Products  › UNIC Mini-Crawler Crane > UR-W546C1AR
UR-W546C1AR

Compact, easy operation and further powerful

W546C1AR Options and Accessories
  • Turn Over Prevention Device
    When the stability decreases, the Turn Over Prevention Device allows the alarm buzzer to beep continuously - "Beeee" - and automatically stops the crane operation.
  • Radio remote control
    This permits the operator to have on-the-spot hand control of lifting operations by remote control via radio waves at safe distances. It ensures safe, accurate one-man operation-with energy saving.
  • Automatic hook stow system
    Controlling stowing is very easy with switch operation from the operating panel.
 
Specifications
Engine Type Gasoline engine
Capacity 4.0t at 2.5 m
Working Radius 0.66 m to 15.52 m
Hook Height above ground level (Approx) Max 16.0 m
Hook Height below ground level (Approx) Max 20.0 m with 4-part line
Boom Length Min 3.93 m to Max 15.71 m
Boom Extending Speed 11.78 m / 35.0 sec
Boom Raising Speed 0° to 80° / 18 sec
Boom Section 6 Section box beam type telescoping boom
Wire Rope Construction: XP IWRC 6 x WS (26) O/O
Diameter and Length: 8.0 mm x 91.5 m / Breaking Strength: 46.8kN {4,770 Kgf}
Winch Hydraulic motor driven, worm gear reduction, spur gear reduction, and self-locking brake (supported by ball bearings)
Winch Speed (Single Line) 44.0 m / min at 4th Layer
Hook Speed (4 part Line) 11.0 m / min at 4th Layer with 4-part line
Hock Block 4.0t Capacity with 2 Sheaves and Safety Latch
Swing (Slewing) Hydraulic motor driven, worm gear reduction, spur gear reduction, and worm self-locking brake (supported by ball bearings)
Slewing Range 360° Continuous Rotation on a ball bearing race
Slewing Speed 2.5 rpm
Outriggers
Horizontal:
Vertical:
A double acting hydraulic cylinder, direct pushing type (directly connected with hydraulic automatic lock device)
A double acting hydraulic cylinder, direct pushing type (directly connected with hydraulic automatic lock device)
Oil Tank 70 Liter Capacity
Safety Devices
  1. Pressure relief valve for hydraulic circuit
  2. Counterbalance valves for boom raising and boom telescoping cylinders
  3. Pilot-operated check valves for outrigger cylinders (Horizontal)
  4. Double pilot-operated check valves for outrigger cylinders (Vertical)
  5. Boom angle indicator with load indicator
  6. Hook safety latch
  7. Automatic mechanical brake for winch
  8. Automatic stop for overwinding
  9. Overwinding alarm
  10. Automatic stop for leaving minimum wire rope
  11. Emergency stop button
  12. Inter-lock device of crane and crawling levers
  13. Inter-lock device of crane and outriggers
  14. Level
  15. Overloading alarm
  16. Load Meter


Crawling Gear
Crawling Endless rubber crawler
Crawler 300 X 52.5 X 88
Tread Length 1750 mm
Ground Contact Pressure 45.1 kPa {0.46 kgf/cm2}
Crawling Speed 0~3.0 km/h, forward/reverse
Hill Climbing Ability 23°
Engine 18.0 kW (24.5ps)/2100rpm, Rated output
Steering Hydraulic drive independent of left/right
Parking Brake Disk brake with hydraulic motor built-in
Starter Starter motor
Fuel Tank 40 Litres capacity


Measurements & Weight
Total Width 1,380 mm
Total Height 2,035 mm
Total Length 4,870 mm
Gross Weight 4,190 kg


Rated Loads (Unit : kg)
All Booms Retracted and Second Stage Extended
Working Radius (m) 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.14
Outrigger Extended to Maximum 4.0 3.45 3.0 2.55 2.25 2.0 1.8 1.63 1.6
Outrigger Extended Not to Maximum 4.0 3.45 3.0 2.4 2.0 1.65 1.35 1.1 1.0
Third Stage Extended
Working Radius (m) 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.53
Outrigger Extended to Maximum 3.0 2.55 2.25 2.0 1.8 1.65 1.5 1.35 1.2 1.1 0.98
Outrigger Extended not to Maximum 3.0 2.4 2.0 1.65 1.35 1.1 0.9 0.75 0.6 0.5 0.45
Fourth Stage Extended
Working Radius (m) 4.0 4.3 4.5 5.0 5.5 6.0 7.0 8.0 9.0 10.0 10.9
Outrigger Extended to Maximum 2.0 2.0 1.88 1.68 1.5 1.35 1.15 1.0 0.9 0.78 0.65
Outrigger Extended not to Maximum 2.0 2.0 1.8 1.6 1.35 1.1 0.75 0.5 0.4 0.3 0.25
Fifth Stage Extended
Working Radius (m) 5.0 5.5 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.2
Outrigger Extended to Maximum 1.1 0.95 0.86 0.71 0.6 0.55 0.5 0.45 0.4 0.35
Outrigger Extended not to Maximum 1.0 0.9 0.8 0.65 0.5 0.4 0.3 0.25 0.2 0.15
Sixth Stage Extended
Working Radius (m) 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 15.52
Outrigger Extended to Maximum 0.86 0.71 0.6 0.55 0.5 0.44 0.39 0.33 0.27 0.21 0.16
Outrigger Extended not to Maximum 0.5 0.4 0.35 0.3 0.25 0.21 0.18 0.15 0.13 0.11 0.1

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