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Marine knuckle boom crane, SWL 5 t (Technical supply specification)


1. General Information (Operating Conditions)

The crane operates reliably under marine environmental conditions:

  • Ambient air temperature: -40ºC to +40ºC
  • Vessel vibration
  • Periodic sea spray on components
  • Winter storage temperature: -40ºC

2. Purpose

The marine crane is designed for various lifting operations.

Marine knuckle boom crane, SWL 5 t general arrangement drawing side view
Marine knuckle boom crane, SWL 5 t general arrangement drawing side view

About

Marine and Industrial Knuckle Boom Cranes

The knuckle boom crane belongs to the class of versatile lifting equipment designed for controlled cargo handling in confined spaces. These units are engineered as independent systems integrating mechanical, hydraulic, and electrical solutions. Modern knuckle boom cranes are deployed on vessels, industrial sites, and infrastructure facilities requiring stable machinery performance and precise load positioning under environmental loads.

The Role of Knuckle Boom Cranes in Modern Operations

The application of knuckle boom cranes enables a wide range of cargo operations without the need for extensive auxiliary equipment. Due to its design versatility, the crane can handle various cargo types and adapt to the specific requirements of a given facility or vessel. The deployment of this equipment improves operational control and minimizes human-error risks during complex handling procedures.

Section: Continued

Knuckle Boom Crane Operations Under External Loads

Lifting equipment operation often involves exposure to vibrations, high humidity, temperature fluctuations, and mechanical stresses. Under these conditions, the knuckle boom crane must maintain stable performance and predictable machinery behavior. Modern engineering solutions focus on increasing equipment service life, protecting key components from environmental hazards, and ensuring operational stability during long-term service.

Industry Experience and Equipment Production Development

The design and manufacturing of this equipment class require deep mechanical engineering expertise and a thorough understanding of real-world operating conditions. Izhora Hydrosystems LLC manufactures knuckle boom cranes for demanding operating environments, aligning with industry requirements and practical field experience. This approach delivers solutions that seamlessly integrate into the customer’s technical systems and meet industry standards.


3. Scope of Supply

3.1 Marine Knuckle Boom Crane SWL 5 t

3.1.1 Product Composition

ComponentQuantity
Base1
Column1
Inner boom1
Outer boom with telescopic extensions1
Electrical installation1
Slewing drive1
Winch1
Inner boom cylinder1
Extension cylinder1
Hook assembly1
Local control panel1
Control cabinet1
Hydraulic installation1
Hydraulic power unit (HPU)1
Marine knuckle boom crane, SWL 5 t general arrangement drawing top view
Marine knuckle boom crane, SWL 5 t general arrangement drawing top view

3.1.2 Main Parameters

ParameterValue
Safe Working Load (SWL), max, kg4000 (at outreach 3.2 — 6.0 m)
Safe Working Load (SWL), min, kg5000 (at outreach 1.5 — 3.2 m)
Outreach, m1.5…6.0
Hoisting/lowering speed, m/min10
Lowering depth, m (from vessel foundation level)not less than 25.0
Winch drive typehydraulic
Slewing angle, deg.continuous
No-load slewing speed, rpmnot less than 1
Crane controlportable remote control panel with wire/wireless control
Power supply3 phases, 380 V, 50 Hz
Crane weight, kg5100
Operating conditions (during crane operation)Continuous vessel heel to any side up to 5°; Continuous vessel trim by bow or stern up to 2°; Wind pressure not more than 400 Pa; Vessel vibration
Operating conditions (stowed position)Ambient air temperature from -40°C to +40°C; Vessel heel to any side up to 15°; Vessel trim by bow or stern up to 5°; Wind pressure not more than 2000 Pa; Vessel vibration

3.1.3 Spare Parts (SPTA)

Manufacturer’s standard set for 1-year operation: 1 set

3.1.4 Documentation

DocumentQuantity
Product passport1
Installation and operating manual1
List of spare parts1
Factory acceptance test (FAT) report1
Onboard testing program and procedure1

3.1.5 Certificates

CertificateQuantity
RMRS Certificate (RS Form 6.5.30)1
Documents confirming compliance with the requirements of the Decree of the Government of the Russian Federation No. 719 “On confirmation of industrial production within the territory of the Russian Federation”, including all amendments in force.optional

4. Additional Requirements

  • All electrical equipment features IP 56 protection class.
  • All materials are resistant to operating temperature conditions (-40°C … +40°C).
  • Coating system: coating system and color shall be agreed with the Customer.
  • Hydraulic fluid: MGE10-A OST 38.01281-82.
  • Hydraulic fluid cleanliness class according to GOST 17216-71: not lower than 12.
  • Operating ambient air temperature: -40°C to +40°C.
  • Periodic sea spray on crane components and mechanisms, atmospheric precipitation, vessel vibration, sea motion: yes.

5. Manufacturer

Izhora Hydrosystems LLC


6. Warranty Period

12 months from the date of shipment, unless otherwise provided by the contract.


Contacts

Phone: +7 (812) 339-61-68

Email: contact@i-hydro.tech