25 Ton Rubber Tyred Single Girder Gantry Crane in Peru
A Peruvian customer recently ordered a 25 ton rubber tyred single girder gantry crane for transformer handling inside an industrial workshop. The project was not a standard gantry crane application. The customer had clear requirements for the overall height, power supply, wheel movement, and hoist arrangement.
The final solution was developed through several rounds of technical communication, drawing revisions, feedback, and a video meeting. By taking the customer's actual working environment into account, we were able to provide a solution that matched the project requirements and earn the customer's trust.
A Crane Designed for Indoor Transformer Handling
The customer is the General Manager of a company involved in lifting transformers and related equipment. The crane would be used inside a workshop, where available space and movement flexibility were important.
The required lifting capacity was 25 tons, with a span of 7.5 meters and a lifting height of 5.5 meters. The crane has an M4 working class and is designed for 460V/220V, 60Hz, 3-phase power.
The customer also required the total crane height to remain within 7 meters. This was an important point because the crane would operate inside an existing building. The structure therefore needed to provide the required lifting performance without taking up unnecessary vertical space.
No Diesel Engine Required
The customer specifically requested a single external power supply and did not want a diesel engine.
We therefore designed the crane as an electrically powered rubber tyred gantry crane. This configuration is more suitable for an indoor workshop where exhaust emissions and engine noise are undesirable.
The electrical system is arranged around the customer's local power requirements. This also makes the equipment easier to integrate into the existing workshop environment.
A Fixed Hoist in the Middle of the Main Beam
Another unusual feature of this project was the hoist arrangement.
The customer did not need a conventional trolley travelling along the main beam. Instead, the hoist is fixed at the center of the main girder. There is no trolley travelling mechanism.
This configuration was selected according to the customer's transformer handling process. Since the lifting point does not need to move along the beam, removing the trolley system simplifies the structure and keeps the lifting point in the required central position.
The final crane is equipped with four rubber tyres. The steering and movement system was designed to provide several movement modes according to the customer's site requirements.
Four-Wheel Steering for Better Maneuverability
The four wheels were one of the key technical points discussed during the project.
The customer needed the crane to move in different directions inside the workshop. It was not enough for the equipment to travel only forward and backward along a fixed path.
Based on the movement requirements provided by the customer, we developed a four-wheel steering configuration that allows the crane to change direction and reposition itself within the working area. This is particularly useful when handling large transformers, where the crane may need to approach the load from different directions.
The movement layout was also reviewed through drawings before production.
Technical Communication Led to the Final Solution
The customer requested drawings before manufacturing. Our team therefore prepared the technical drawings and sent them to the customer for review.
The first proposal was not simply treated as the final answer. We discussed the customer's feedback, adjusted the design where necessary, and sent the revised solution back for confirmation.
A video meeting was also arranged to go through the technical details directly. This helped both sides confirm the structure, movement functions, power supply, and operating requirements more clearly.
For a customized crane, this step is important. It allows the customer to see how the equipment will work before manufacturing begins.
From a Special Requirement to a Confirmed Order
After several rounds of modification and confirmation, the customer approved the final design and placed the order.
The crane will be delivered to Callao Port, Peru, under CIF terms. The agreed delivery time is 30 working days, with payment arranged at 20% T/T in advance and 80% before shipment.
This project demonstrates that customized lifting equipment often requires more than a standard quotation. The customer's workshop layout, load type, movement requirements, and power conditions all affect the final design.
By listening carefully, responding quickly, and using drawings and video meetings to confirm the details, our team developed a practical 25 ton rubber tyred gantry crane for the customer's transformer handling work.
