Jaw Crusher Selection Fundamentals
Jaw crushers are core crushing equipment in all mining and aggregate plants, accounting for key investment in primary crushing stage. Choosing a suitable jaw crusher model — feed opening, motor power, crushing cavity structure and discharge adjustment device — directly determines production capacity, liner service life and overall operation expenditure.
Key Selection Parameters
- Raw Ore Characteristics
- Maximum feed size: Decides minimum feed opening width
- Rock compressive strength: Affects frame and toggle plate design
- Abrasiveness: Determines material of jaw plates and side liners
- Moisture and clay content: Influences blockage risk inside crushing chamber
- Ore density: Relates to actual hourly output
- Required Production Capacity
- Design throughput measured in tons per hour (t/h)
- Target particle size of finished discharge material
- Capacity fluctuation range during peak production
- Matching demand of downstream secondary crushing equipment
- Working Site Conditions
- Feeding mode: Fixed hopper feeding or mobile loader direct feeding
- Installation space limitation: Horizontal floor area and height clearance
- Power supply voltage and local power load
- Indoor fixed installation or outdoor mobile matching
- Dust and noise control requirements
Main Jaw Crusher Types
PE Series Standard Jaw Crusher
- Traditional simple structure, low failure rate
- Stable performance for general medium-hard stone
- Convenient manual discharge gap adjustment
- Cost-effective for small and medium crushing lines
European Version PEV Jaw Crusher
- Deep V crushing cavity for higher feeding and crushing efficiency
- Integrated motor base reduces installation space
- Hydraulic shim adjustment for fast discharge size change
- Strong anti-impact capacity for hard granite, basalt
Diesel Mobile Wheeled Jaw Crusher
- Equipped with independent diesel engine, no external power needed
- Wheeled chassis for flexible transfer between sites
- Compact integrated design for mountain and remote mining areas
- Easy disassembly and transportation
Wear Part Matching Selection
Standard Manganese Jaw Plates
- Suitable for limestone, river pebble and low-abrasion rock
- Balanced cost and service life for ordinary quarry projects
High Manganese Reinforced Jaw Plates
- Extra wear resistance for iron ore, hard basalt
- Extend service cycle under long-term heavy crushing load
Alloy Reinforced Toggle Plate
- Serves as safety protection component
- Breaks automatically when uncrushable foreign objects enter chamber
Feed Opening & Discharge Size Matching Rules
The feed opening width must be over 1.2 times the maximum raw stone lump to avoid blockage:
- Max lump ≤ 0.8 times feed width: Stable continuous feeding
- Max lump 0.8–1 times feed width: Equip vibrating feeder for uniform feeding
- Max lump over feed width: Need pre-screening to remove oversized blocks
Discharge gap setting balances finished product yield and liner loss:
Small gap produces finer material but accelerates jaw plate wear;
Large gap lowers abrasion yet increases circulating load for secondary crushing.
Specification Checklist for Quotation
When asking for jaw crusher quotation or technical specification, provide below information:
- Maximum raw stone lump and rock hardness
- Target hourly output and finished aggregate size
- Fixed station or wheeled mobile type
- Power supply condition: electric motor or diesel engine
- Site installation space restriction
- Daily working hours and continuous operation cycle
- Extra demand: dust remover, vibrating feeder matching
WSHT supplies full jaw crushing equipment together with matching feeders, vibrating screens and spare wear parts, offering professional technical consultation for model selection and layout design.
