Core Component Selection
| Component | Function | Material | Selection notes |
|---|
| Moving jaw plate | Crushes material by compression | High-manganese steel | Replace when worn |
| Fixed jaw plate | Cooperates with the moving jaw in crushing | High-manganese steel | Toothed profile enhances crushing |
| Eccentric shaft | Drives the moving jaw to swing | 42CrMo forging | Bearings to be checked regularly |
| Toggle plate | Transmits power and provides overload protection | Cast iron | Breaks to protect the whole machine |
| Flywheel | Stores energy for smooth operation | Cast steel | Static balancing required |
| Adjustment device | Adjusts the discharge opening | Shims/hydraulic cylinders | Hydraulic adjustment is more convenient |
| Bearings | Support the eccentric shaft | Double-row spherical roller | Regular lubrication required |
| Frame | Supports the whole machine | Cast steel/welded | Sufficient rigidity required |
7. Design Standards and Certifications
| Standard/Certification | Scope | Compliance | Certificate/Report |
|---|
| Relevant GB/T standards | Design and manufacture | Fully compliant | Type inspection report |
| GMP (cGMP) | Design, manufacture, documentation | Fully compliant | GMP compliance certificate |
| ISO 9001:2015 | Quality management system | Certified | ISO 9001 certificate |
| CE certification | Machinery safety/EMC | Optional | CE declaration of conformity |
| FDA | Food-grade/pharmaceutical-grade | Optional | FDA compliance documents |
8. Custom Optional Configurations
| No. | Custom item | Options | Default | Impact on delivery |
|---|
| 1 | Jaw plate material | High-manganese steel/alloy steel/ceramics | High-manganese steel | Alloy +2 weeks |
| 2 | Adjustment method | Shims/hydraulic | Shims | Hydraulic +2 weeks |
| 3 | Lubrication | Manual/automatic/centralized | Manual | Automatic +1 week |
| 4 | Motor brand | Domestic/ABB/Siemens | Domestic | Imported +2 weeks |
9. Material Property Requirements
| Material characteristic | Requirement | Remarks |
|---|
| Working temperature | -40~250℃ | Depends on the seals and materials |
| Corrosiveness | Mild to moderate corrosion | 316L or lining required for strong corrosion |
| Explosion protection | Selected according to the site | Zone1/Zone2 different levels |
10. Warranty Terms
| Warranty category | Period | Coverage | Conditions |
|---|
| Main equipment warranty | 12 months | All components included | 12 months from successful commissioning |
| Extended warranty (optional) | 24 months | Same as the standard warranty | Must be purchased with the order |
| Wear parts warranty | 6 months | Seals, bearings, etc. | Normal wear excluded |
11. Packaging and Delivery
| Item | Details |
|---|
| Standard lead time | 6-10 weeks after order confirmation |
| Custom configuration lead time | 10-16 weeks |
| Incoterms | FOB Shanghai / CIF / DAP |
| Packing | Export wooden case |
| Shipping | Container or break-bulk vessel |
12. Information Required for Inquiry
| No. | Information required | Description/Example |
|---|
| 1 | Material name and hardness | Mohs hardness/compressive strength MPa |
| 2 | Max. feed size | mm |
| 3 | Output size | mm |
| 4 | Capacity required | t/h |
| 5 | Moisture content and stickiness | % |
| 6 | Working environment | Indoor/outdoor/altitude |
| 7 | Power supply specification | V/Hz/kW |
| 8 | Installation conditions | Space/load-bearing |