Crane-manipulator КМЭГ 3012

Crane-manipulator КМЭГ 3012

Crane КМЭГ 3012 is designed for cargo-handling operations, which support everyday needs of a ship, working with general cargoes up to 3 t in mass at maximum jib outreach.

Cranes are installed aboard ocean-going ships.

The crane consists of a slewing part and a stationary part. The main slewing part is the crane housing being a welded metalwork. Inside the crane housing, there is a pump unit and elements of hydraulic and electric systems.

The crane controls from the stationary control desk arranged at the platform on the crane housing side.

The crane housing also accommodates the electric equipment control panel and signaling unit, which are mounted at the side of the control platform.

Cargo hoisting mechanism consists of the cargo winch with the planetary reduction gear built in the drum, cargo rope, sheave fitted at the jib end and the cargo suspension with the hook.

The crane jib – welded metalwork of box-girder section.

Luffing mechanism – two hydraulic cylinders, which ensure the luff range from 3.2 to 12 m.

Cargo winch mounted on the jib support platform is equipped with a normally closed disk brake holding the cargo to be hoisted even in case of pressure drop in the crane hydraulic system.

Hydraulic system provides the following operation modes:

  • alternate operation of each crane mechanism (cargo winch, slewing mechanism, hydraulic cylinder of luffing mechanism and alternate extension of telescoping sections) with preset speed;
  • simultaneous operation of any two of above mechanisms with reduced speed.


Basic technical data
Hoisting capacity, kg, variable depending on a jib outreach: 3000 ÷ 4700
Jib outreach, m:
- maximum, not less 12
- minimum, not more 3,2
Hoisting and lowering speed of cargo, m/min: 0 ÷ 20
Luffing time, s, not more:
- at jib hoisting and lowering 28
- at sections telescoping 12
Slewing rate, rpm, not less 0,5
Slewing angle, degree 360
Hook hoisting range, m, not less 20
Electric motor rating, kW, not more 22
Structural mass of crane (without working fluid of hydraulic system), t, not more 4

Crane КМЭГ 3012 fulfils cargo operations in the following modes:

  • prolonged list up to 5° to any side;
  • prolonged trim up to 2° by the bow or stern;
  • rolling with amplitude not more than 2°30’.

In stowed position, the crane ensures safe operation if long-term effect of the following operating conditions is stopped and the crane is out of service:

  • list up to 15° to either side;
  • trim up to 5° by the bow or by the stern;
  • rolling with amplitude up to 40°;
  • pitching with amplitude up to 10°;
  • wind load up to 2000 (200) Pa (kgf/m²);
  • periodic splashing with sea water.

Advantages of crane КМЭГ 3012:

  • mass and dimensional parameters are minimized according to possibility of installation aboard small displacement vessels;
  • minimum power consumption by ship's mains;
  • simple design combines with high reliability and minimum time of maintenance;
  • no need in more place on deck as all the equipment is mounted on the crane;
  • provides loading of general cargo aboard ocean-going ships.