Editorial Technical Reference

Crawler Crane

This page explains how Crawler Crane is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A mobile crane mounted on a crawler undercarriage for heavy lifting operations with excellent stability and mobility on rough terrain.

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

Product Specifications

Technical details and manufacturing context for Crawler Crane

Definition
A crawler crane is a heavy-duty lifting machine equipped with a rotating superstructure mounted on a crawler track undercarriage. It features a lattice boom or telescopic boom system with hoisting mechanisms, designed for lifting and moving extremely heavy loads in construction, infrastructure, and industrial applications. Unlike wheeled cranes, crawler cranes provide superior stability and ground pressure distribution, allowing operation on soft, uneven, or unprepared surfaces without requiring outriggers for most configurations. The machine's mobility is provided by its crawler tracks, which are driven by hydraulic motors powered by a diesel engine. The operator controls the crane from a cab, using levers and joysticks to manipulate the boom's elevation and rotation via hydraulic cylinders and a slewing ring. Loads are lifted using wire ropes wound around drums, with multiple sheaves providing mechanical advantage. The crawler tracks distribute the machine's weight over a large surface area, providing stability during lifting without the need for outriggers in most configurations. This type of crane is commonly used in large-scale construction projects, bridge building, wind turbine installation, and other heavy lifting tasks where mobility on rough terrain and high lifting capacity are required. The machine's specifications, such as maximum lifting capacity, boom length, and engine power, vary widely depending on the model and manufacturer. For any specific application, it is essential to verify the actual performance parameters and compliance with relevant standards with the legal manufacturer or supplier. The directory lists typical ranges for reference only and does not guarantee that any particular model meets these values. Always consult the manufacturer's documentation and applicable regulations before use.
Working Principle
The crawler crane operates through a combination of mechanical and hydraulic systems. The diesel engine powers hydraulic pumps that drive the crawler tracks for mobility and the winch systems for lifting operations. The operator controls the machine from a cab, using levers and joysticks to manipulate the boom's elevation and rotation via hydraulic cylinders and a slewing ring. Loads are lifted using wire ropes wound around drums, with multiple sheaves providing mechanical advantage. The crawler tracks distribute the machine's weight over a large surface area, providing stability during lifting without the need for outriggers in most configurations.
Common Materials
High-strength steel, Alloy steel, Rubber, Hydraulic fluid
Technical Parameters
ParameterTypical rangeNotes & selection driver
Maximum Lifting CapacityRequired50–1600 metric tonsThe heaviest load the crane can lift at minimum radius under optimal conditionsISO 4305
Maximum Boom LengthRequired30–120 metersFully extended length of the main boom without jib attachment
Maximum Hook HeightRequired50–150 metersMaximum vertical reach of the hook from ground level
Engine PowerRequired100–500 kilowattsPower output of the diesel engine that drives hydraulic systemsISO 3046-1
Travel SpeedRequired0.5–3.0 km/hMaximum speed when moving on crawler tracks without load
Ground PressureRequired0.05–0.15 kPaPressure exerted on the ground surface by crawler tracks
Operating Pressure25–35 MPaHydraulic system pressure.
Operating Temperature Range-20–50 °CAmbient temperature for operation.
IP RatingIP54–IP65For electrical enclosures.IEC 60529
Total Weight50–2000 tIncluding counterweight.
Track Width500–1500 mmAffects ground pressure.
Max Grade Ability20–40 %Gradient capability.

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
  • Crawler Undercarriage
    Provides mobility and stability by distributing weight over large surface area with track system
    Material: High-strength steel with rubber track pads
  • Main Boom
    Primary structural member that provides reach and elevation for lifting operations
    Material: High-strength alloy steel lattice or telescopic sections
  • Hoist Winch
    Mechanism for raising and lowering loads using wire rope wound around a drum
    Material: Steel drum with alloy steel gears and hydraulic motor
  • Slewing Ring
    Large bearing that allows 360-degree rotation of the superstructure
    Material: Alloy steel with hardened raceways and ball bearings
  • Counterweight Part
    Adjustable weight system that balances the crane during lifting operations
    Material: Cast iron or concrete blocks
  • Operator Cab
    Enclosed control station with instrumentation and controls for crane operation
    Material: Steel frame with safety glass and climate control
  • Jib Extension Optional
    Optional lattice extension that increases reach beyond main boom length
    Material: High-strength alloy steel lattice structure

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Crawler Crane.

