K4 four-rope grab crane
With market-leading positioning performance, efficiencies and capacities, the MacGregor K4 grab crane delivers a full range of benefits to dry bulk operators.
This is backed-up by our lengthy experience, unrivalled global service support and proven track record of more than 13,000 crane deliveries worldwide over the past 50 years.
K4 electro-hydraulic four-rope grab cranes are self-contained units with all machinery enclosed in the crane housing. This protects them from weather, corrosion, dust and damage. The standard K4 range covers lifting capacities from 25 to 50 tonnes in grab operation, with outreaches of up to 36m.
To further improve outreach, cycle time and positioning performance, the crane can be installed on an eccentric platform.
Each crane is tested electrically, hydraulically and mechanically before delivery.
K4 cranes are designed to meet the rules of all recognised classification societies.
The MacGregor control system ensures smooth, fast and stepless crane control. Hoisting, luffing and slewing motions are independent of each other. This means that at their maximum capacity, K4 cranes can operate at full speed using all three movements at the same time.
K4 crane design is calculated according to the latest FEM rules,1.001.
Important crane criteria
- FEM-rules, 1.001
- High capacities
- High speeds
- Positioning performance
- Operator convenience
- Robust design
- Excellent and optimised control
- Individual adjustment possibilities
- Enhanced monitoring capabilities
- Integrated diagnostic functions
- Closed hydraulic system; all motions are available at the same time at full speed and load
- Low power consumption
- Planetary gears and hydraulic motors with fail-safe brakes
For K4 units, where U7-A8-Q3 applies to the whole crane, this equates to:
- 500,000 hoisting cycles during the lifetime of the crane
- Up to 1,500 working hours/year
- Up to 20 years lifetime, depending on the number of hours worked per year.
- Camera on jib top
- Automatic greasing of slewing bearing
- Increased speeds for K50
- SeaState selector
- Active pendulation control
- Anti-collision system
Read more from our brochures:
Services for K4 four-rope grab cranes
Modernisations and upgrades for cargo cranes
MacGregor's 'modernisation kits' quickly pay for themselves, easing cost burdens and unlocking a crane’s profitability for another 10-15 years.
Spare parts for cargo cranes
MacGregor cranes need MacGregor spare parts. An emergency box on board, containing essential MacGregor spares, helps keep your cranes up and running.
Other cargo cranes
Active Pendulation Control (APC) for cargo cranes
Active pendulation control improves discharge times and the safety of crew and cargo and offers major benefits for offshore and transloading operations.
Electric gantry crane
A cost-effective, efficient, eco-friendly solution ideal for handling lift-away hatch covers
General purpose (GP) crane
MacGregor’s general purpose cranes handle your spares and provisions in a safe and reliable way.
GL cargo crane
MacGregor GL cranes offer excellent positioning and are designed for flexibility; they can handle containers and multi-purpose cargoes.
GLB cargo crane
GLB deck cranes offer high capacity bulk handling with proven performance capabilities.
GLBE cargo crane
MacGregor GLBE electric cranes deliver fast, clean and controlled lifts, eliminating any pollution associated with hydraulic oil and offering the highest efficiencies.
GLH cargo crane
MacGregor GLH cargo cranes are designed for handling heavy-lift and multi-purpose cargoes safely and reliably.
Hose handling (HH) crane
MacGregor’s range of hose-handling cranes is designed to work in hazardous environments; they deliver safe and reliable operations.
K4 heavy duty grab crane
The MacGregor K4 heavy-duty grab crane meets the toughest capacity demands and environmental conditions.
LC cargo crane
MacGregor LC cargo cranes are an ideal solution for vessels where dimensions must be compact and air-draft is limited.
MacGregor port cranes are a perfect solution for small and medium-sized ports; they are designed for handling bulk, containers and general cargo.