Industry-Verified Manufacturing Data (2026)

Trolley

Based on aggregated insights from multiple verified 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
    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
Engineering Reasoning
0.5-2.5 m/s travel speed, 0-100 kN load capacity, -40°C to +60°C ambient temperature
Wheel bearing temperature exceeds 120°C, rail deflection exceeds 5 mm/m, motor current exceeds 150% rated for 30 seconds
Design Rationale: Wheel-rail contact fatigue (Hertzian stress > 1500 MPa), bearing lubricant thermal breakdown at 120°C, motor insulation class F thermal degradation at 155°C
Risk Mitigation (FMEA)
Trigger Rail joint misalignment exceeding 2 mm vertical gap
Mode: Wheel impact loading > 3g acceleration causing bearing brinelling
Strategy: Continuous welded rail with laser-aligned joints, tapered wheel profiles with 1:20 conicity
Trigger Brake coil insulation breakdown at 155°C thermal class limit
Mode: Electromagnetic brake fails to engage during emergency stop
Strategy: Class H insulation (180°C rating), redundant spring-applied brakes with independent power supplies

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
View system integration details
Gantry Crane
View system integration details
Portal Crane
View system integration details
Overhead Crane
View system integration details
Bridge Crane
View system integration details
Jib Crane
View system integration details
Container Crane
View system integration details
Ship-to-Shore Crane
View system integration details

Industrial Ecosystem & Supply Chain DNA

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

Verified manufacturers with capability to produce this product in China

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✓ 95% Supplier Capability Match Found

S Sourcing Manager from Brazil Feb 13, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
P Procurement Specialist from Canada Feb 10, 2026
★★★★☆
"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Trolley meets all ISO standards. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from United States Feb 07, 2026
★★★★★
"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Trolley arrived with full certification."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

12 sourcing managers are analyzing this specification now. Last inquiry for Trolley from Vietnam (57m ago).

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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 Specifications verified by CNFX Industrial Index (v2.6.03) for Machinery and Equipment Manufacturing sector.

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