First flat-top tower cranes from Jaso

Spanish tower crane manufacturer Jaso has added flat-top models to its product range. These include the J200.12 and J200.10 with 12 t and 10 t capacity respectively, offering a maximum radius of 67.5 m.

The J200.12 has a tip load of 1.7 t with a single trolley and single reeving mode (ST-SR), and 1.5 t at 67.5 m with a single trolley and double reeving mode (ST-DR). As an option in SR reeving mode, the J200.12 can lift 1.9 t at 67.5 m.

The J200.10 features a SR-DR trolley and can lift 1.8 t at 67.5 m in SR-DR reeving mode. As an option in SR reeving mode, the crane’s tip load can be increased to 2.0 t at 67.5 m.

The boom lengths for the new cranes start at 30 m and can be extended in 2.5 m increments. The swing radius with the full boom is 14.9 m, and it can be reduced to 12.9 m for booms of 52.5 m and less. Counterweight slabs are the lay-flat type, the same as the weights of the base ballast, common on all Jaso’s latest models. As an option, the counterweight can be steel framed for higher safety.

The 12-t J200.12 comes with a 60 hp hoist, delivering a maximum speed of 152 m/min. An 88 hp unit is optional, giving a maximum speed of 225 m/min. For the two models, the hoist drums can be specified with Lebus grooving and the rope capacity is 1,378 m. The J200.10 has a standard 33 hp hoist, with an optional 60 hp unit.

Both cranes use the standard 1.75 x 1.75 m tower system with 12-, 6- and 3-m-long sections. Maximum freestanding height is 50.1 m. To increase it, Jaso is developing the crane to fit the 2.16 m tower system for hook heights of nearly 83 m.

For the base, Jaso is offering cruciform types 4.5 x 4.5 m and 6 x 6 m, for maximum hook heights of 48.1 and 54.0 m respectively.

To simplify assembly, the heaviest component is the slewing platform with tower head at 6.7 t. Combining these two minimises the number of transport units.

New with these cranes is the Eco mode system. In normal mode the crane runs on full power, while switching to Eco mode can provide 75% of the power. The Super Eco mode works with 50% of the normal power consumption. It allows a crane with a bigger hoist motor to also work on less current. This helps on sites with restricted power supply.

Eco and Super Eco modes reduce the hoist speed but only when hoisting up. Lowering the hook is at same speed as when working in normal mode.

The new Jaso J200.12 and J200.10 flat-top tower cranes are available in Europe, Australia, Asia, the Middle East, North America and South America.