05.01.2006

Spierings to launch seven axle crane

Spierings is developing a seven axle SK2400-AT7 self-erecting mobile tower crane. The new model, the first of which has been sold to Dutch based crane hirer Verschoor, will have lifting capacities almost double that of its current largest crane the six axle SK1265-AT6.

Much of the structure for the new crane has been taken from a design the company developed in 2001 for a possible crawler mounted model. That concept never saw the light of day due to a lack of demand.
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The New Spierings seven axle crane

However one of its key features was a shorter jib and larger counterweight with significantly higher lift capacities and these have now been incorporated into the SK2400-AT7.

The resulting crane will offer a lifting capacity of five tonnes at 42 metres radius and under hook height of 36 metres. Or can take the five tones up to 56 metres hook height. The maximum lifting capacity is 18 tonnes at around 13.5 metres radius and 36 metres height.
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The range diagram of Spierings new seven axle crane

The crane will also take nine tonnes to 22 metres radius at 45 metre hook height.

While the lift chart is preliminary, the company says that if it changes, it will be to the positive.

The chassis is very similar to the current six axle model, but with the extra axle located in front of the current front axle. Axle loads will be 12 tonnes.

The cranes overall length is just over half a metre more than the current flagship at 16.865 metres. Thanks to a shorter front end boom overhang.

The first units are unlikely to ship much before year end 2006, “the phone has hardly stopped since we announced this model on our new calendar” said Bob Bruijsten of Spierings. So far over 50 units of the company’s six axle unit have been shipped.