A used Tadano GR Series rough terrain crane can be a practical choice for construction, industrial maintenance, infrastructure and lifting work where maneuverability and off-road capability matter. However, choosing the correct GR model requires more than checking the maximum tonnage. A crane rated at 25 tonnes cannot lift 25 tonnes at every boom length or working radius.
Before buying, define the load weight, lifting radius, required hook height, available setup space and ground conditions. Then identify the GR model and generation that can perform that lift within its rated load chart. Used buyers should also check the boom, wire ropes, winches, hook block, outriggers, hydraulic system, slewing system, AML safety system, tires, steering, brakes and maintenance information. This guide explains how overseas buyers can evaluate a Tadano GR Series crane before purchasing from Japan.
What Is the Tadano GR Series?
The Tadano GR Series is a family of rough terrain cranes.
Unlike a truck crane with separate carrier and crane operating positions, a rough terrain crane uses one cab for both travel and crane operation.
Tadano describes its rough terrain cranes as machines designed for maneuverability on uneven ground and in confined jobsites. Current models use all-wheel-drive and steering-related systems depending on the machine specification.
The GR range covers several capacity classes, so the model family should never be treated as one machine.
Current Tadano GR Models Cover a Wide Lifting Range
Current Japanese-market examples include:
| Model | Maximum Crane Capacity | Main Boom Length | Main Boom Maximum Lifting Height |
|---|---|---|---|
| GR-160N | 16.0 t | 6.5–28.0 m | 28.9 m |
| GR-250N | 25.0 t | 9.35–30.5 m | 31.3 m |
| GR-600N | 60.0 t | 10.3–41.2 m | 42.6 m |
| GR-700N | 70.0 t | 9.8–44.0 m | 45.2 m |
| GR-1000N | 100.0 t | 10.2–48.0 m | 48.7 m |
These figures are current Japanese-market examples. Used GR cranes may come from older generations with different boom designs, jibs, engines, safety systems, dimensions and lifting performance.
Specifications vary by model year and configuration. Exact specifications should be confirmed for each individual machine.
Maximum Crane Capacity Is Not the Same as Your Usable Lift
This is one of the most important points for a first-time crane buyer.
A model name or maximum capacity tells you only part of the lifting capability.
Actual rated capacity changes according to factors such as:
- Boom length
- Working radius
- Boom angle
- Outrigger extension
- Jib configuration
- Number of wire-rope parts
- Counterweight configuration where applicable
- Operating direction
- Individual model specification
For example, the current GR-250N is rated at 25,000 kg at a 3.5 m radius with its 9.35 m boom in the specified configuration.
That does not mean it can lift 25 tonnes at a 20 m or 25 m radius.
Always use the correct manufacturer load chart for the exact crane.
Start With the Lift You Actually Need to Perform
Before searching for a GR model, write down:
- Maximum load weight
- Required working radius
- Required hook height
- Available outrigger space
- Ground conditions
- Expected lifting frequency
- Whether a jib is required
These figures are more useful than saying only, “I need a 25-ton crane.”
Choose a Smaller GR Class When...
- The loads are relatively moderate.
- The work area is restricted.
- Transport size matters.
- Most lifts are performed at shorter radii.
- Large boom reach is not required.
Models in the GR-160N or GR-250N direction can fit smaller lifting projects where their actual load charts meet the work requirement.
Move Toward a Larger GR Class When...
- Loads are heavier.
- Greater working radius is required.
- Higher structures must be reached.
- Longer main boom length is required.
- The crane must maintain useful capacity farther from the machine.
A larger crane may provide more capacity and reach, but it also needs more setup area, larger transport capacity and greater ownership cost.
GR-250N: A Useful Example of a 25-Tonne Japanese RT Crane
The current Japanese GR-250N provides a useful reference for understanding this class.
Tadano lists:
- Maximum crane capacity: 25,000 kg × 3.5 m
- Main boom length: 9.35–30.5 m
- Maximum boom lifting height: 31.3 m
- Maximum boom working radius: 27.9 m
- Maximum outrigger spread: 6.6 m
- Overall travel length: 11,530 mm
- Overall travel width: 2,620 mm
- Overall travel height: 3,475 mm
- Gross vehicle weight: 25,495 kg
The same official specification also lists several intermediate outrigger extension positions.
This is important for jobsites where the crane cannot always extend its outriggers fully.
Outrigger Configuration Can Decide Whether the Lift Is Possible
A rough terrain crane needs a suitable setup area.
Before buying, ask whether your normal jobsites have enough width for the required outrigger extension.
Inspect the used crane's outriggers for:
- Beam condition
- Hydraulic cylinders
- Cylinder rod damage
- Oil leakage
- Outrigger pads or floats
- Extension movement
- Position sensors where fitted
- Cracks or structural repairs
Test each outrigger where practical.
A crane with strong boom performance has little value if its stabilization system cannot operate correctly.
Inspect the Main Boom Carefully
The telescopic boom is a critical structural component.
