20 Ton Gantry Crane for Sale

Yuantai Crane offers a complete line of 20 ton gantry cranes for heavy lifting. These 20 ton gantry crane models handle loads up to 20 tonne and suit a range of industries. Each crane is built with durable steel girders, reliable hoists, and safety systems. Yuantai's 20 ton cranes come in several styles to match your needs, including single-girder, double-girder, semi-gantry, L-type, U-type, and truss designs. These models are used in outdoor yards, indoor factories, ports, and more. They feature certified quality, robust components, and options to customize span, height, controls, and other parameters.

20 Ton Gantry Crane Models

Yuantai Crane provides multiple 20 ton gantry crane models. Each is designed for specific applications:

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20 Ton Single Girder Hoist Gantry Crane

A Single Girder Hoist Gantry Crane has one main beam (girder) and travels on rails. It is a light-duty design but can be built to 20 ton capacity. This crane is compact and cost-effective for moderate loads. It is widely used in warehouses and yards where budgets or headroom are limited

20 Ton Semi Gantry Crane

A Semi Gantry Crane has one leg on the ground and one end fixed to an elevated runway. It combines bridge crane and gantry features. Semi gantries save space and cost by using a building structure on one side. Yuantai's semi gantry cranes can be made up to 20 tons. They are compact and flexible, ideal for workshops or warehouses with limited space.

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20 Ton L Type Single Girder Gantry Crane

The L Type Single Girder Gantry Crane features an "L"-shaped leg on each end. This leg design offers a low weight and wide clearance under the main girder. It is well-suited for handling long materials (like pipes or beams) outdoors, since the L-shaped outriggers maximize side clearance. Yuantai's L-type cranes can be built for capacities up to 20 tons.

20 Ton Truss Gantry Crane for Outdoor Lifting

Truss Gantry Cranes use a truss frame girder rather than a solid box beam. The triangular truss structure reduces weight and wind resistance while maintaining strength. Truss cranes are made for large spans and outdoors, where wind loads are a concern. They can be single or double girder, and range from 5 to over 100 ton. A 20 ton truss gantry crane is ideal for construction sites, yards, or bridge work where durability in weather is needed.

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20 Ton Double Girder Gantry Crane

A Double Girder Gantry Crane has two main beams and can carry heavier loads or longer spans. Yuantai's double girder gantry cranes handle 5–500 tons, so a 20 ton version is well within normal range. These cranes are very stable and suited for heavy-duty use outdoors or indoors where overhead cranes are not feasible. They often include large end-carriage wheels and strong girders to move 20 ton loads smoothly.

20 Ton U-Type Double Girder Gantry Crane

The U-Type Double Girder Gantry Crane is a special double-girder crane with vertical U-shaped legs. This design increases clearance between the legs, making it easier to move large or awkward loads beneath the bridge. Like other double-girder cranes, it excels at high-capacity lifting. A 20 ton U-type crane provides extra workspace under the crane while still delivering strong, stable lifting. This model is common in outdoor yards and hydropower stations where floor clearance is key.

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Each 20 ton crane is built to order. You can choose single or double girder, leg style (A-frame, U, or L), span length, and hoist type. All models comply with international standards (CE, ISO). Yuantai's cranes use quality materials (steel Q235/Q345) and proven hoist mechanisms.

Features of 20 Ton Gantry Cranes

All 20 ton gantry cranes share key features:

