Editorial Technical Reference

Jaw Crusher

This page explains how Jaw Crusher is classified within Non-Metallic Mineral Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A primary crushing machine that reduces large rocks into smaller particles using compressive force between two jaw plates.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Jaw Crusher

Definition
A jaw crusher is a heavy-duty industrial machine designed for primary crushing of hard materials such as rocks, ores, and minerals. It operates by compressing material between a fixed jaw and a moving jaw, creating a V-shaped crushing chamber that progressively reduces particle size through repeated compression cycles. This equipment is fundamental in mining, quarrying, and construction industries for initial size reduction before further processing. The crusher is typically powered by an electric motor driving an eccentric shaft, which imparts an elliptical motion to the movable jaw. Material enters from the top, is crushed between the jaw plates, and exits through the bottom when the gap is wide enough. Key specifications include feed opening sizes ranging from 600×900 mm to 1200×1500 mm, maximum feed sizes from 480 to 1020 mm, discharge settings from 75 to 200 mm, capacities from 50 to 650 t/h, motor power from 75 to 400 kW, and weights from 15 to 120 tons. The eccentric shaft speed ranges from 170 to 330 r/min. Crushing cavity shapes can be curved or straight, affecting product fineness and capacity. Jaw plates are typically made of high manganese alloy steel (e.g., Mn13Cr2–Mn18Cr2) and toggle plates of high manganese steel (ZGMn13–ZGMn18) per GB/T 5680. Lubrication may be grease for bearings and oil for gearbox. Noise levels at 1 m distance are typically 85–95 dB(A) per ISO 3744, and operating temperatures range from -20°C to 40°C. These values are reference ranges; actual specifications must be confirmed with the manufacturer for specific models and applications. Standards listed are for verification purposes and do not imply certification of any particular product.
Working Principle
The jaw crusher operates through an eccentric shaft that drives the movable jaw in an elliptical motion against the fixed jaw. Material enters the crushing chamber through the top opening and is compressed between the two jaw plates as the movable jaw moves toward the fixed jaw. The compressive force fractures the material along natural cleavage lines, with smaller particles exiting through the bottom discharge opening as the jaw retracts. The crushing action is intermittent, with each cycle reducing material until it reaches the desired size to pass through the discharge gap.
Common Materials
High Manganese Steel, Cast Steel, Alloy Steel
Technical Parameters
ParameterTypical rangeNotes & selection driver
Feed Opening SizeRequired600×900–1200×1500 mmWidth of the opening where material enters the crushing chamber
Maximum Feed SizeRequired480–1020 mmLargest particle dimension that can be accepted by the crusher
Discharge SettingRequired75–200 mmMinimum gap between jaw plates at the discharge point
CapacityRequired50–650 t/hMaximum throughput rate under normal operating conditions
Motor PowerRequired75–400 kWPower rating of the electric motor driving the crusher
Weight15–120 kgTotal mass of the complete crusher assembly
Eccentric Shaft Speed170–330 r/minAffects crushing frequency and capacity
Crushing Cavity ShapeCurved–StraightCurved gives finer product, straight higher capacity
Toggle Plate MaterialZGMn13–ZGMn18High manganese steel for wear resistanceGB/T 5680
Jaw Plate MaterialMn13Cr2–Mn18Cr2High manganese alloy steel, work-hardensGB/T 5680
Lubrication MethodGrease–OilGrease for bearings, oil for gearbox
Noise Level85–95 dB(A)At 1 m distance, may require enclosureISO 3744
Operating Temperature-20–40 °COutside range may affect lubrication

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Fixed Jaw Plate Part
    Stationary crushing surface that provides the opposing force against the movable jaw
    Material: High manganese steel with wear-resistant surface
  • Movable Jaw Plate Part
    Oscillating crushing surface that applies compressive force to the material
    Material: High manganese steel with replaceable wear parts
  • Eccentric Shaft
    Rotating shaft that converts rotary motion into the elliptical jaw movement
    Material: Forged alloy steel with precision bearings
  • Toggle Plate Part
    Safety component that breaks under overload conditions to protect the crusher
    Material: Cast steel with designed failure points
  • Flywheel
    Energy storage device that smooths power fluctuations during the crushing cycle
    Material: Cast iron or steel with balanced design
  • Adjustment Wedge Part
    Mechanism for setting the discharge opening size and compensating for wear
    Material: Hardened steel with threaded adjustment
  • Dust Suppression System Optional
    Optional water spray system to control dust emissions during operation
    Material: Stainless steel nozzles and piping

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Jaw Crusher.

