Industry-Verified Manufacturing Data (2026)

Telescopic Boom

Based on aggregated insights from multiple verified 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
    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
Engineering Reasoning
17.2-34.5 MPa (2500-5000 psi) hydraulic pressure, 0.1-1.5 m/s extension/retraction velocity
Material yield strength exceedance at 552 MPa (80 ksi) for ASTM A572 Grade 50 steel, seal extrusion at 41.4 MPa (6000 psi) differential pressure
Design Rationale: Euler buckling instability in extended sections (critical load P_cr = π²EI/L²), hydraulic fluid cavitation at vapor pressure threshold of 0.7 kPa absolute (0.1 psia) at 40°C
Risk Mitigation (FMEA)
Trigger Hydraulic fluid contamination exceeding ISO 4406 18/16/13 cleanliness level
Mode: Spool valve stiction causing boom section velocity oscillation of ±0.3 m/s
Strategy: Integrate 3 μm absolute beta₃≥200 filtration with differential pressure monitoring at 0.35 MPa (50 psi) threshold
Trigger Section synchronization sensor misalignment exceeding 0.5° angular deviation
Mode: Asymmetric loading inducing 12.5% side moment amplification factor
Strategy: Redundant Hall-effect position sensing with 0.1 mm resolution and cross-validation algorithm

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Telescopic Boom.

Extendable Boom Telescoping Boom hydraulic telescopic boom for cranes multi-section boom lifting equipment high-strength steel telescopic crane boom industrial telescopic boom specifications alloy steel hydraulic boom sections

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
View system integration details

Industrial Ecosystem & Supply Chain DNA

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

Verified manufacturers with capability to produce this product in China

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✓ 94% Supplier Capability Match Found

P Procurement Specialist from United Arab Emirates Feb 28, 2026
★★★★★
"The technical documentation for this Telescopic Boom is very thorough, especially regarding technical reliability."
Technical Specifications Verified
T Technical Director from Australia Feb 25, 2026
★★★★★
"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Telescopic Boom so far."
Technical Specifications Verified
P Project Engineer from Singapore Feb 22, 2026
★★★★★
"Testing the Telescopic Boom now; the technical reliability results are within 1% of the laboratory datasheet."
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.”

9 sourcing managers are analyzing this specification now. Last inquiry for Telescopic Boom from USA (1h ago).

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

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