Our knuckle boom cranes lift heavy loads with extended jibs and offer great operational flexibility. Equipped with advanced control systems, they handle oscillatory movements from harsh weather and rough seas, making them ideal for high sea states. We also provide combined knuckle-jib telescopic cranes, plus tailored solutions (jib length, load capacity) backed by marine lifting expertise—delivering reliable, customized support for your unique needs.
Technical Specifications
Parameter
Standard Range
Unit
Lifting capacity
3-70
Tons
Boom length
3.5-21
Meters
Min Lifting Speed
0-3
M/MIN
Max Lifting speed
15-48
M/MIN
Wind Resistance
0-7
M/MIN
Power Supply
Diesel/Electric
-
Core Applications & Features
Multi-joint Knuckle Boom Design
Features a multi-section folding structure; folded length is only 30%-50% of its extended length, perfect for narrow spaces on ship decks or offshore platforms.
Precision Lifting
Each joint rotates independently, enabling multi-angle precision lifting for complex offshore operations.
Marine-Grade Corrosion Resistance
Electrical components (motors, sensors) feature IP66/IP67 protection ratings, specifically designed for heavy rain and spray environments.
High Safety & Compliance
Standard multi-layer safety systems include overload protection, boom angle limiting, and emergency stop functions.
Operational Flexibility
Optional telescopic + knuckle hybrid booms expand working radius, with remote control options to ensure personnel safety.
Frequently Asked Questions
Q1: How do you ensure the durability of products in offshore conditions?
We use marine-grade materials like high-strength alloy steel and corrosion-resistant stainless steel. All equipment undergoes professional anti-corrosion treatments, including hot-dip galvanizing and marine paint coating, followed by 1000+ hours of salt spray and vibration testing.
Q2: Can the cranes be customized for specific vessel types?
Yes, 80% of our orders are customized. We tailor solutions based on vessel tonnage, deck space, and operating environments (shallow water/deep sea) to optimize structure and control systems.
Q3: What is the load capacity range for your marine cranes?
Our offshore cranes range from 0.5T to 100T. This includes fixed boom, knuckle boom, and telescopic boom configurations, along with ultra-heavy-duty customization for wind power installation.
Q4: What safety features are included in the crane design?
Standard safety systems include overload protection, boom angle limiting, and emergency stop buttons. We also offer optional explosion-proof certifications (ATEX/IECEX) for hazardous environments.
Q5: What are the power supply options for these cranes?
We offer both diesel and electric power options. Electric systems are ideal for fixed platforms with shore power, while diesel units provide independent operation for mobile vessels.
Q6: What factors influence the final price of the equipment?
Pricing is determined by the load capacity, technical parameters, level of customization (e.g., explosion-proof or remote control), component material grades, and total order quantity.