Important Information about Grove GMK 30 55 Boom Truck

Grove all-terrain cranes are manufactured in facilities in Wilhelmshaven, Germany, and Niella, Italy. Equipment quality complies with ISO9001 standards and provides superior lifting, off-road mobility, speed, and reliability.

General Information

The compact Grove GMK 30 55 three-axle carrier model has a total gross weight of 3,600 kg. and maximum 55 ton capacity. It runs on an automatic 349 HP engine. The crane has a six-section boom operated from the acoustically-lined operator cab armrest controls.

Specifications – Boom Truck Crane

The Grove GMK 30 55 boom truck has a box-type chassis with a steel, torsion-resistant frame. The two-man, forward-tilt, aluminium cab features safety glass, driver / passenger seats (with pneumatic suspension), instrumentation, controls, (engine dependent) hot water heater.

  • It has a 24V electric system and three-phase alternator, 28V/100A 2 batteries, and 12V/170 Ah.
  • The anti-two-block system and load moment provide a control lever lock out and audio-visual warning with electronic readouts:
    • boom length, angle, and radius,
    • tip height,
    • load moment,
    • max. allowable load, and
    • two-block condition warning.
  • Outriggers may be put in full (6,2 m.), partial (4,4 m.), or retracted (2,3 m.) position.
  • The programmable ECOS (Electronic Crane Operating System) controls all principle crane operations.
  • EKS5 Light Monitoring operates as a load moment indicator or control and command system which continually monitors the crane’s lifting condition of the crane.
  • The full boom is a six-section, 9,7 m. – 43 m. with a max. tip height of 45,8 m. and TWIN-LOCK™ automatic boom pinning system. The removable / auxiliary boom nose has a removable pin-type rope guard.
  • An axial piston motor powers main and auxiliary hoists. Movement is indicated by the “thumb-thumper” (hoist drum rotation indicator).
    • Main / Auxiliary Line Length: 170 m.
    • Main / Auxiliary Rope Dia.: 16 mm.
    • Main / Auxiliary Line Speed: 120 m/min.
    • Main / Auxiliary Line Pull: 50 kN.
  • Standard and hydraulically off-settable lattice extensions have 8,7 m. –15 m. bi-fold lattice swingaways, hydraulic luffing, or manual offset. The max. tip height of each type is 60,7 m.
  • Crane swing is powered by an axial piston, fixed displacement, motor / planetary gear box, variable to 2.5 rpm. It has a holding / service brake.
  • The 11, 600 kg. counterweight is controlled from the cab and has a hydraulic-removal system.
  • The hydraulic system operates on two individual circuits: one axial piston, load-sensing, variable displacement electronically powered, limiting control, pump, and a gear pump (for swing). Oil coolers have dual thermostat controls. Tank capacity is 600 L.

Specifications – Boom Truck Engine / Mobility

The Grove GMK 30 55 boom truck is powered by a 6x4x6 Mercedes Benz OM501LA, six-cylinder, diesel, turbo-charged engine (260 kW @ 1800 rpm). Max. engine torque is 1,730 Nm @ 1080 rpm. Engine emissions meet EUROMOT/EPA/CARB (off road) standards. The equipment also has:

  • a ZF, AS Tronic 12-speed (2 reverse) transmission,
  • pneumatic dual circuit and compression brakes, and
  • a fuel tank capacity of 300 L.
  • Drive axels have center-mounted gearing and planetary hub-reduction. Also, inter-axle and cross-axle differential locks.
  • Grove’s exclusive MEGATRAK™ independent, hydropneumatic suspension is considered the “best” versatile, offroad, all-wheel driveline available on the market. The suspension may be raised (170 mm.) or lowered (130 mm.) longitudinally or transversely. It includes an automatic leveling system (highway travel).
  • Six 16.00R25 tires afford a max. speed of 85 km/h and 72% gradeability.

Structural Steel Fabricators and Their Role in The Construction Industry

Structural steel is commonly-used in high-rise commercial and industrial building construction primarily because of its high strength, toughness, rigidity, and ductile properties. Structural steel is the most cost-effective building frame material. Structural steel members are fabricated in structural H-beams, I-beams, and T-beams, which are used as structural load bearing members. Structural steel fabricated off site under controlled conditions reduces costly job site modifications.

Structural Steel Fabricators

Structural steel fabricators provide and erect quality, fabricated steel components and structures. They offer a cost effective, durable, and stable high quality steel construction solution. The typical structural steel fabricator employs admin personnel and salespeople, engineers and project managers, detailers, shop workers, equipment operators, welders and painters, inspectors, and delivery drivers. Construction projects range from the fabrication of several tons of structural steel for to tens of thousands of tons for a high-rise commercial structure. Approximately one ton of steel is required for every 200 SF of building area.

Structural steel fabricators physically prepare the structural steel components for a construction project (bridge or building). Upon project award, the fabricator’s steel detailer is responsible for creating accurately-dimensioned drawings of each structural steel component and connections to be fabricated. Acceptable load dimensions must comply with the equivalent standard requirement for that size and shape of structural steel required by code. The structural engineer approves the drawings and the shop flow and project schedule / material management sequence is prepared, to include:

  • (Plasma) cutting to the proper length,
  • Punching or drilling,
  • Shop fitting (bolting, welding),
  • Cleaning and painting or galvanizing when required,
  • Grouping members in their field-erection order, and
  • Shipping and delivering to the project site.

Just-in-time delivery also speeds up project schedules, reducing costs. Structural steel members are delivered to the work site ready for installation / erection which are immediately ready for welding. Columns, trusses, beams, purlins, frames, trestles and bridges, walkways, stairs, platforms, handrails, guards, grating, towers, and pipe racks are some of the fabricated structural steel products offered by fabricators. The reduced construction, welding, and installation time amounts to additional cost savings. Structural steel fabricators withstand insects, moisture / water, and fire due to their fire, mold / mildew, water, and corrosion resistance properties. Structures endure natural disasters better.

Recycled Structural Steel Fabricators

Structural steel is the leading green structural construction material. The structural steel industry is proactively contributing to reducing targeted emissions and increasing energy efficiency and related environmental matters.

Recycled structural steel far exceeds typical cost benefits of using an equivalent recycled material (recycled timbers, etc.). The structural steel industry remains the world leader in recycled material and end-of-life recycling, including recycled structural steel beams and columns content. Recycled structural steel fabricators strive to provide quality products that:

  • produce less carbon dioxide emissions,
  • produce lower energy consumption levels, and
  • support environment conservation.