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: N/A (mechanical system)
other spec: Max ground pressure: 0.5-1.5 kg/cm², Max slope: 30%, Max wind speed: 20 m/s for operation
temperature: -20°C to +50°C
Media Compatibility
✓ Construction materials (steel beams, concrete segments) ✓ Heavy machinery components ✓ Industrial plant equipment
Unsuitable: Underwater or submerged environments
Sizing Data Required
  • Maximum lifting capacity (tons)
  • Maximum boom length (meters)
  • Required ground bearing capacity (kg/cm²)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Track link pin and bushing wear
Cause: Abrasive wear from soil, sand, and debris ingress combined with inadequate lubrication, leading to increased track chain elongation and misalignment.
Hydraulic system component failure (e.g., pump, cylinder seals)
Cause: Contamination of hydraulic fluid by particulates or moisture, causing abrasive wear, internal leakage, and seal degradation, often due to poor filtration maintenance or environmental exposure.
Maintenance Indicators
  • Unusual metallic grinding or knocking sounds from the undercarriage during operation, indicating severe track component wear or failure.
  • Hydraulic oil leaks at cylinder rods or hose connections, accompanied by a drop in system pressure or erratic boom/hoist movement.
Engineering Tips
  • Implement a strict, condition-based lubrication schedule for the track chain and rollers using high-viscosity, extreme-pressure grease, and regularly clean debris from the undercarriage to prevent abrasive ingress.
  • Install and maintain high-efficiency hydraulic filtration systems with moisture removal capabilities, and perform regular oil analysis to monitor contamination levels and fluid integrity.

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 4309:2017 - Cranes - Wire ropes - Care, maintenance, installation, examination and discard ANSI/ASME B30.5 - Mobile and Locomotive Cranes DIN EN 13000 - Cranes - Mobile cranes

Quoted from the published standard.

Manufacturing Precision
  • Boom section alignment: +/-0.5mm per meter
  • Track shoe flatness: 0.3mm over 1m length
Quality Inspection
  • Non-Destructive Testing (NDT) - Magnetic Particle Inspection for critical welds
  • Load Testing - 125% rated capacity static test

Manufacturers of Crawler Crane

4 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.

CNS Machinery (Xuzhou) Co., Ltd.
Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Henan Seven Industry
Henan, CN
Also makes: Overhead Crane, Gantry Crane, Portal Crane and 5 more
Listed on the company's own website · profile compiled by CNFX from public sources
Quanzhou Bole Automation Engineering Co., Ltd.
Fujian, 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

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
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Manufacturing capability
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Inspection readiness
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Supplier transparency
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Frequently Asked Questions

What is the typical maximum lifting capacity of a crawler crane?

According to the directory, the maximum lifting capacity ranges from 50 to 1600 metric tons, depending on the model and configuration. This value is measured at minimum radius under optimal conditions and should be verified with the manufacturer for a specific crane.

Can a crawler crane operate on soft or uneven ground without outriggers?

Yes, crawler cranes are designed to operate on soft, uneven, or unprepared surfaces due to their crawler tracks, which distribute the machine's weight over a large area. However, the actual ground pressure and stability must be checked against the manufacturer's specifications for the specific model and site conditions.

What are the main components of a crawler crane?

The main components include the crawler undercarriage, rotating superstructure, boom (lattice or telescopic), hoisting mechanisms (winches and wire ropes), hydraulic system, diesel engine, and operator cab. The boom's elevation and rotation are controlled via hydraulic cylinders and a slewing ring.

How do I verify the compliance of a crawler crane with standards?

The directory lists standards such as ISO 4305 for lifting capacity, ISO 3046-1 for engine power, and IEC 60529 for IP ratings. These are reference standards for procurement and verification. To confirm compliance, you must consult the legal manufacturer or supplier and review the machine's documentation and certificates.

Data Basis

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

Preliminary Technical Classification
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