The Tadano GR-500XL is a hydraulic rough terrain crane with a 50-ton (45.4 metric tons) capacity. It is designed for lifting operations in various conditions, offering a range of features for performance, control, and safety.
Function Description
The crane's primary function is lifting and maneuvering heavy loads on rough terrain. It achieves this through a powerful hydraulic system, a multi-section telescoping boom, and a robust carrier. The crane can operate in different steering modes (2-wheel front, 4-wheel coordinated, 4-wheel crab) and drive configurations (4x2 front drive, 4x4 front and rear drive) to navigate diverse job sites.
Important Technical Specifications
Boom:
- Type: Four-section, full power synchronized telescoping boom.
- Construction: Round box construction with four sheaves (17-5/16" / 0.44m root diameter) at the boom head.
- Length: 35.1' to 113.9' (10.7m to 34.7m).
- Synchronization System: Telescope cylinder, two extension cables, and retraction cables.
- Holding Valve: Hydraulic cylinder fitted with a holding valve.
- Wear Pads: Boom telescope sections supported by wear pads (vertical and horizontal).
- Extension Speed: 78.8' in 72 seconds.
Boom Elevation:
- Cylinder: Double-acting hydraulic cylinder with holding valve.
- Elevation Range: -0.8° to 81°.
- Controls: Combination controls for hand or foot operation.
- Features: Boom angle indicator, automatic speed reduction, and soft stop function.
- Raising Speed: 20° to 60° in 27 seconds.
Jib:
- Type: Two-stage bi-fold lattice type.
- Offset Angles: 5°, 25°, or 45° (tilt type).
- Sheave: Single sheave (15-5/8" / 0.396m root diameter) at the head of both jib sections.
- Storage: Stored alongside the base boom section.
- Length: 28.9' (8.8m) or 50' (15.2m).
- Mounting/Stowing: Assistant cylinders, controlled from the right side of the superstructure.
- Pins: Self-stowing jib mounting pins.
Auxiliary Lifting Sheave (Single Top):
- Type: Single sheave (15-5/8" / 0.396m root diameter).
- Mounting: Mounted to the main boom head for single line work (storable).
Anti-Two Block:
- Device: Pendant type over-winding cut-out device.
- Warning System: Audio-visual (FAILURE lamp/BUZZER).
Slewing:
- Motor: Hydraulic axial piston motor through planetary slewing speed reducer.
- Rotation: Continuous 360° full circle slewing on ball bearing turn table at 2.7 min⁻¹ {rpm}.
- Brake: Manually locked/released slewing brake.
- Slewing Lock: 360° positive slewing lock for pick and carry and travel modes, manually engaged in cab.
- System: Twin slewing system (free slewing or lock slewing) controlled by a selector switch on the front console.
Hoist:
- Type: Variable speed with grooved drum.
- Drive: Hydraulic axial piston motor through speed reducer.
- Functionality: Power load lowering and raising.
- Brakes: Automatic brake (neutral brake) and counterbalance valve.
- Indicators: Cable follower and drum rotation indicator.
Drum:
- Dimensions: Grooved 14-1/4" (0.362m) root diameter x 23-5/8" (0.6m) wide.
- Wire Rope: 633' of 3/4" diameter rope (193m of 19mm).
- Drum Capacity: 997' (304m) in 7 layers.
- Maximum Line Pull (available): 16,500 lbs (7,480kg).
- Maximum Line Speed: 450 FPM (137m/min) at the 5th layer.
Wire Rope:
- Type: Warrington seal wire, extra improved plow steel, preformed, independent wire rope core, right regular lay.
- Size: 3/4" (19 mm) 6x31 class.
- Braking Strength: 54,700 lbs (24,800 kg).
Hook Blocks:
- 50 ton (45.4 metric ton): 5 sheaves with swivel hook block and safety latch.
- 25 ton (22.7 metric ton): 2 sheaves with swivel hook block and safety latch.
- 6.2 ton (5.6 metric ton): Weighted hook ball with swivel and safety latch.
Hydraulic System:
- Pumps: Two variable piston pumps for crane functions; tandem gear pump for steering, slewing, and optional equipment. Powered by carrier engine. Pump disconnect engaged/disengaged by rotary switch from operator's cab.
- Control Valves: Multiple valves actuated by pilot pressure with integral pressure relief valves.
- Reservoir: 148 gallon (560 lit.) capacity with external sight level gauge.
- Filtration: BETA10=10 return filter, full flow with bypass protection, located inside the hydraulic reservoir, accessible for easy replacement.
- Oil Cooler: Air-cooled fan type.
Cab and Controls:
- Operation: Both crane and drive operations can be performed from one cab mounted on the rotating superstructure.
- Construction: Left side, 1-man type, steel construction with sliding door access and safety glass windows opening at the side.
- Window Controls: Powered door window. Windshield and roof glass windows are shatter-resistant.
- Steering: Tilt-telescoping steering wheel.
- Control Levers: Adjustable control lever stands for slewing, boom elevating, boom telescoping, and hoist. Can change neutral positions and tilt for easy access.
- Seat: 3-way adjustable operator's seat with high back, headrest, and armrest.
- Throttle: Engine throttle knob.
- Foot Controls: Boom elevating, boom telescoping, service brake, and engine throttle.
- Climate Control: Hot water cab heater and air conditioning.
- Dash-mounted Controls: Engine start/stop, monitor lamps, cigarette lighter, drive selector switch, parking brake switch, steering mode select switch, power window switch, pump engaged/disengaged switch, slewing brake switch, outrigger controls, free slewing / lock slewing selector switch, eco mode switch, and ashtray.
- Instruments: Torque converter oil temperature, engine water temperature, air pressure, fuel, speedometer, tachometer, hour meter, odometer/tripmeter. Hydraulic oil pressure monitored and displayed on the AML-C display panel.
