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Traditional Single-Girder Tire Crane
Single‑girder rubber‑tyred gantry crane (also known as small RTG mobile gantry crane) is flexible mobile gantry lifting equipment equipped with heavy‑duty rubber tires as travelling mechanism. It eliminates the need for fixed embedded rail foundation.
Yangyumech small RTG covers capacity 1‑20 ton, span 5‑22 m. It can freely re‑position across flat hardened ground, greatly improving site utilization. Available in electric‑driven or diesel‑hybrid power. Widely applied for machinery workshops, warehouses, freight yards, precast‑component sites and temporary construction‑site lifting tasks.
Description
Typical Application & Site Pre‑Conditions
Single‑girder rubber‑tyred gantry crane fits flexible‑layout scenarios:
‑ Machinery manufacturing workshops, parts handling stations
‑ Warehouse and logistics freight yards
‑ Precast‑concrete component temporary stockyards
‑ Temporary construction sites without pre‑laid rail infrastructure
Critical site‑pre‑condition:
1. Working ground must be flat, hardened concrete floor; soft soil, mud or steep slope ground are forbidden.
2. Regular inspection for rubber tires, tire pressure and wear condition is mandatory.
3. Apply parking brake when equipment stays idle for long‑period.
Ambient temperature:‑20℃ ~ +40℃; Suitable for indoor & open‑air yard.


A tire-mounted single-girder crane is a lightweight lifting device that uses tires as its traveling mechanism. With its unique design and flexible performance, it occupies an important position in the field of material handling.
From a structural perspective, it features a high-quality steel main beam as its core load-bearing component, paired with a simple electrical control system and lifting mechanism. The overall structure is streamlined yet stable. Unlike traditional rail-mounted cranes, its tire-mounted design frees it from the constraints of fixed tracks, allowing it to move freely in various locations such as workshops, warehouses, freight yards, and construction sites. It is particularly suitable for scenarios that require frequent changes in working positions.
In terms of performance, its lifting capacity is suitable for small and medium-sized material handling needs, and it is easy to operate. Staff can master its operation after a short training session. At the same time, its compact structure allows it to operate flexibly in confined spaces, greatly improving site utilization. In addition, compared with large lifting equipment, the manufacturing and daily maintenance costs of tire-type single-girder cranes are lower, saving companies a lot of money.
Widely used in mechanical manufacturing, automobile production, warehousing and logistics, construction, and other industries, it can easily handle the precise handling of parts, rapid loading and unloading of goods, and efficient transfer of building materials. With the development of technology, this type of crane is gradually upgrading towards intelligence and energy efficiency, and will play a greater role in improving work efficiency and ensuring operational safety in the future.
Custom Purchasing Process
1. Submit inquiry: Provide rated lifting capacity, span, lifting height, power‑mode(electric / diesel‑hybrid), working‑duty(A3‑A4), site ground‑condition, hoist‑type, control‑mode and special‑environment requirements(explosion‑proof / coastal anti‑corrosion).
2. Custom technical drawing & quotation: Our engineering team delivers tailored layout drawing and formal quotation within 24 working hours.
3. Order confirmation: Confirm technical specifications, delivery cycle and commercial terms.
4. Production & strict‑quality‑inspection: Raw‑material inspection, welding UT non‑destructive‑test, dynamic‑static‑load factory‑acceptance‑test.
5. Seaworthy export‑packaging & ocean shipment; deliver full‑set of CE‑ISO export‑oriented certification documents.
6. After‑sales support: Installation‑guidance manual, remote‑technical‑service and long‑term spare‑parts supply (including rubber‑tire consumables).
Features
1. Excellent mobility with heavy‑duty rubber‑tire travelling mechanism. No requirement for fixed embedded rail foundation, save expensive rail‑laying civil‑work cost.
2. Flexible re‑positioning: Can be relocated freely between different work zones, perfectly adapt for frequently‑changed yard layout.
3. Multiple power‑supply solutions: cable‑reel electric‑driven for fixed‑site; diesel‑hybrid unit for off‑grid open‑air temporary‑site.
4. Compact single‑girder welded steel‑structure, moderate self‑weight, match 1‑20‑ton medium‑small‑capacity lifting requirement.
5. User‑friendly electrical‑control logic, short operator training‑cycle; support wireless remote‑control upgrade option.
6. Complete safety‑protection suite: parking brake, overload‑limiter, travel limit switches, emergency‑stop protection.
7. Good space‑adaptability, compact overall dimension, can operate in relatively‑confined workshop or yard space.
8. Economical total‑project cost: lower initial investment, easy daily maintenance; rubber‑tire consumable spare‑parts are available.
Technical Data
| Capacity | 1t | 2t | 3.5t | 5t | 10t | 16t | 20t |
|---|---|---|---|---|---|---|---|
| Span | 5-10m | 6-12m | 7-14m | 8-16m | 10-18m | 12-20m | 12-22m |
| Lifting height | 4-8m | 5-10m | 6-12m | 6-14m | 8-16m | 8-18m | 10-18m |
| Work Duty | A3 | A3-A4 | A4 | A4-A5 | A5 | ||
| Lifting speed | 8/0.8m/min | 6/0.6m/min | 5/0.5m/min | 4/0.4m/min | |||
| Hoist Traveling Speed | 15-25m | 15-30m | 20-30m | ||||
| Crane Traveling Sprrd | 5-10m | 5-8m | 3-6m | 3-5m | |||
| Rail | Hardened Concrete Floor | Reinforced concrete floor | |||||
Purchasing Process




