Structured Manufacturing Data (2026)

Trolley

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Trolley used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Trolley is characterized by the integration of Trolley Frame and Drive Wheels. In industrial production environments, manufacturers listed on CNFX commonly emphasize High-strength steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A movable carriage that travels along the horizontal jib of a tower crane to position loads.

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Product Specifications

Technical details and manufacturing context for Trolley

Definition
The trolley is a critical component of a tower crane's horizontal movement system. It consists of a carriage assembly equipped with wheels or rollers that move along rails on the crane's jib. The trolley carries the hoisting mechanism (hook block, wire rope, and sometimes the hoist motor) and enables precise horizontal positioning of loads across the crane's working radius. Its movement is controlled by a separate trolley drive system, typically using electric motors and gearboxes.
Working Principle
The trolley is driven by an electric motor connected to a gearbox and drive wheels. The motor receives signals from the crane operator's controls, causing the drive wheels to rotate and move the trolley along the jib rails. Braking systems (mechanical or electrical) are used to stop and hold the trolley at the desired position. Some systems use rack-and-pinion drives, while others use friction drives with rubber-tired wheels.
Common Materials
High-strength steel, Alloy steel
Technical Parameters
  • Trolley wheelbase (distance between wheel centers) (mm) Standard Spec
Components / BOM
  • Trolley Frame
    Main structural support that houses all other trolley components
    Material: High-strength steel
  • Drive Wheels
    Powered wheels that provide motion along the jib rails
    Material: Alloy steel with rubber treads
  • Guide Wheels Part
    Non-powered wheels that keep trolley aligned on rails
    Material: Alloy steel
  • Trolley Drive Motor
    Electric motor that provides power for trolley movement
    Material: Copper, steel, aluminum
  • Gearbox
    Reduces motor speed and increases torque for trolley movement
    Material: Cast iron, steel gears
  • Brake System
    Mechanical or electrical system to stop and hold trolley position
    Material: Steel, friction materials
  • Trolley Hook Block
    Attachment point for hoist ropes and load hook
    Material: Forged steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Trolley.

Trolley Carriage Crane Trolley Jib Trolley tower crane trolley carriage industrial crane trolley system high-strength steel trolley frame trolley drive motor gearbox trolley hook block assembly

Applied To / Applications

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

Tower Crane
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Gantry Crane
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Portal Crane
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Overhead Crane
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Bridge Crane
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Jib Crane
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Container Crane
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Ship-to-Shore Crane
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Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: N/A (mechanical system, not pressure-based)
other spec: Max load capacity: 5-25 tons (typical), Travel speed: 0-30 m/min, Wind resistance: Up to 20 m/s operational
temperature: -20°C to +50°C (standard operating range)
Media Compatibility
✓ Construction materials (steel beams, concrete panels) ✓ Modular building components ✓ Industrial equipment modules
Unsuitable: Corrosive chemical environments without protective coatings
Sizing Data Required
  • Maximum load weight (tons)
  • Required travel distance along jib (meters)
  • Operating duty cycle (hours/day, lifts/hour)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Wheel bearing seizure
Cause: Lack of lubrication leading to metal-on-metal contact, overheating, and eventual binding due to contamination ingress or improper maintenance intervals.
Structural weld fatigue cracking
Cause: Cyclic loading from repeated heavy loads or impacts causing stress concentration at weld joints, exacerbated by poor weld quality or design.
Maintenance Indicators
  • Audible grinding or squealing from wheels during movement
  • Visible wobble or misalignment of the trolley frame during use
Engineering Tips
  • Implement a scheduled lubrication program for wheel bearings using manufacturer-recommended grease, and regularly clean debris from wheel tracks.
  • Conduct periodic non-destructive testing (e.g., visual or dye penetrant inspection) on critical welds and reinforce high-stress areas with gussets if needed.

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality management systems ANSI/ASME B30.2 - Overhead and Gantry Cranes DIN 15155 - Hand-operated industrial trucks
Manufacturing Precision
  • Wheel alignment: +/- 1.5 mm
  • Load capacity deviation: +/- 5% of rated capacity
Quality Inspection
  • Load test to 125% of rated capacity
  • Non-destructive testing of welds (visual and ultrasonic)

Factories Producing Trolley

Manufacturer profiles with relevant production capability in China

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

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What materials are used in manufacturing tower crane trolleys?

Our trolleys are constructed from high-strength steel and alloy steel for maximum durability and load-bearing capacity in demanding industrial environments.

How does the trolley positioning system work on tower cranes?

The trolley travels along the horizontal jib using drive wheels powered by a motor and gearbox system, with guide wheels ensuring smooth movement and precise load placement.

What safety features are included in the trolley system?

Each trolley includes a comprehensive brake system, reinforced frame construction, and secure hook block assembly to ensure safe operation during material handling.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Machinery and Equipment Manufacturing.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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