Unic URW-506 mini crane

Combine working flexibility and heavy lifting power

The URW-506 offers an optimal combination of working flexibility and heavy lifting power. This crane is capable of lifting 3 tonnes at 3.4m or up to 4 tonnes with an optional 5 fall hook block.

As with all the UNIC spider crane models carrying a safe load indicator, the URW-506’s working area limitation device allows the operator to pre-define the working area giving greater control and safety in sensitive areas. On approaching these limits, function speeds are reduced and an audible alarm is given before operation stops.

Key featuresUnic URW 506 mini crane

Total width 1.4m
Max working radius 15.52m
Diesel powered and optional mains electric
Zero length increase with electric option
Operator control of outrigger extension
Intelligent voice warning system
Radio remote control as standard
Working area limitation
Slew limitation (optional)
Intelligent throttle activation for economy and ecology


Technical information

Electric motor – power6 litres petrol, 9 litres diesel

Column title Column title
 Crane capacity 3.0t x 3.4m (506-1 4.0t x 2.5m with 5 fall hook block)
Max working radius 15.52m
Max lifting height 16m (17.79m with fly jib, 18.46m with fixed hook)
Rope length (max) 20.52m (4 fall), 42.54m (2 fall), 86.57m (1 fall)
Dimensions (folded) 4870mm (l) x 1400mm (w) x 2035mm (h)
Weight (unladen) 4840kg (4990kg with electric option)
Point loadings due to the many variables involved, point loadings are only available on request
Hook speed (approx) 17m/min (with 4 layers and 4 falls)
Telescopic system – boom length 3.93 – 15.71m
Telescopic system – telescoping speed 11.78m/35 seconds
Telescopic system – boom type 6 section hydraulically telescoping boom, hexagonal box construction
Derricking angle/speed (approx) 0 – 80˚/18.0 seconds
Slewing angle/speed (approx) 360˚ (continuous) 2.5min rpm
Traction system – drive hydrostatic 2-speed, stepless forward and reverse
Traction system – travel speed 0 – 3km/h
Traction system – gradability 23˚
Traction system – track ground length 1750mm
Traction system – track ground pressure 45.1kPa (0.46kg/cm²)
Traction system – track width 300mm
Engine – manufacturer Mitsubishi / Yanmar
Engine – fuel diesel (electric dual power option)
Engine – maximum output 18kW (24.5PS) / 2100min rpm
Engine – starting method electric
Engine – tank capacity 40 litres
Electric motor – power 7.5kW
Electric motor – voltage 400v AC 50/60Hz
Standard equipment computer controlled moment limiter (safe load indicator), radio remote control, overwinding alarm, computer controlled intelligent voice warning system, multi-function operation by radio remote control, intelligent throttle activation, automatic hook stow, overload warning alarms, overload warning lamps, working area limitation
Optional equipment 1 fall hook block, 2 fall hook block, 5 fall hook block (URW-506-1), mains electric dual power (400v), low marking tracks, slew limitation, searcher hook small 500kg, searcher hook 700kg, fly jib 700kg with single part line, radio remote control with feedback display, data logging


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