Editorial Technical Reference

Telescopic Crane

This page explains how Telescopic Crane is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A mobile crane with a telescoping boom that extends and retracts hydraulically for lifting and moving heavy loads.

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Product Specifications

Technical details and manufacturing context for Telescopic Crane

Definition
A telescopic crane is a type of mobile lifting equipment characterized by a boom consisting of several nested, hydraulically extendable sections (telescopes). This design allows for significant variation in boom length and reach without requiring manual assembly or disassembly of boom segments. Mounted on a carrier vehicle (typically a truck chassis), it combines mobility with versatile lifting capabilities, making it essential for construction, logistics, and industrial material handling where frequent repositioning and variable reach are required. The crane operates by using a hydraulic system powered by the vehicle's engine or a separate power pack. Hydraulic cylinders extend the nested boom sections sequentially or simultaneously to achieve the desired length and height. Load lifting and lowering are controlled via a winch and wire rope system, also hydraulically driven. The carrier provides mobility, while outriggers (hydraulically deployed stabilizers) extend to create a stable base during lifting operations. An operator controls all functions (boom extension/retraction, lifting, slewing, outrigger deployment) from a cab or remote control. Typical specifications for such cranes include maximum lifting capacity from 8 to 160 metric tons (per ISO 4305), maximum boom length from 12 to 80 meters, maximum lifting height from 15 to 100 meters, and maximum radius from 10 to 70 meters. Carrier engine power ranges from 150 to 500 kilowatts (per ISO 3046-1), operating pressure from 25 to 35 MPa, boom extension speed from 0.1 to 0.3 m/s, slewing speed from 1 to 3 r/min, and operating temperature range from -20 to 50 °C. Maximum wind speed for operation is 9 to 14 m/s (per ISO 4302). Total weight ranges from 15 to 100 tons, overall length from 8 to 20 meters, width from 2.5 to 3.5 meters, and height from 3.5 to 4.5 meters. Materials typically include high-strength steel and alloy steel. These values are reference ranges; verify model-specific data with the manufacturer or supplier.
Working Principle
The crane operates by using a hydraulic system powered by the vehicle's engine or a separate power pack. Hydraulic cylinders extend the nested boom sections sequentially or simultaneously to achieve the desired length and height. Load lifting and lowering are controlled via a winch and wire rope system, also hydraulically driven. The carrier provides mobility, while outriggers (hydraulically deployed stabilizers) extend to create a stable base during lifting operations. An operator controls all functions (boom extension/retraction, lifting, slewing, outrigger deployment) from a cab or remote control.
Common Materials
High-strength steel, Alloy steel
Technical Parameters
ParameterTypical rangeNotes & selection driver
Maximum Lifting CapacityRequired8–160 metric tonsThe heaviest load the crane can lift under specified conditions (typically at minimum radius with outriggers fully extended).ISO 4305
Maximum Boom LengthRequired12–80 metersFully extended length of the main telescopic boom.
Maximum Lifting HeightRequired15–100 metersMaximum vertical reach from ground to hook at full boom extension.
Maximum RadiusRequired10–70 metersMaximum horizontal distance from crane center of rotation to hook at full boom extension.
Carrier Engine PowerRequired150–500 kilowattsPower output of the truck's engine.ISO 3046-1
Operating Pressure25–35 MPaHydraulic system pressure
Boom Extension Speed0.1–0.3 m/sNo-load extension speed
Slewing Speed1–3 r/minAt maximum load
Operating Temperature Range-20–50 °CHydraulic fluid viscosity limits
Max Wind Speed for Operation9–14 m/sAbove this, crane must be securedISO 4302
Total Weight15–100 tIncluding carrier and counterweight
Overall Length8–20 mIn transport configuration
Overall Width2.5–3.5 mWithin legal road limits
Overall Height3.5–4.5 mIn transport configuration