Carrier Specifications:
- Type: Rear engine, left-hand steering, driving axle 2-way selected by manual switch, 4x2 front drive, 4x4 front and rear drive.
- Frame: High tensile steel, all-welded mono-box construction.
- Transmission: Electronically controlled full automatic transmission, torque converter driving full powershift with driving axle selector. 6 forward and 2 reverse speeds, constant mesh. 4 speeds - high range - 2-wheel drive; 4 speeds - low range - 4-wheel drive.
- Travel Speed: 31 mph (50 km/h).
- Axle: Front: Full floating type, steering and driving axle with planetary reduction. Rear: Full floating type, steering and driving axle with planetary reduction and non-spin rear differential.
- Steering: Hydraulic power steering controlled by steering wheel. Three steering modes: 2-wheel front, 4-wheel coordinated, and 4-wheel crab.
- Suspension: Front: Semi-elliptic leaf springs with hydraulic lockout device. Rear: Semi-elliptic leaf springs with hydraulic lockout device.
- Brake Systems: Service: Air over hydraulic disc brakes on all 4 wheels. Parking/Emergency: Spring applied-air released brake acting on input shaft of front axle. Auxiliary: Electro-pneumatic operated exhaust brake.
- Tires: 23.5-25(OR).
- Outriggers: Four hydraulic, beam and jack outriggers. Vertical jack cylinders equipped with integral holding valve. Each outrigger beam and jack controlled independently from cab. Beams extend to 22' 11-5/8" (7.0 m) center-line and retract to within 9' 9-3/8" (2.98 m) overall width with floats. Outrigger jack floats are attached. Controls and sight bubble located in superstructure cab. Four outrigger extension lengths provided with corresponding "RATED LIFTING CAPACITIES" for crane duty in confined areas. Min. Extension: 8' 1-5/8" (2.48m) center to center; Mid. Extension: 16' 4-7/8" (5.0m) center to center; Mid. Extension: 21' 3-7/8" (6.5m) center to center; Max. Extension: 22' 11-5/8" (7.0m) center to center. Float size (Diameter): 1'7-11/16" (0.5m).
Engine:
- Model: Cummins QSB6.7 [Tier 4].
- Type: Direct injection diesel, 6 cylinders, 4 cycle, turbo-charged and after-cooled.
- Bore x Stroke: 4.212 x 4.882 in. (107 x 124 mm).
- Displacement: 409 cu. in. (6.700 liters).
- Air Inlet Heater: 24 volt preheat.
- Air Cleaner: Dry type, replaceable element.
- Oil Filter: Full flow with replaceable element.
- Fuel Filter: Full flow with replaceable element.
- Fuel Tank: 79.2 gal. (300 liters), right side of carrier.
- Cooling: Liquid pressurized, recirculating by-pass.
- Radiator: Fin and tube core, thermostat controlled.
- Fan: Suction type, 9-blade, 28 in. (711 mm) dia.
- Starting: 24 volt.
- Charging: 24 volt system, negative ground.
- Battery: 2-120 amp. hour.
- Air Compressor: 17.0 CFM (481) at 2,400 rpm.
- Horsepower (kW): Gross 270 (201) at 2,000 rpm.
- Torque, Max. ft-lb (Nm): 730 (990) at 1,500 rpm.
- Capacities (gal./liters): Cooling water: 7.4 (28); Lubrication: 4.0 (15); Fuel: 79.2 (300); DEF: 10.0 (38).
Usage Features
- Tadano Electronic Load Moment Indicator System (AML-C): Provides critical operational data including boom position, outrigger state, load radius, rated lifting capacities, actual loads, and ratio of actual load moment to rated load moment. It also features automatic speed reduction and slow stop functions for boom elevation and slewing, working condition register switch, load radius/boom angle/tip height/slewing range preset function, external warning lamp, tare function, fuel consumption monitor, and drum rotation indicator (audible and visible). The AML-C monitors outrigger extended length and automatically programs the corresponding "RATED LIFTING CAPACITIES" table.
- Operator's Console: Right-hand console includes transmission gear selector and sight level bubble. Upper console includes working light switch, roof washer and wiper switch, emergency outrigger set-up key switch, jib equipped/removed select switch, eco mode switch, and air conditioning control switch, and slewing lock lever.
- Drive Modes: The carrier offers 4x2 front drive, 4x4 front and rear drive, and three steering modes (2-wheel front, 4-wheel coordinated, and 4-wheel crab) for optimal maneuverability.
- On-Rubber Operation: The crane can perform stationary and creep operations on rubber, with specific guidelines for boom positioning and load handling to ensure stability.
- Safety Features: Anti-Two Block device, automatic speed reduction and soft stop for boom, manually locked/released slewing brake, 360° positive slewing lock, automatic hoist brake, counterbalance valve, and AML-C warnings.
- Comfort and Ergonomics: The cab is designed for a single operator with a comfortable adjustable seat, tilt-telescoping steering wheel, and intuitive controls. Climate control (heater and A/C) ensures operator comfort in various weather conditions.
Maintenance Features
- Hydraulic System Filtration: The BETA10=10 return filter is located inside the hydraulic reservoir and is accessible for easy replacement, ensuring clean hydraulic fluid.
- Engine Filters: Replaceable elements for air, oil, and fuel filters simplify routine maintenance.
- Easy Access: The design allows for relatively easy access to key components for inspection and service.
- Monitoring System: The AML-C display panel provides real-time monitoring of critical engine and hydraulic parameters, aiding in early detection of potential issues.
- Manuals: Comprehensive Operation and Maintenance Manuals are provided to guide operators and technicians in proper use and upkeep.
To Next Page
Need help?
General
