Mobile tower crane

Spierings SK498-AT4

The Spierings SK498-AT4 is an 8 tonne, four axle mobile tower crane with a 44m jib, supplied with an operator for crane hire or as part of a contract lift.

Maximum capacity: 8 tonnes
Jib length: 44m
Load at jib tip: 1.9 tonnes at 44m6.925m x 6.85m outrigger base
Maximum hook height: 46.5mJib luffed 30 degrees
Axle lines: 4

Download the Spierings SK498-AT4 spec sheet

Spierings SK498-AT4 specification sheet
Load charts, working range diagrams, dimensions and axle loads. PDF, 7 pages, 2.0MB.

Download the spec sheet

Specification

Item	Specification
Manufacturer	Spierings
Model	SK498-AT4
Type	Mobile tower crane
Maximum capacity	8 tonnes, up to 12.85m radius on the 6.925m x 6.85m outrigger base (9.27m on the 6.925m x 5.15m base); maximum load moment 103tm
Jib length	44m maximum radius
Load at jib tip	1.9 tonnes at 44m on the 6.925m x 6.85m outrigger base; 1.2 tonnes on the 6.925m x 5.15m base (jib horizontal)
Maximum hook height	46.5m at 38.3m radius with the jib luffed 30 degrees; 25.3m with the jib horizontal
Jib positions	Horizontal, or luffed to 30 degrees
Tower	Height under the jib 27.3m (jib horizontal)
Counterweight	9,500kg crane counterweight
Weight and axle loads	48 tonnes overall weight
Outriggers	Support bases 6.925m x 6.85m and 6.925m x 5.15m; maximum outrigger force 360kN; outrigger support pads 750 x 600mm; support plates 1100 x 1100mm
Axle lines	4: axle 1 steer; axle 2 steer and driven; axle 3 driven; axle 4 steer and driven
Tyres and width	445/75 R22.5
Engine	Carrier: DAF MX 300 (12.9 litre) Euro IV diesel, 300kW at 1,900rpm, 2,050Nm at 1,500rpm
Crane drive	John Deere 4045HF285-T3 diesel, 104kW at 2,400rpm, 387Nm at 1,500rpm
Transmission	ZF 12AS2300 automatic with intarder; Steyr VG2001/396 transfer box with road and off-road gears; maximum speed 82km/h, minimum 1.6km/h
Control and safety	All motions with hydraulic proportional controls, from the crane cab or by remote control; operation allowed up to wind force 8 Bf (17m/sec); crane to be folded in at wind force 9 Bf (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.