• High Lifting Capacity: Engineered steel girders and heavy-duty hoists give a safe 20 ton working load. Double girder designs offer extra strength and stability for high-duty use.
• Versatile Operation: These cranes can travel on rails indoors or outdoors. Many models allow either pendant, radio remote, or cabin controls. They adapt to various sites — factories, ports, yards, or construction fields. For example, an outdoor truss crane resists wind, while a semi gantry saves roof support.
• Custom Spans and Heights: The crane bridge span (distance between legs) can be as small as 8–10 m up to 40 m or more, per project. Lifting height (hook drop) is designed to meet ceiling or yard height. Available in standard voltages (220–440V 50/60Hz 3Phase).
• Robust Construction: All components use quality steel and welding. Legs (A-frame, L-shape, or U-shape) are welded steel box sections. Girders are welded I-beam or box frames. Wheels and rails are heavy gauge. This yields a stable, long-lasting frame built for heavy service.
• Smooth Hoisting and Travel: Cranes use proven electric hoists (CD1, MD1, NR series) for vertical lift and geared motors for travel. Speed controls are often available. Double-girder cranes typically have the hoist on top of the girders for greater hook height. Gantry cranes offer smooth, precise positioning of loads.
• Safety Features: Standard safety systems include overload protection, emergency stop buttons, and mechanical limit switches. For example, upper and lower hook limit switches stop travel beyond safe range. Brake motors and buffers reduce swing and impact. Truss cranes reduce wind sway. All Yuantai cranes meet safety norms (CE, TUV, etc.).

These features make 20 ton gantry cranes reliable for heavy-duty handling. They operate independently of overhead runways (no need for building rigging) and can be placed on ground rails or skid-chains.

Parts and Components

A 20-ton gantry crane is made up of several key structural and mechanical elements that work together to lift and move heavy loads efficiently. Each part has a specific role, and when combined, they create a stable, reliable lifting system. Understanding these parts helps you make informed decisions when comparing crane types, prices, and performance. Although configurations may vary, the fundamental components remain consistent across most models, especially when you are choosing between single-girder and double-girder designs.

1. Bridge (Main Girder)

The primary horizontal beam(s) spanning between legs. Can be single or double girders. In double-girder cranes, two parallel beams provide the runway for the hoist. Girders are made of welded steel beams (box or I-beams) for high strength.

2. Support Legs and End Beams

Steel legs (also called end carriages) support the bridge. They form the gantry frame. Legs may be A-frame, vertical (U-type), or L-shape. They are mounted on bottom end beams or saddles that hold the travel wheels. The legs transfer the crane's load to the rails. Y-shaped or U-shaped legs offer more clearance between them.

3. Crane Trolley and Hoist (Lifting Mechanism)

The hoist unit (motor, gearbox, drum, hook) travels along rails on top of the bridge girders. This is the lifting component that raises/lowers the load. It includes the hoist motor, drum/winch, gearbox, brake, and hook block. The hoist is often an electric wire-rope type (CD1/MD1), sized for 20 ton lifts.

4. Crane Traveling System

Motors, gearboxes, and wheels that move the crane along rails. On each end carriage are motors connected to steel wheels running on floor rails. These drive the crane longitudinally along the work area. Motorized wheels and drives ensure smooth back-and-forth movement.

5. Controls and Electrical System

The crane uses a controller panel with contactors or variable frequency drives. It includes control cables (cable reel or festoon) and a pendant or radio remote control for the operator. Options include cabin control (enclosed operator cabin) for high-use cranes. Electrical components are rated for industrial duty.

6. Safety Devices

Limit switches (for hook travel), overload relays (to prevent lifting beyond capacity), emergency stop switch, horn, and travel limit switches are mounted on the trolley and carriage. A brake on each motor holds position when power is off.

Each gantry crane model is a complete assembly of these parts. For example, a U-type double girder crane consists of two parallel main beams, robust U-shaped legs welded to end carriages, a trolley hoist unit, and drive motors on the ends. A single girder crane replaces the two beams with one main beam and travels on steel rails.

Precautions for Use

Operating a 20 ton gantry crane safely requires attention to several points:

Stay Within Capacity

Do not lift more than the rated 20 ton load. Use built-in overload protection and heed warning indicators. Always verify the load weight before lifting. Never shock-load or swing loads abruptly.

Environment and Load Type

These cranes are not for use with molten metals, flammable or explosive materials. Avoid use in corrosive or extreme-heat conditions, as specified by the manufacturer.