Review:
- Boom sections
- Visible dents
- Cracks
- Previous welding
- Corrosion
- Boom wear pads
- Extension and retraction movement
- Hydraulic cylinder leakage
- Boom head condition
Tadano publishes dedicated service information for inspection of rough terrain crane boom structures, including base-boom inspection.
Structural damage should never be judged only by paint condition.
Extend and Retract the Boom During Inspection
If an operational test is possible, operate the boom through its available range.
Look for:
- Jerky extension
- Uneven section movement
- Abnormal noise
- Hydraulic leakage
- Unexpected stopping
- Error messages
Do not exceed manufacturer operating limits during any test.
Check the Jib and Its Components
Some GR cranes use a jib to increase lifting height or reach.
Confirm whether the jib is:
- Included
- Complete
- Correct for the model
- Structurally sound
- Able to deploy correctly
Inspect pins, locking mechanisms, sheaves and hydraulic or assist components where fitted.
A crane photographed with a jib does not automatically mean every related component is included in the sale.
Inspect the Wire Rope
The wire rope is a safety-critical lifting component.
Check for:
- Broken wires
- Kinking
- Flattening
- Corrosion
- Abnormal wear
- Birdcaging or deformation
- Condition near rope termination points
Tadano publishes specific service information for winch wire-rope inspection and rope-socket areas.
A visual check is useful, but rope acceptance and replacement decisions should follow the applicable manufacturer requirements and local crane regulations.
Inspect the Winch and Sheaves
Check:
- Main winch
- Auxiliary winch where fitted
- Drums
- Sheaves
- Bearings
- Hydraulic motors
- Braking function
- Unusual noise
Tadano's current service information specifically includes inspection guidance for winch sheaves.
During a controlled operational check, the winch should operate smoothly without unexplained slipping or abnormal noise.
Inspect the Hook Block
Review the hook and hook block for:
- Deformation
- Cracks
- Hook latch condition
- Wear
- Sheave condition
- Identification markings
Also confirm that the hook block and number of rope parts are appropriate for the intended lifting configuration.
AML Is a Critical Part of a Modern Tadano Crane
Tadano uses its Automatic Moment Limiter, or AML, to monitor important crane operating conditions.
Depending on the model and generation, the system can use information such as:
- Boom angle
- Boom length
- Working radius
- Actual load
- Rated capacity
- Outrigger condition
- Rope-part configuration
- Slewing position
Newer machines use later AML generations with larger displays and additional functions.
Older GR cranes may use different AML systems.
Do Not Buy a Crane With Safety-System Faults Without Understanding the Cause
During inspection, confirm that:
- The AML display powers up.
- Sensors report plausible values.
- Boom angle and length information respond correctly.
- Outrigger status is recognized where applicable.
- Warning lamps and alarms operate.
- No unexplained safety-system error remains active.
Tadano specifically publishes service guidance for AML pre-operation checks and correct working-state registration.
The AML is an operator aid. It does not replace correct setup, load-chart use or safe crane operation.
Check the Slewing System
The crane upper structure rotates on a slewing bearing.
Inspect:
- Slewing movement
- Unusual play
- Abnormal noise
- Slewing brake behavior
- Hydraulic leakage
- Bearing mounting area
Tadano's service information includes periodic inspection guidance for slewing-bearing mounting bolts.
Structural movement or unexplained noise deserves further investigation.
Inspect the Hydraulic System
A GR crane relies heavily on hydraulics for lifting operations.
Review:
- Boom elevation cylinder
- Boom telescoping functions
- Outrigger cylinders
- Winch hydraulic system
- Slewing hydraulics
- Hoses
- Pumps
- Oil leaks
Tadano also publishes service guidance concerning hydraulic oil deterioration and hydraulic-hose inspection.
Leaks should be investigated rather than simply cleaned before sale.
The Carrier Section Matters Too
A rough terrain crane must travel around the worksite and may also travel on public roads where legally permitted.
Check:
- Engine
- Transmission
- Axles
- Steering
- Brakes
- Suspension
- Tires
- Lights
- Warning systems
A crane can have a good boom and still require expensive carrier repairs.
Test All Steering Modes Available on the Machine
Tadano rough terrain cranes can use multiple steering modes depending on model.
The current GR-250N specification, for example, lists different turning radii for four-wheel and two-wheel steering.
The current GR-700N provides eight-wheel and front-four-wheel steering data.
Test the modes fitted to the individual crane and check for:
- Uneven steering response
- Warning messages
- Hydraulic leakage
- Abnormal tire position
- Unusual noise
Inspect the Tires
Rough terrain crane tires are large and expensive.
Check:
- Tread
- Cuts
- Sidewall damage
- Cracking
- Uneven wear
- Correct size
- Mismatched tires
- Wheel condition
Tadano publishes dedicated pre-operation inspection information for rough terrain crane tires.
Check the Brakes Before Thinking About Road Speed
Some current Japanese GR models list maximum travel speeds around 49 km/h.
That does not mean an older used crane should be judged from speed alone.
Inspect:
- Service brake operation
- Parking brake
- Brake hoses
- Fluid condition where applicable
- Warning systems
Tadano has published service information addressing brake hoses, brake fluid and carrier brake corrosion.