Our Crane Certifications
Our cranes (overhead crane, gantry crane, jib crane and electric hoist) are fully certified to meet international and local manufacturing standards. We hold complete qualification documents to guarantee product safety and reliable quality for global buyers. Below are our key certifications:
- ISO 9001 Quality Management System Certificate
- ISO 45001 Occupational Health & Safety Management Certificate
- Special Equipment Type Test Certificate for Lifting Machinery
- Manufacturing License for Lifting Equipment
- Third‑party Independent Audit Certificates
- Complete Export‑Oriented Qualification Documents
Our Custom Visit
We welcome worldwide customers to visit our manufacturing workshop. You can check crane production processes, raw materials and finished products face‑to‑face with our engineering team.
- Customized Crane Solution Design
- Professional Technical Consultation & Quotation Support
- Production Tracking & Quality Supervision
- Overseas Shipping & Complete Document Service
- After‑sales Technical Support & Guidance


FAQs About Choosing the Right Gantry Crane and Supplier
In order to obtain accurate quotes for custom overhead cranes, providing the following core information will greatly improve efficiency:
1. Key specifications: including rated lifting weight (tons), span (i.e., track spacing, meters), and lifting height (meters), which is the basis of the design.
2. Use environment and working conditions: Explain the conditions of the installation site (such as indoor/outdoor, temperature, humidity) and work level (busy level), which determines the material selection and configuration level of the structure.
3. Specific configuration requirements: clarify the drive mode (such as frequency conversion control), brand preferences for electrical components, safety devices (such as overload limiters, anti-collision systems), and whether special functions such as remote control are required.
4. Installation and service: confirm the on-site power supply conditions (voltage, frequency), installation conditions, and specific expectations for delivery time, installation and commissioning, and after-sales service.
The more detailed the information provided, the more accurate and reliable the solutions and quotations obtained.
1. Span and lifting capacity: this is the foundation.The larger the span and the higher the rated lifting weight, the material and design costs of the main beam and structure will increase significantly, and the higher the price.
2. Working level and frequency of use: The working level (A1-A8) represents the busy level and load status of the crane.Cranes with frequent and heavy-duty use require more durable motors, gearboxes and structural parts, and the cost is naturally higher than that of lightweight and occasionally used equipment.
3. Structure and configuration: The double beam is more complex and stable than the single beam structure, and the price is higher.At the same time, the lifting height, operating speed, motor brand, control system (ordinary vs frequency conversion), and the level of safety devices (such as anti-swing, load monitoring) all directly affect the final quotation.
4. Degree of customization and brand service: completely standard models have lower costs.The customized design based on the workshop environment (such as explosion-proof and high temperature), special processes (such as metallurgical special), brand added value, and after-sales guarantee system will all be reflected in the price.
In simple terms, when buying a bridge crane, it is necessary to consider “how much, how frequently, what environment and what configuration”, which determine its core value and price.
Which crane to choose mainly depends on your specific needs. You can quickly judge from the following four core aspects:
-Single-beam bridge crane: it is suitable for conventional workshops with light and medium loads (usually ≤20 tons), medium span, and low frequency of use. It is the most economical and versatile choice.
-Double-girder bridge crane: used for heavy-duty, long-span, or high-work-level occasions (such as frequent hoisting, metallurgy, heavy-duty assembly). Its stability, durability, and safety are higher, but the cost is also increased accordingly.
-Free vertical crane (cantilever/column type): suitable for fixed working points and working conditions with limited rotation range, such as beside machine tools, maintenance areas, or production line stations, it can efficiently use corner space and be installed flexibly.
-Grab crane: It is specially used for the handling, loading, and unloading of bulk materials (such as grain, coal, sand, and gravel). The only reason to choose it is that you need to deal with such unpackaged loose materials.
In simple terms, you can filter according to this logic:
First, according to the lifting weight and span, choose between a single beam and a double beam.
If the scope of operation is highly concentrated and the space is limited, consider a free vertical.
If the handling object is bulk material, it points directly to the grab type.
Delivery times largely depend on whether the crane is standard or customized. Based on our experience, standard single-girder and double-girder cranes can be produced more quickly, while cranes with special spans, duty ratings, or environmental requirements naturally require additional engineering design time.
For each quotation, we provide an estimated production and delivery schedule based on your configuration and destination. Throughout the manufacturing process, our team maintains communication with the customer to ensure no unexpected issues arise before shipment.
Compared with many suppliers, Yangyumech mainly reflects the two differentiated advantages of high customization flexibility and clear international compliance when providing bridge cranes.
On the one hand, we focus on in-depth customized services. According to your specific needs, we can provide fully customized solutions on core parameters such as rated load capacity, span, and lifting height, and accept personalized requirements. This means that what you get is not a standard product, but exclusive equipment that accurately matches the working conditions of your workshop.
On the other hand, we attach importance to international standards and quality certification. Our products clearly meet the requirements of international certifications such as CE, which ensures that their safety and reliability can meet the mainstream standards of the international market, and provides you with additional quality confidence guarantees. Combined with our direct supply capabilities as a powerful factory, we can achieve better comprehensive value for you while obtaining compliant and customized products.
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