Marine Telescopic Knuckle Boom Crane

Marine Telescopic Knuckle Boom Crane

Application

Marine Telescopic Knuckle Boom Crane is mainly driven by hydraulic motor. With the functionality of both a Telescopic Boom and Knuckle Boom crane, the Marine Telescopic Knuckle Boom Crane can do it all. The Knuckle Boom design gives access to tight spaces and saves deck space, and the Telescopic Boom provides additional reach, giving you unparalleled versatility.

Marine Telescopic Knuckle Boom Crane parts include hydraulic pumps, hydraulic motors, gearboxes, electrical items, wire rope, limit switches, slew rings, joysticks, brakes, crane control cabins, crane control systems, and winches, control valves, potentiometers, hook blocks and sheaves, relays, bolts and more. It is usually installed on the dock or on board for loading, unloading, handling, lifting...

Advantages and Features

1. Contract structure, high strength;

2. Saving space, multi-function;

3. Easy installation, low maintenance;

4. Corrosion resistance, long lifespan;

5. Excellent operation, exquisite appearance;

6. Low power consumption, high efficiency;

7. Reliable service, high security;

8. Automatic & manual overload protection system;

9. Local control and remote control;

10. Can be customized according to your requirements;

11. Certificate: IRS, BV, RINA...

Marine Telescopic Knuckle Boom Crane Structure

We not only provide customers with high-quality products, but also provide complete system solutions and high value-added services for specific customers. Therefore, it has strong competitiveness.

Configuration

Part Name	Type/Material	Advantages/Disadvantages
Slewing Bearing	42CrMo	It has high strength and toughness, good hardenability, no obvious temper brittleness, high fatigue limit and multiple impact resistance after quenching and tempering treatment, and good low-temperature impact toughness.
	50Mn	The wear resistance, strength, elasticity and hardness are all high, and they are mostly used after quenching and tempering, and the welding performance is poor. Generally used to manufacture parts with high wear resistance and high stress.
	S45C	Cold plasticity in general, annealing and normalizing are slightly better than quenching and tempering; annealing and normalizing are slightly better than quenching and tempering; they have higher strength and better machinability; Toughness, plasticity and wear resistance.
Hoisting Winch	A32 & E36	Medium weldability, cold deformation, medium plasticity, good machinability; corrosion resistance.
	Q345-B	High strength and good welding performance.
Hydraulic Motor Type	DONGFANG and XINHONG brand	Good quality, cost-effective, long service life. With brake, high safety.
	Other brands	High power consumption, relatively poor quality.
Other Parts	Q345-B	Higher strength and better weldability.
	A32 & E36	Medium weldability, cold deformation, medium plasticity, good machinability; corrosion resistance.

Due to the fierce market competition, the phenomenon of low quality of other winch suppliers is frequent. What is the difference between us and other low-quality suppliers?

The specific differences are as follows:

Part name	Other low quality suppliers	Result	Our factory	Consequence
Slewing Bearing	S45C	Toughness, plasticity and wear resistance are poor, cold plasticity is average	42CrMo	It has high strength and toughness, and good hardenability; after quenching and tempering treatment, it has high fatigue limit and multiple impact resistance, and has good low-temperature impact toughness.
Hoisting Winch	ZG270-500	Casting defects cannot be avoided	A32 & E36	Medium weldability, cold deformation, medium plasticity, good machinability; corrosion resistance.
			Q345-B	High strength and good welding performance.
Hydraulic Motor Type	Other brands	High power consumption, relatively poor quality.	DONGFANG or XINGHONG brand	Cost-effective, good quality. With brake, high safety.
Other Parts	Q235-B	The use of products with small load has low strength, which is not conducive to the use of products with excessive load.	Q345-B	Higher strength and better weldability.
			A32 & E36	Medium weldability, cold deformation, medium plasticity, good machinability; corrosion resistance.

Drawing of Marine Telescopic Knuckle Boom Crane

Main Technical Specification

Safety Load	Max Outreach	Lifting Speed	Slewing Speed	Luffing Time	Hoisting Height	Slewing Angle
kN	m	m/min	m/min	s	m	゜
10	6-20	15	1	60	30	360゜
15	8-22	15	1	60	30	360゜
20	5-24	15	1	60	30	360゜
30	8-25	15	0.9	70	30	360゜
50	12-25	15	0.75	80	30	360゜
80	12-25	15	0.75	100	40	360゜
Above specifications only for reference, We can supply various marine cranes according to your requirements.

Working Images of Marine Telescopic Knuckle Boom Crane

Repair and maintenance matters

1. Overhaul of the transmission.

2. Maintenance and inspection of braking equipment.

3. Repair and maintenance of stressed structures.

4. Maintenance and testing of electrical systems.

5. Repair and maintenance of safety protection equipment.