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
  • Telescopic Boom
    Provides variable length and reach for lifting operations; consists of nested sections that extend and retract hydraulically.
    Material: High-strength steel box sections
  • Carrier Chassis
    Provides mobility and serves as the base platform for the crane superstructure; typically a multi-axle truck.
    Material: Alloy steel frame
  • Hydraulic System
    Powers all crane movements including boom extension/retraction, lifting, slewing, and outrigger deployment via hydraulic pumps, cylinders, valves, and fluid.
    Material: Steel pumps, cylinders, hoses; hydraulic fluid
  • Outriggers
    Hydraulically extendable stabilizers that deploy to the ground to provide a wide, stable base and distribute load during lifting operations.
    Material: High-strength steel beams and cylinders
  • Winch and Hoist System
    Lifts and lowers the load via a motor-driven drum, wire rope, and hook block assembly.
    Material: Steel drum, wire rope, alloy hooks
  • Operator Cab/Controls
    Enclosed cabin or remote control station from which the operator controls all crane functions; includes levers, joysticks, and instrumentation.
    Material: Steel/glass cabin, electronic controls
  • Jib Extension Optional
    Optional lattice or telescopic extension mounted at the boom tip to increase lifting height and reach.
    Material: Steel lattice or tubular sections

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Telescopic Crane.

Telescopic Truck Crane Hydraulic Mobile Crane Boom Truck RT Crane

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Max hydraulic pressure: 350 bar
other spec: Max flow rate: 200 L/min, Max wind speed: 20 m/s, Max load moment: 5000 kNm
temperature: -20°C to +50°C
Media Compatibility
✓ Construction materials (steel beams, concrete panels) ✓ Industrial equipment (machinery, generators) ✓ Shipping containers
Unsuitable: Corrosive marine environments (saltwater exposure)
Sizing Data Required
  • Maximum lifting capacity (tons)
  • Maximum working radius/boom length (meters)
  • Required lifting height (meters)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Hydraulic cylinder seal failure
Cause: Contamination of hydraulic fluid leading to abrasive wear, improper seal material selection for operating conditions, or excessive pressure spikes causing extrusion
Boom section structural fatigue cracking
Cause: Cyclic loading beyond design limits, corrosion weakening structural integrity, or manufacturing defects in weld joints creating stress concentrations
Maintenance Indicators
  • Unusual hydraulic fluid leaks at cylinder joints or boom extension points
  • Abnormal noises during boom extension/retraction such as grinding, knocking, or irregular hydraulic whining
Engineering Tips
  • Implement regular hydraulic fluid analysis and filtration maintenance to prevent contamination-related failures
  • Establish and enforce load cycle monitoring with periodic non-destructive testing (NDT) of critical weld joints and structural components

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 4309:2017 - Cranes - Wire ropes - Care, maintenance, installation, examination and discard ANSI/ASME B30.5 - Mobile and Locomotive Cranes EN 13000:2010 - Cranes - Mobile cranes

Quoted from the published standard.

Manufacturing Precision
  • Boom extension alignment: +/- 0.5 degrees
  • Hydraulic cylinder bore: +/- 0.025mm
Quality Inspection
  • Non-Destructive Testing (NDT) - Magnetic Particle Inspection
  • Load Testing - Dynamic and Static Load Tests

Manufacturers of Telescopic Crane

Manufacturer profiles associated with Telescopic Crane.

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Frequently Asked Questions

What is the maximum lifting capacity of a telescopic crane?

According to directory reference data, the maximum lifting capacity ranges from 8 to 160 metric tons, as per ISO 4305. The actual capacity depends on the specific model, configuration, and operating conditions such as boom length and outrigger deployment. Always consult the manufacturer's load charts.

How does the telescopic boom extend?

The boom consists of nested sections that are extended hydraulically. Hydraulic cylinders push the sections out sequentially or simultaneously, allowing the boom length to vary without manual assembly. The extension speed is typically 0.1 to 0.3 m/s under no load.

What are the typical dimensions of a telescopic crane?

Reference dimensions include overall length from 8 to 20 meters, width from 2.5 to 3.5 meters, and height from 3.5 to 4.5 meters in transport configuration. Total weight ranges from 15 to 100 tons. These are general ranges; verify the specific model's dimensions with the supplier.

What safety standards apply to telescopic cranes?

Relevant standards referenced in the directory include ISO 4305 for lifting capacity, ISO 3046-1 for engine power, and ISO 4302 for wind load. These standards serve as procurement references; compliance must be confirmed with the manufacturer or supplier.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

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

Preliminary Technical Classification
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