JASO’s first Flat-Top cranes

By MEq July 12, 2021 10:43

JASO is expanding its range of tower cranes with the first Flat-Top cranes, the J200.10 and J200.12, with load capacities of 10 tonnes and 12 tonnes respectively, and a maximum reach of 67.5 meters. These Flat-Top crane models are aimed to renew the T Series of the Top Line range, which up to now had only consisted of High-Top cranes. Currently, JASO is one of the few advocates of the Low Top crane design, which combines the benefits of High Top and Flat Top designs.

The new J200’s fills a niche between the lower tonnage and higher tonnage series Low Tops and has been primarily developed for the European and American markets to meet the demand for lightweight construction cranes which can also lift smaller precast concrete modules up to 10 or 12 tonnes, or just to carry out concrete pours.

The J200.12 provides tip loads of a 1.7-tonne with a single trolley in 2-part reeving mode (ST-SR) and a 1.5-tonne at 67.5 meters when in a 4-part line (ST-DR). In addition, with a special 2-part line trolley, the max tip load is 1.9 tonne.
The J200.10 also has an SR-DR trolley both single and double reeving. Therefore, this crane has a 2-tonne tip load in ST-SR reeving mode and a 1.8-tonne tip load in SR-DR reeving mode at a 67.5-meter radius.

Both models can be mounted with a minimum boom length of 30 meters. With intervals of 2.5-meter sections giving a maximum length of 67.5 meters. The swing radius with the full boom is 14.9 meters while for booms of 52.5 meters and lower, the swing radius can be reduced to 12.9 meters.

As usual with new cranes designed by JASO, both the counterweight slabs and the weights of the base ballast are of the lay-flat type, which makes the handling easier as they do not need to be flipped over. Optionally, overhead counterweights can be steel-framed to add more safety.

The J200.12 model comes as standard with a 60 hp hoist, giving a maximum speed of 152 meters a minute. Optionally, an 88 hp unit can provide speeds up to 225 meters a minute. The rope capacity for this crane is 1,378 meters, and hoist drums can be specified with Lebus grooving. As standard, hoists for the J200.10 are 33 hp, with 60 hp as an option.
Both models use the standard 1.75 x 1.75-meter tower system with either 12.6-meter-long sections or 3-meter-long sections.

The maximum free-standing height is 50.1 meters. To increase this JASO is developing the crane to fit the 2.16-meter tower system for hook heights of nearly 83 meters. For easier assembly, the heaviest set does not exceed 6.7-tonne. As a result, transportation has been optimized by reducing the number of transport units needed.

One of the greatest innovations is the ECO Mode system, which allows the crane to work in three modes:
● Full Power
● ECO Mode (uses 75% of normal power consumption)
● SUPER-ECO Mode (uses 50% of normal power consumption).

Both ECO Mode and SUPER-ECO Mode do not affect the speed of the crane when lowering. In short, key features of this crane include versatility for multiple applications, optimization for component weight, plus quick and easy assembly in congested urban areas. A wide range of performance characteristics is available from micro speed and proportional slew movements to high operating speed and minimal power consumption.