Pre-Operation Checks

Before each use, inspect the crane and environment. Check that rails are free of obstacles, wheels are clean, and end stops are in place. Verify that limit switches and brakes work. Inspect ropes, hooks, and chains for wear or damage.

Operating Area

Keep the work area clear of personnel and obstructions while moving or lifting a load. Do not allow anyone to stand under a suspended load. Use warning signals if needed.

Proper Training

Only qualified operators should use the crane. Operators must be trained in crane controls and safety.

Regular Inspections

Perform routine inspections (daily/weekly) as recommended. Address any unusual noise, vibration, or malfunction immediately.

Following these precautions will help prevent accidents and equipment damage. Always follow the crane's instruction manual and meet local safety regulations. Yuantai's cranes come with documentation specifying safe operation procedures.

How to Select the Right 20t Gantry Crane

When purchasing a crane you want a crane that is perfect for your daily operations. Since everyone's work environment and work situation is different, the best crane should be able to meet your workflow, safety needs, and other factors. Planning ahead helps to avoid subsequent problems caused by unsuitable equipment.

1. Load Capacity and Duty

Choosing the correct 20-ton gantry crane starts with matching the crane's capability to your application. A 20-ton capacity should comfortably handle your heaviest load, not just the average one. If you work close to the maximum capacity daily—such as moving steel plates, concrete segments, or heavy machine components—you will benefit from a double-girder design because it offers greater durability and stability. If you only lift near 20 tons occasionally, a single girder may give you enough performance while saving cost and reducing overall weight.

2. Span and Height

Span and lifting height also play a major role in selecting the right crane, because they determine how well the crane fits your workspace. The span refers to the width the crane must cover, while lifting height relates to how high the load must be raised. If you work in a warehouse with limit ceiling height, the hoist and girder configuration must fit without compromising movement. For outdoor yards or ports where spans can exceed 20 to 30 meters, a truss structure or double-girder system provides additional strength and rigidity.

3. Environmental Constraints

Environmental conditions influence the structure and protection level of the crane. If you use the crane outdoors, weather protection such as anti-corrosion coatings, storm locks, and wind-resistant truss frames can offer better performance and longer service life. In environments with dust, humidity, or chemicals, sealed motors and professional surface treatments protect critical parts from damage. Site layout also matters. If there is no suitable building support, a full gantry or mobile gantry may fit best. If one side of the crane can run on an existing runway or building support, a semi-gantry structure saves steel and reduces installation cost.

4. Leg Style

The style of the crane legs affects how easily materials can move under and around the crane. A-frame legs provide strong support and stability for general lifting work. L-type legs allow more clearance for long materials such as pipes, beams, and wind tower sections. U-type legs create the most space between legs, which is helpful if trucks, containers, or large carriers need to move directly underneath the crane. Thinking about how materials flow through your site will help you choose the shape that supports your work rather than restricting it.

5. Frequency and Speed

Operating speed and usage frequency help define the right duty level of the crane. If you lift many loads per hour or run the crane across long shifts, choosing a crane with higher duty grade, stronger motors, advanced braking systems, and multi-speed hoisting functions ensures smoother handling and better efficiency. For occasional lifting, such as maintenance or repairs, a lighter duty crane may be sufficient and more cost-effective.

6. Control and Power

Control and power options affect how convenient and safe the crane feels during operation. A pendant control works well for simple tasks and short spans. Wireless remote control provides more flexibility because you can walk around and have a clear view of the load during the lift. A cabin control option may be more comfortable if the crane operates continuously or across large spans. You should also confirm that the crane’s voltage and electrical system match your site’s power supply and consider cable reel or conductor systems for power delivery depending on how far the crane travels.

