Name: Fully Foldable Telescopic Crane (Knuckle-Telescopic Crane)
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Location: Home > Products > Construction Machinery > Truck Crane > Fully Foldable Telescopic Crane (Knuckle-Telescopic Crane)

Fully Foldable Telescopic Crane (Knuckle-Telescopic Crane)

Fully foldable telescopic cranes are compact and light, making them perfect for small vessels, especially where space is limited. Cranes of this type—our “workhorses of the sea”—are commonly used on auxiliary vessels such as multifunctional workboats, tugs and pontoons. They are highly suitable for cargo handling, onboard service activities, RIB handling and hose handling. manoeuvrability.

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1. Overview

A fully foldable telescopic crane combines the space-saving articulated knuckle design with the extended reach of a telescopic boom . It folds compactly for storage/transport and extends hydraulically for maximum working radius. These cranes are widely used on vessels, trucks, and industrial applications where space is limited but high reach and capacity are required.

2. Key Features

Feature	Description
Knuckled + foldable + extendable	Three-in-one design: folds for storage, unfolds for work, extends for reach
Compact storage	Minimal deck/vehicle footprint when not in use
Telescopic boom sections	Multi-stage hydraulic extension for variable working radius
High maneuverability	Can operate in confined spaces (ship decks, narrow job sites)
360° continuous slewing	Full rotation for flexible positioning (HLRM model)
Marine-grade corrosion protection	ISO 12944 CX / NORSOK M-501 standards
Capacity range	3 tm to over 120 tm (ton-meters)

3. Technical Specifications (Representative Models)

Heila HLM / HLRM Series (Marine)

Parameter	HLM Model	HLRM Model
Slewing system	Rack and pinion	Slew bearing
Rotation	>360°	Continuous rotation
Capacity range	3 tm – 120+ tm	3 tm – 120+ tm
Application	Workboats, tugs, pontoons	Same + continuous rotation ops
Key feature	Fold up/down operation	Full continuous rotation

MAXTECH Marine Telescopic Crane (Heavy)

Parameter	Value
Safe Working Load	Up to 120 tons
Working Radius	5 – 30 meters
Slewing Speed	0 – 0.4 r/min
Motor Power	~55 kW
Electrical System	440V 60Hz 3P
Anti-corrosion	ISO Sa2.5 blast + epoxy zinc primer

YQ8Z3 Knuckle-Telescopic Crane (Medium)

Parameter	Base	Advanced	Pro
Load Capacity	5.0 t	6.0 t	7.0 t
Boom Length	8 m	10 m	12 m
Control	Manual	Remote + Manual	Smart IoT
Material	Galvanized steel	Galvanized steel	Galvanized steel

SHNICETECH Marine Telescopic Crane

Outreach (m)	SWL (t)	Lifting Moment (kNm)	Pedestal Dia (mm)	Weight (t)
8.0-12.0	2.1-1.1	132-168	885	2.8-3.2
12.0-16.0	3.6-2.3	370-430	1095	5.3-6.3
14.0-18.0	6.1-4.2	749-855	1490	11.5-12.8
27.5	30.0	2200	1800	25.0
35.0	35.0	5000	2240	35.0
43.0	80.0	12000	2550	100.0
50.0	150.0	25000	4000	220.0

Mini Marine Crane – LFIMA GHE-1200

Parameter	Value
SWL	3.9 tons
Working Radius	3 – 20 m
Total Weight	18,500 kg
Corrosion protection	ISO C5-H / Galvanized
IP rating	IP56 (control box)

4. Key Advantages

Advantage	Benefit
Space-saving	Folds compactly; perfect for small vessels and vehicles
Long reach in confined spaces	Telescopic extension provides working radius without moving the crane
Marine durability	Special anti-corrosion coatings for saltwater/humid environments
Precision control	Hydraulic proportional control for smooth, precise movements
Versatile mounting	Deck, pedestal, truck, or wall mounting
Harsh environment resistance	Wind ≤20 m/s operation; salt-fog resistant design

5. Applications

Industry	Typical Use	Recommended Model
Marine / Vessel	Cargo handling, provisioning, RIB handling, hose handling	Heila HLM/HLRM, MAXTECH
Offshore / Oil & Gas	Platform maintenance, subsea equipment, FPSO	MAXTECH (with AHC)
Ports & Terminals	Container handling, bulk cargo transfer	SHNICETECH series
Truck-Mounted	Self-loading trucks, material delivery	YQ8Z3, compact models
Industrial / Workshop	Heavy material handling, machinery installation	Mini floor cranes
Utility / Maintenance	Overhead work, confined site lifting	Telescopic folding boom

6. Key Technologies & Options

Technology	Function
Active Heave Compensation (AHC)	Compensates vessel motion; mm accuracy for subsea
Corrosion protection	ISO Sa2.5 blast + epoxy zinc primer / NORSOK M-501 / C5-H
Remote control	Wireless operation for safety
ATEX / Explosion-proof	For hazardous environments
Personnel basket	Man-riding certification available
Grab / Electromagnetic chuck	Material-specific attachments
Smart IoT integration	Real-time monitoring (Pro models)
Load moment indicator (LMI)	Overload protection
Holding valves	Prevents sudden boom drop on hydraulic failure
Emergency manual valves	All actions have manual backup

7. Surface Protection Standards

Standard	Description
ISO Sa2.5	Near-white metal blast cleaning
NORSOK M-501 system 1	Highest marine standard
ISO 12944 CX	High-corrosivity protection
C5-H	Very high corrosion (marine/offshore)
Hot dip galvanizing	Optional enhanced protection
Epoxy zinc-rich primer	Standard marine coating

8. Buying Guide

Factor	Consideration
Required capacity	SWL (tons) at max working radius
Max outreach	Required horizontal reach (meters)
Mounting type	Deck / pedestal / truck / wall
Operating environment	Marine (corrosion), offshore (AHC), hazardous (ATEX)
Certification required	ABS, BV, CCS, DNV, LR, RS
Power source	Electric / hydraulic / diesel-hydraulic
Personnel lifting	Need man-riding certification?
Special attachments	Grab, basket, electromagnet

Key Questions to Specify

Main use scenario (vessel cargo / offshore / port / truck)
Max lifting weight (tons)
Max working radius (meters)
Operating environment (temperature, salt spray, wind speed)
Power supply (voltage, frequency, phase)
Classification society (ABS, BV, CCS, DNV, LR)
Special requirements (AHC, ATEX, man-riding)

9. Delivery & Service

Item	Details
Lead time	30–90 days (custom configurations longer)
Minimum Order	1 unit
Shipping	Bulk vessel / Flat rack / Container
Warranty	12–24 months
Payment terms	T/T, L/C at sight
Certification	ABS, BV, CCS, DNV, LR, RS (buyer's choice)
Inspection	3rd party load test certificate available
Installation	Engineer available for on-site installation guide
Support	24/7 online technical support

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