Mobile tower crane

Spierings SK488-AT4

The Spierings SK488-AT4 is an 8 tonne mobile tower crane with a 40m jib, supplied with an operator for crane hire or as part of a contract lift.

Maximum capacity: 8 tonnes
Jib length: 40m
Load at jib tip: 2.1 tonnes at 40m6.90m x 6.70m outrigger base
Maximum hook height: 44.2m

Download the Spierings SK488-AT4 spec sheet

Spierings SK488-AT4 specification sheet
Load charts, working range diagrams, dimensions and axle loads. PDF, 3 pages, 0.6MB.

Download the spec sheet

Specification

Item	Specification
Manufacturer	Spierings
Model	SK488-AT4
Type	Mobile tower crane
Maximum capacity	8 tonnes, up to 12.76m radius (6.90m x 6.70m outrigger base, jib horizontal)
Jib length	40m maximum radius
Load at jib tip	2.1 tonnes at 40m on the 6.90m x 6.70m outrigger base; 1.35 tonnes at 40m on the 6.90m x 5.15m base (jib horizontal)
Maximum hook height	44.2m with the jib luffed to 30 degrees (at 34.8m radius); 25m with the jib horizontal
Jib positions	Horizontal, or luffed to 30 degrees; luffing controlled from the crane cab or via remote control
Tower	Height under the jib 26.8m (jib horizontal)
Counterweight	9,300kg full counterweight
Weight and axle loads	48 tonnes overall weight
Outriggers	Support bases 6.90m x 6.70m and 6.90m x 5.15m; maximum outrigger loading 350kN; outrigger foot 750 x 600mm; pressure under foot 0.8 N/mm2
Control and safety	All motions with hydraulic proportional controls; 360 degrees continuous slewing with outriggers out and down; operation allowed up to wind force 7 Bf (17m/sec); crane to be folded in above wind force 9 (21m/sec) or when not in use for a longer period; operating temperature -15 to 40 degrees C
Ownership	Supplied. Our owned cranes are the electric pick and carry machines

Specifications are taken from the manufacturer published specification sheet for this model and are given as a guide only. Machines vary by build, options and configuration, and figures can change without notice. Nothing on this page forms part of a contract or a lift plan: the crane, its configuration and its load chart are confirmed when we quote and plan your lift.