In summary, selecting a 20-ton gantry crane is about comparing your real-world needs with different crane configurations. If you need a simple and cost-effective crane for moderate lifting, a single-girder design may meet those needs. If your work involves heavy-duty use, large spans, or frequent lifting, a double-girder crane offers greater performance and lifespan. When in doubt, talk with a technical expert and share your workspace details, lifting data, and long-term plans. This helps ensure you get a crane that fits your operation today and supports future growth.

Maintenance Guide

Proper maintenance keeps a gantry crane safe and reliable. Follow these guidelines:

• Daily Inspections: Before each shift, inspect critical components. Check hooks for cracks or deformation. Examine wire ropes and chains for wear or kinks. Look at sheaves and pulleys for sharp edges or misalignment. Test limit switches: run the hoist up and down to ensure the upper and lower limits stop the motion properly. Verify the travel brakes engage.
• Lubrication: Grease moving parts regularly. Apply oil or grease to wire ropes, gearbox, trolley wheels, and crane bearings as per schedule. Good lubrication prevents wear. Confirm that all grease points and gearboxes are serviced at the recommended intervals.
• Weekly Checks: Inspect the crane structure and rail alignment. Tighten bolts on end carriages and girders. Check travel wheels and rails for wear or debris that could cause derailment. Ensure end stops and buffers are secure. Test all safety devices and alarms.
• Monthly Testing: Perform functional tests on brakes, limit switches, and controllers. Measure brake pad wear and adjust if needed. Check electrical panels for loose connections.
• Annual Inspection: Have a qualified technician perform a thorough audit. This includes nondestructive testing (NDT) of high-stress parts (e.g. hook, beams) and a comprehensive check of all components. Ensure compliance with any local crane safety standards.
• Record Keeping: Keep a maintenance log. Document all inspections, repairs, and modifications. This history helps spot recurring issues and demonstrates due diligence.

Regular maintenance reduces downtime and extends the crane's life. As one source notes, poor maintenance can lead to failures and hazards. Yuantai provides support and spare parts to help maintain peak performance. For example, limit switch function should be verified and worn ropes replaced immediately.

Customization Options Available

Yuantai's 20-ton gantry cranes are built to be adapted to real jobsite needs. You can mix and match features so the crane fits your layout, duty cycle, and budget. Choices affect cost, performance, maintenance, and safety. Tell Yuantai your working environment and load profile. They will recommend the best combination.

1. Steel Grade and Paint

You can choose standard Q235B for general use or Q345B when you need higher strength and better fatigue resistance. For outdoor or corrosive sites, request protective coatings such as epoxy primers, polyurethane topcoats, or galvanizing to extend life and reduce maintenance. Paint color is selectable — standard blue or yellow, or a custom shade so the crane matches your plant or safety coding. Coating systems can be specified for UV resistance, chemical splash, or salt-spray environments.

2. Span and Height

Set the bridge span to fit the clear distance between crane legs and the work area. Spans typically start around 8 meters and go well beyond 35 meters for special projects. Choose the lifting height (hook travel) to match building headroom, truck clearance, or stack height. When you specify span and height, Yuantai engineers check headroom, approach clearances, and the required trolley travel to ensure safe operation.

3. Leg and Support Design

Pick a leg style that suits your foundation and site mobility needs. Fixed-height legs give the simplest, stiffest support. Adjustable legs help when floor levels vary. Mobile legs with casters or bogies let you reposition the crane without rails. Outriggers can be A-frame, L-shaped, or U-shaped to match your floor loading and access needs. Foundation and anchor bolt details are designed to match the chosen leg type.

4. Hoist Type and Speed

Choose a hoist that matches the work: common electric models like CD1, MD1, NR are economical for general duty, while open-winch designs handle long rope lengths or special drum arrangements. You can pick single-speed or dual-speed hoists for basic applications. For precise lifts and smooth handling, select a stepless drive (variable frequency) that lets you control acceleration, speed, and soft stops. Duty class and rope or chain type are selected to match your hourly use and maintenance plan.