Engine Hours and Mileage Tell Different Parts of the Story
A mobile crane may have both crane working hours and travel mileage.
Neither figure should be used alone.
Compare available readings with:
- Maintenance history
- Winch condition
- Boom wear
- Hydraulic condition
- Carrier condition
- Tire wear
- Previous type of work
A crane with modest mileage may still have performed many lifting hours on one site.
Conversely, a crane that moved frequently between projects may have greater carrier wear.
Generation Differences Matter on GR Series Cranes
Used Japanese GR listings can include several generations.
Tadano's official Japanese CAD archive includes examples such as:
- GR-250N-4
- GR-300N-1
- GR-350N-1
- GR-500N-1
- GR-500N-2
- GR-600N-1
- GR-600N-2
The GR-500N examples alone show differences in boom length, jib and outrigger configuration across specifications.
Therefore, identify the complete model and specification number whenever possible.
Newer GR Safety and Control Features Should Not Be Assumed on Older Cranes
Current Tadano GR cranes can include systems such as:
- Later-generation AML
- Camera systems
- Outrigger monitoring
- Telematics
- Fuel-saving controls
- Additional operator displays
These features vary by model, market, year and option package.
Do not advertise or purchase an older GR crane as having a feature until the individual machine is confirmed.
Think About Local Parts and Crane Support
A crane is more specialized than many earthmoving machines.
Before importing, investigate support for:
- Wire ropes
- Sheaves
- Hydraulic seals
- Outrigger parts
- AML sensors
- Electrical components
- Winch components
- Engine service parts
- Tires
Also consider whether local technicians can diagnose the generation of Tadano crane you plan to buy.
Confirm Local Crane Regulations Before Purchase
Crane registration, inspection, operator licensing and road-use requirements vary between countries.
Before importing, confirm requirements at the destination.
A crane that can physically perform the lift still needs to meet the relevant local legal and safety requirements before operation.
Shipping a Rough Terrain Crane from Japan
Transport planning should begin before purchase.
Confirm:
- Overall length
- Overall width
- Overall height
- Gross vehicle weight
- Axle weights where relevant
- Jib position
- Hook block and accessory arrangement
- Counterweight configuration where applicable
For example, Tadano lists the current GR-250N at 11,530 mm long and 25,495 kg gross vehicle weight. The current GR-700N is 12,765 mm long and 41,295 kg gross vehicle weight.
The difference has clear implications for inland and international transport.
RORO, flat rack, breakbulk or another arrangement may be considered depending on the individual crane, destination, port, shipping line and current conditions.
No one shipping method applies to every Tadano GR crane.
A Practical Tadano GR Used Buyer Checklist
- Lift Requirement: Confirm load weight, radius and required hook height.
- Model: Identify the complete GR designation and generation.
- Load Chart: Confirm that the exact crane can perform the intended lift.
- Boom: Inspect sections, wear, cracks and telescoping operation.
- Jib: Confirm condition, completeness and inclusion where required.
- Wire Rope: Check wear, deformation and corrosion.
- Winch: Test smooth operation and inspect drums and sheaves.
- Hook Block: Check structure, latch and sheaves.
- Outriggers: Test extension, cylinders, sensors and pads.
- AML: Confirm operation of the safety monitoring system.
- Slewing: Check bearing movement, brake and abnormal play.
- Hydraulics: Inspect cylinders, hoses, pumps and leakage.
- Engine: Review starting, smoke, leaks and warnings.
- Carrier: Test transmission, steering and brakes.
- Tires: Check wear, cuts, age-related cracking and matching.
- Hours / Mileage: Compare both with physical condition.
- Maintenance: Review records where available.
- Local Support: Check parts, diagnostics and qualified crane service.
- Regulations: Confirm destination requirements.
- Shipping: Confirm dimensions and weight before purchase.
Buying a Used Tadano GR Rough Terrain Crane from Japan
Japanese used machinery can include Tadano GR rough terrain cranes from several capacities and generations.
You can check current Japanese used machinery available at EVERYCAR.jp. Inventory changes regularly, so a particular GR model should not be assumed to remain available.
When making an inquiry, useful information includes the preferred Tadano GR model or required crane capacity, maximum load, working radius, lifting height, budget and destination.
For wider guidance on machine selection, inspection, operating hours, shipping and other used-equipment decisions, visit the Japanese Used Machinery & Heavy Equipment Guide.
Choose the Crane From the Lift, Not From the Tonnage Label
The best Tadano GR model is the one that can perform your real lift at the required radius and height while fitting the available setup area.
Start with the load, radius, boom requirement and outrigger space. Then select the appropriate GR capacity and generation.
After finding the correct model class, inspect the individual used crane. Boom condition, wire ropes, winches, outriggers, AML, hydraulics, slewing system, carrier condition, maintenance and safety equipment can all change the real value of the machine.
If you are looking for a used Tadano GR rough terrain crane from Japan, you can contact EVERY with your preferred model or required capacity, load weight, working radius, lifting height, budget and destination. Exact specifications, lifting performance, equipment and condition should be confirmed for each individual crane before purchase.
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