GR-900EX-4 – Smart Counterweight, increased capacity when working at radius

The 90-tonne class GR-900EX-4 comes with 9.1 tonnes of self-rigging counterweight to reduce set-up time at the jobsite. Exclusive two-position Smart Counterweight system quickly increases lift capacity when moving the counterweight from the forward to rear position.

Synchronized boom extension of the third, fourth and fifth sections deliver quick deployment. The crane’s 2-staged, bifold jib offers 10.1-m and 17.7-m lengths with offset positions of 3.5˚, 25˚ or 45˚ to deliver up to a 64.4-m lifting height. The Tadano Smart Chart determines lift capacity based on boom and outrigger positioning to provide maximum capacity when the outriggers cannot be fully extended.

The new GR-900EX-4 delivers high lifting performance and driving efficiency, while its automatic pump disconnect feature can save you more than 300 liters of fuel annually. Its automatic transmission and 4-wheel drive provide effortless navigation of unpaved, muddy undeveloped jobsites.

Equipped with a catwalk, the crane’s cab is accessible from any slewing angle. Its 20˚ tilt angle reduces neck strain and operator fatigue. The crane’s lift charts, including Smart Chart mode, video feed from the Tadano View System and operating parameters are all displayed on the in-cab large-screen display.


Technical data

  • Max. Lifting Capacity
    90 t
  • Boom
    12 m - 47 m
  • Boom extension
    10.1 m / 17.7 m
  • Max. Sheave height
    67 m
  • Max. radius
    52 m
  • Engine

    Cummins B6.7 (EU Stage V)

    209 kW (280 HP)

  • Gear
    switchable between 4 x 2 front-wheel drive / 4 x 4 all-wheel drive
  • Dimensions

    Length: 14.4 m

    Width: 3.3 m

    Height: 3.8 m