Knuckle Boom Crane

Category： Marine Crane
Saltwater Corrosion Defense：316L Stainless Joints | 400μm Epoxy Coating (ISO 12944 C5-M)
Dynamic Wave Compensation：±2m Heave Compensation | 25m/s Wind Tolerance
Knuckle Boom Flexibility：15m Reach | 270° Rotation | 5T-50T SWL
Smart Safety Controls：Overload Cutoff (≤0.5s) | Remote Diagnostics | Dual Hydraulic Brakes
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Marine Single Knuckle Boom Crane

Brand: Henan Hengkun Crane Co., Ltd.

Applications: Offshore supply vessels, cargo ships, workboats, and marine platforms requiring robust, simplified lifting solutions for cargo handling, equipment deployment, and logistics operations in confined or dynamic maritime environments.

Product Overview

Our Marine Single Knuckle Boom Crane is a heavy-duty, single-joint articulated crane designed for reliable, high-performance lifting on ship decks. Featuring a simplified single-knuckle arm instead of multi-joint configurations, this crane prioritizes durability, ease of maintenance, and rapid operation in harsh saltwater conditions. With a lifting capacity of up to 50 tonnes and optimized stability, it is ideal for repetitive cargo transfers, anchor handling, or deploying subsea equipment without the complexity of multi-joint systems.

Key Features & Benefits

Simplified Single-Joint Design
- Single-knuckle articulation reduces mechanical complexity, enhancing reliability and maintenance efficiency.
- Reinforced steel construction with ISO 12944 C5-M anti-corrosion coatings for marine environments.
High Stability & Precision
- 360° continuous slewing and fixed-radius lifting for straightforward load positioning.
- Optional Active Heave Compensation (AHC) for operations in rough seas.
Marine-Grade Durability
- IP68-rated hydraulic systems and waterproof electrical enclosures.
- Storm-proof design withstands winds up to Beaufort Scale 12.
Safety & Compliance
- Overload protection, dual hydraulic brakes, and emergency stop functions.
- Certified by DNV GL, ABS, or Lloyds Register for maritime operations.
Energy Efficiency
- Regenerative hydraulics reduce energy consumption by 15–20%.
- Hybrid power options (diesel-electric or shore power compatibility).

Technical Specifications

Parameter	Specification
Lifting Capacity	5–50 tonnes (SWL at specified radius)
Max. Working Radius	8–20 meters (fixed single-knuckle design)
Boom Configuration	Single knuckle joint + fixed main boom
Slewing Range	360° continuous rotation
Lifting Speed	0–25 m/min (variable frequency control)
Hydraulic Pressure	250–320 bar
Power Supply	380–690V AC, 50/60Hz or diesel-hydraulic
Protection Grade	IP68 (critical components)
Wind Resistance	Beaufort Scale 12 (storm-proof design)
Ambient Temperature	-30°C to +50°C
Certifications	DNV GL, ABS, Lloyds Register, ISO 4309

Customization Options

Heave Compensation: Passive or Active Heave Compensation (AHC/PHC).
Attachments: Standard hooks, grabs, or subsea tooling interfaces.
Mounting: Fixed pedestal or rail-mounted for deck mobility.
Safety Add-ons: Load moment indicators (LMI), anti-collision sensors, or emergency recovery winches.
Special Coatings: Arctic-grade anti-icing or fire-resistant finishes.

Service & Certifications

Global Compliance: DNV GL, ABS, ISO 9001, ISO 14001.
Installation: On-board commissioning by certified marine engineers.
Warranty: 24 months (extendable) with 24/7 global technical support.
Training: Crew safety protocols and simplified maintenance programs.

Why Choose Us?
As a leading Chinese manufacturer, we specialize in cost-effective marine cranes that balance rugged simplicity with cutting-edge performance. Our single knuckle boom cranes are rigorously tested for reliability in extreme offshore conditions, offering unmatched durability for repetitive maritime lifting tasks.

Request a Quote – Simplify your shipboard operations with robust, no-nonsense lifting power!