NR Type Electric Wire Rope Hoist

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Single & Double Speed Electric Wire Rope Hoists

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European-Style Electric Chain Hoist with Electric Trolley

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Manual Chain Block

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5. Power and Controls

Specify the power supply that matches your site, for example 380V three-phase or 415V depending on regional norms. Control options include a floor pendant, a wireless remote for operator freedom, or a cabin for long shifts and better visibility. You can add PLC integration, programmable logic for sequencing, soft-start devices, limit switches, and emergency-stop circuits. Custom control logic or push-button stations are available if you need special interlocks or system integration.

6. Mobility and Rails

If you need portability, Yuantai can fit the crane with rubber wheels or a bogie system so it runs on existing ground or temporary rails. For fixed installations, choose the rail profile and layout — single-rail for compact footprints or bi-rail for greater lateral stability and heavier duty. Rail alignment, splicing, and expansion joints are designed to minimize track wear and maintain safe travel accuracy.

7. Additional Accessories

You can add safety and productivity extras such as overload protection devices, rope length limiters, and anti-sway systems. CCTV or camera systems help with blind lifts. Attachments like grab buckets, electromagnetic plates, spreader beams, or specialized hooks let the crane handle unique loads. Yuantai can also integrate load cells, anti-collision sensors, cabin HVAC, or cold-weather heaters where needed.

8. Certification and Standards

All cranes are supplied with CE certification as standard. If your project requires other standards, Yuantai can design to ISO, EN, ANSI, or local national codes on request. Documentation packages can include design calculations, test certificates, FAT/SAT reports, and load test results. The company will also support inspection and acceptance procedures required by your project or regulatory body.

Whether you need special spans, high-strength designs or special attachments, this 20 ton gantry crane can be customized. If you want to buy a crane, you can tell us your lifting capacity, span, height, environment, and we can provide you with the right configuration.

Frequently Asked Questions

1. What are the typical applications of a 20 ton gantry crane?

20 ton gantry cranes are used in industrial yards, steel factories, shipyards, construction, and logistics. They handle heavy parts, equipment, and materials – for example, lifting steel beams, containers, machinery, or concrete forms. Outdoor models (truss or U-type) suit rough terrain; indoor models manage factory assembly lines.

2. How do I maintain a 20 ton gantry crane?

Perform daily visual inspections of the hook, wire rope, and limit switches. Lubricate moving parts weekly. Test brakes and controls regularly. Follow the manufacturer's checklist. Keep rails clear of debris. Replace worn parts promptly. An annual professional inspection is recommended for safety.

3. Single vs. Double Girder – which is better for 20 ton?

If your work is heavy-duty or continuous, a double girder crane provides extra strength and a higher lift height. For lighter-duty use or lower budget, a single girder gantry (up to 20 ton) is more economical. The choice depends on span and frequency of use.

4. Can a 20 ton gantry crane be customized for unusual spans or environments?

Yes. Yuantai custom engineers crane spans, heights, and leg styles to match site requirements. You can specify long spans, tall hook heights, or special rail layouts. For example, if you need extra clearance underneath, choose an L-type or U-type gantry. If you need a taller hook height, we can raise the leg height or use wheels with extended bearings. Tell us your specs and the crane will be designed accordingly.

5. How do I choose 20 ton gantry crane parts like the hoist or control?

Pick a hoist rated for 20 ton lifts (usually a CD/MD series wire rope hoist). Consider two-speed or VVVF control for precision. For controls, you can choose a pendant, cabin, or wireless remote. Ensure the hoist has safety features like mechanical brakes and overload protection. All parts are industrial-grade and meet safety standards.

6. Where can I get a 20 ton gantry crane for sale?

Yuantai Crane supplies factory-direct 20 ton gantry cranes worldwide. You can contact Yuantai for quotes; they have a range of stock designs and can build custom cranes. All cranes are CE-certified and built in a ISO factory.

How to get quotation?

Send us your RFQ including the parameters above, we will reply our quotation accordingly.