Structured Manufacturing Data (2026)

Telescopic Boom

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Telescopic Boom 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 Telescopic Boom is characterized by the integration of Boom Sections and Hydraulic Cylinders. 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 multi-section hydraulic boom that extends and retracts to adjust the crane's reach and lifting height.

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Product Specifications

Technical details and manufacturing context for Telescopic Boom

Definition

The telescopic boom is the primary load-bearing and positioning component of a rough terrain crane, consisting of multiple nested steel sections that slide within each other via hydraulic cylinders. It enables the crane to extend its reach horizontally and vertically while maintaining structural integrity under heavy loads in challenging off-road environments.

Working Principle

Hydraulic cylinders push and pull the nested boom sections, allowing controlled extension and retraction. The boom sections are typically rectangular or trapezoidal in cross-section for optimal strength-to-weight ratio, with locking mechanisms that secure sections at desired lengths.

Common Materials

High-strength steel, Alloy steel

Technical Parameters

Maximum extended length of the boom (mm) Standard Spec

Components / BOM

Boom Sections
Nested structural members that extend and retract

Material: High-strength steel
Hydraulic Cylinders
Provide force to extend and retract boom sections

Material: Steel with chrome-plated rods
Pins and Locks Part
Secure boom sections at desired extension lengths

Material: Alloy steel
Sheaves and Pulleys
Guide and support hoist cables along the boom

Material: Steel or composite materials

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Telescopic Boom.

Applied To / Applications

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

Rough Terrain Crane

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All-Terrain Crane

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Mobile Crane

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Telescopic Crane

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Reach Stacker

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Container Handler

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Industrial Ecosystem & Supply Chain Structure

Complementary Systems

Downstream Applications

Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits

pressure:	Max 350 bar (system pressure)
flow rate:	30-120 L/min (hydraulic flow)
temperature:	-20°C to +60°C
slurry concentration:	Not applicable (hydraulic fluid only)

Media Compatibility

✓ Hydraulic oil (ISO VG 46) ✓ Synthetic hydraulic fluid ✓ Biodegradable hydraulic fluid

Unsuitable: Saltwater/marine environments without corrosion protection

Sizing Data Required

Maximum lifting capacity (tons)
Required working radius (meters)
Maximum boom extension length (meters)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause

Hydraulic cylinder seal failure

Cause: Contamination of hydraulic fluid with particulate matter leading to abrasive wear, or chemical degradation from incompatible fluids or excessive heat causing seal hardening and cracking.

Structural fatigue cracking in boom sections

Cause: Cyclic loading from repeated extension/retraction cycles combined with stress concentrations at weld joints or pin connections, often accelerated by overloading or improper operation.

Maintenance Indicators

Audible hydraulic fluid leakage or hissing during operation indicating seal failure or cylinder damage
Visible misalignment or uneven extension of boom sections suggesting worn bushings, bent pins, or structural deformation

Engineering Tips

Implement strict hydraulic fluid cleanliness protocols with regular filtration and analysis to prevent abrasive wear in cylinders and valves
Establish and enforce load moment indicator (LMI) system calibration schedules and operator training to prevent structural overloading during operation

Compliance & Manufacturing Standards

Reference Standards

ISO 10567:2007 - Cranes - Hydraulic telescopic booms ANSI/ASME B30.5 - Mobile and Locomotive Cranes DIN 15018-1 - Cranes; principles for steel structures; calculation

Manufacturing Precision

Boom section straightness: +/-0.5mm per meter
Pin hole diameter tolerance: +0.02mm/-0.01mm

Quality Inspection

Magnetic Particle Inspection (MPI) for weld integrity
Load testing to 125% of rated capacity

Factories Producing Telescopic Boom

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.

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

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 the telescopic boom construction?

Our telescopic booms are constructed from high-strength steel and alloy steel for optimal durability and load-bearing capacity in industrial applications.

How does the hydraulic extension system work?

The boom features a multi-section hydraulic system with cylinders that smoothly extend and retract sections to adjust reach and lifting height with precision control.

What maintenance is required for the boom components?

Regular inspection of hydraulic cylinders, pins, locks, sheaves, and pulleys is recommended, along with lubrication of moving parts and monitoring for structural integrity.

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.

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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