Editorial Technical Reference

Carrier/Undercarriage

This page explains how Carrier/Undercarriage is classified within Other Transport Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Mobile base structure providing stability and mobility for wind turbine installation cranes

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

Product Specifications

Technical details and manufacturing context for Carrier/Undercarriage

Definition
The carrier/undercarriage is the foundational mobile platform of a wind turbine installation crane, designed to support the crane's superstructure while enabling transportation and positioning on various terrains. It typically includes crawler tracks or wheels, power transmission systems, and structural frames that distribute the crane's weight and provide stability during lifting operations. The undercarriage transfers the crane's load to the ground through crawler tracks or wheels, with hydraulic or mechanical systems enabling movement and steering. It incorporates outriggers or stabilizers that extend to create a wider base during lifting operations, preventing tipping and ensuring safe load handling. Constructed from high-strength steel, alloy steel, and wear-resistant steel plates, the undercarriage is engineered to withstand heavy loads and harsh operating conditions. Key parameters include rated lifting capacity (100–200 t), maximum lifting moment (2500–5000 t·m), track gauge (6–10 m), base length (10–15 m), base width (8–12 m), ground bearing pressure (0.1–0.3 MPa), max travel speed (0.5–1.5 km/h), gradeability (2–5%), operating temperature (-20 to 50 °C), power supply voltage (380–690 V AC), total weight (150–300 t), and track width (1.0–1.5 m). These values are reference ranges and must be verified for the specific model and application. The undercarriage complies with relevant standards such as ISO 4301-1 for lifting capacity and moment, and IEC 60038 for voltage. It is essential to confirm that the ground bearing pressure does not exceed the soil bearing capacity at the installation site. The undercarriage is a critical component for safe and efficient wind turbine installation, and its selection should be based on the crane's load requirements, terrain conditions, and operational environment. Always consult the legal manufacturer or supplier for model-specific specifications and compliance.
Working Principle
The undercarriage transfers the crane's load to the ground through crawler tracks or wheels, with hydraulic or mechanical systems enabling movement and steering. It incorporates outriggers or stabilizers that extend to create a wider base during lifting operations, preventing tipping and ensuring safe load handling. The structural frame distributes the weight evenly, and the ground bearing pressure is kept within safe limits to avoid soil failure.
Common Materials
High-strength steel, Alloy steel, Wear-resistant steel plates
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Lifting Capacity100–200 tMaximum load at minimum radiusISO 4301-1
Maximum Lifting Moment2500–5000 t·mProduct of load and radiusISO 4301-1
Track Gauge6–10 mDistance between track centers
Base Length10–15 mOverall length of undercarriage
Base Width8–12 mOverall width of undercarriage
Ground Bearing Pressure0.1–0.3 MPaMust not exceed soil bearing capacity
Max Travel Speed0.5–1.5 km/hSelf-propelled on level ground
Gradeability2–5 %Maximum slope for travel
Operating Temperature-20–50 °CExtended range available on request
Power Supply Voltage380–690 V ACThree-phase, 50/60 HzIEC 60038
Total Weight150–300 tIncluding undercarriage only
Track Width1.0–1.5 mAffects ground pressure

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 Tracks
    Provide traction and distribute weight over large surface area
    Material: Steel with rubber pads
  • Track Frame
    Structural support for crawler assembly and load distribution
    Material: High-strength steel
  • Drive Sprockets
    Engage with track links to propel the undercarriage
    Material: Alloy steel
  • Idler Wheels Part
    Guide and support the crawler track
    Material: Steel with hardened surfaces
  • Outriggers/Stabilizers
    Extend to increase base width and provide stability during lifting
    Material: Steel with hydraulic components
  • Wheels Optional
    Travel gear on wheeled carriers instead of crawler tracks.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Carrier/Undercarriage.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: N/A (structural load-bearing component)
other spec: Ground pressure: 5-15 psi, Max slope: 5° operational / 10° transport, Wind resistance: 20 m/s operational / 30 m/s parked
temperature: -20°C to +40°C (operational), -30°C to +50°C (storage)
Media Compatibility
✓ Firm compacted soils ✓ Graded construction sites ✓ Stabilized gravel pads
Unsuitable: Unprepared soft/marshy terrain without ground reinforcement
Sizing Data Required
  • Maximum crane load capacity (tons)
  • Required ground bearing pressure (psi/bar)
  • Site terrain conditions and slope requirements (°)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Track link pin and bushing wear
Cause: Abrasive soil ingress and inadequate lubrication leading to accelerated metal-on-metal contact and clearance increase
Roller and idler bearing failure
Cause: Contamination from dirt/debris penetration through worn seals, combined with improper track tension causing excessive radial loads
Maintenance Indicators
  • Excessive track sag (more than 2 inches between top of track and carrier frame when measured at mid-span)
  • Audible metallic grinding or clicking noises during operation, especially when turning
Engineering Tips
  • Implement regular track tension adjustments according to manufacturer specifications using proper measurement tools - avoid overtightening which accelerates component wear
  • Establish aggressive contamination control through daily track cleaning and scheduled undercarriage washdowns, combined with frequent lubrication of pins/bushings per operating hours

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 286-2:2010 (Limits and fits) ANSI/ASME B18.2.1 (Square and Hex Bolts and Screws) DIN 15061-1 (Components for cranes - Underframes)

Quoted from the published standard.

Manufacturing Precision
  • Bore diameter: +/-0.025mm
  • Surface flatness: 0.15mm per meter
Quality Inspection
  • Magnetic Particle Inspection (MPI)
  • Hardness Testing (Rockwell C scale)

Manufacturers of Carrier/Undercarriage

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

Quanzhou Tesunho Electronics Co., Ltd.
Quanzhou, Fujian, CN
Founded 201515,000pcs Analog / month or 6000pcs PoC / month staffNo.605 BLDG 1, 269 Tiyu Str. FZ, QZ 362000, CN
Also makes: Two-Way Radio, Power Amplifier, Smartphones and 1 more
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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Inspection readiness
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Frequently Asked Questions

What is the primary function of the carrier/undercarriage?

The carrier/undercarriage provides a mobile base for the crane, supporting the superstructure and enabling movement and positioning on site. It also ensures stability during lifting by distributing the load and using outriggers or stabilizers.

What materials are typically used in the construction?

Common materials include high-strength steel, alloy steel, and wear-resistant steel plates. These materials are selected for their strength and durability under heavy loads and harsh conditions.

How is the ground bearing pressure managed?

The undercarriage is designed to distribute the crane's weight over a large area through tracks or wheels, and the ground bearing pressure is kept within the specified range (0.1–0.3 MPa) to prevent soil failure. It is crucial to verify that the site's soil bearing capacity is not exceeded.

What standards apply to the carrier/undercarriage?

Relevant standards include ISO 4301-1 for rated lifting capacity and maximum lifting moment, and IEC 60038 for power supply voltage. However, compliance must be confirmed with the manufacturer for the specific model.

Data Basis

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

Preliminary Technical Classification
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