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: N/A (mechanical compression only)
other spec: Feed size: Up to 1500mm, Product size: 20-250mm, Capacity: 50-1500 tph
temperature: -20°C to 50°C (operating ambient)
Media Compatibility
✓ Granite ✓ Basalt ✓ Iron Ore
Unsuitable: Highly abrasive silica sand without proper liner protection
Sizing Data Required
  • Maximum feed size (mm)
  • Required throughput (tph)
  • Desired product size (mm)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Fatigue cracking in jaw plates
Cause: Cyclic loading from repeated compression of hard materials, combined with stress concentrations at bolt holes or wear patterns, leading to crack initiation and propagation.
Bearing seizure in eccentric shaft assembly
Cause: Inadequate lubrication, contamination from dust/debris ingress, or misalignment causing overheating, increased friction, and eventual catastrophic bearing failure.
Maintenance Indicators
  • Unusual metallic grinding or knocking sounds during operation, indicating loose components, worn bearings, or broken teeth on jaw plates.
  • Excessive vibration or irregular crusher motion, suggesting imbalance, worn/damaged toggle plates, or foundation issues.
Engineering Tips
  • Implement a proactive lubrication schedule using high-temperature, extreme-pressure grease specifically for crusher bearings, and monitor oil samples for contamination.
  • Regularly inspect and rotate/replace jaw plates before excessive wear occurs to maintain proper nip angle and distribute wear evenly, reducing stress concentrations.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 21873-1:2015 (Mobile crushers - Safety requirements) ANSI/ASME B29.1M (Precision roller chains, attachments, and sprockets)

Quoted from the published standard.

Manufacturing Precision
  • Shaft alignment: +/-0.05mm
  • Jaw plate flatness: 0.2mm per meter
Quality Inspection
  • Ultrasonic Testing (UT) for critical welds and castings
  • Hardness Testing (Rockwell/Brinell) for wear surfaces

Manufacturers of Jaw Crusher

10 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Henan Liming Heavy Industry Science and Technology Co., Ltd.
Zhengzhou, Henan, CN
Founded 1987
ISO 9001:2015 CE CU-TR
Also makes: Cone Crusher
Stated by the company · profile compiled by CNFX from public sources
Hangzhou Chinabase Machinery Co., Ltd.
Hangzhou, Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Jiangsu Right Heavy Machinery Co.,Ltd.
Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
SANY Group
Taiwan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
SBM (Shibang Industry & Technology Group Co., Ltd.)
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Shanghai SANME Mining Machinery Corp., Ltd.
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Shanghai Zenith Heavy Industry Co., Ltd.
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Shenyang North Heavy Metallurgical Engineering Technology Co., Ltd.
Liaoning, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Zhengzhou Hongxing Mining Machinery Co., Ltd.
Henan, CN
Also makes: Cone Crusher
Listed on the company's own website · profile compiled by CNFX from public sources
Zhuzhou Chuangrui Cemented Carbide Co., Ltd.
Hunan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
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Frequently Asked Questions

What is the typical feed opening size range for a jaw crusher?

The feed opening size typically ranges from 600×900 mm to 1200×1500 mm, but this varies by model. Always confirm the exact dimensions with the manufacturer for the specific crusher you are considering.

What materials are commonly used for jaw plates?

Jaw plates are often made of high manganese alloy steel, such as Mn13Cr2 to Mn18Cr2, which work-hardens under impact. The standard GB/T 5680 may be referenced for material specifications, but actual grades should be verified with the supplier.

How does the crushing cavity shape affect performance?

A curved crushing cavity typically produces a finer product, while a straight cavity offers higher capacity. The choice depends on the desired output and application requirements.

What are the typical noise levels and operating temperatures?

Noise levels at 1 meter distance are usually 85–95 dB(A) per ISO 3744, and operating temperatures range from -20°C to 40°C. These are reference values; actual conditions may vary, and enclosures may be needed for noise control.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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