- Sep 09, 2025
- Case Studies
5-Ton Single Girder Overhead Travelling Crane for Sri Lanka
Looking for a reliable 5-ton single girder overhead travelling crane in Sri Lanka? Discover affordability and efficiency with our top-quality cranes designed for seamless lifting. Elevate your operations today!
The client operates a logistics and packaging warehouse in Colombo, Sri Lanka, supporting local distribution and export packaging operations. The facility handles palletized goods, packaging materials, and production equipment used for sorting, packing, and dispatch preparation. Daily operations require frequent movement of heavy pallets, packaging machine components, and occasional oversized items between inbound docks, storage racks, and packing stations.
Customer Challenges in Warehouse Operations
During the project consultation, several operational challenges became clear.
1. Limited Efficiency with Forklift-Only Handling
Forklifts were suitable for moving standard pallet loads but were less effective when lifting heavy components onto packing equipment or positioning loads in tight areas. This resulted in multiple handling steps and slower material flow.
2. Need for Faster Loading and Internal Transport
The warehouse supports high-volume logistics activities. Palletized goods and packaging materials must be moved quickly between inbound docks, temporary staging areas, and dispatch points. Manual handling or repeated forklift movements slowed these operations.
3. Safety Concerns During Manual Handling
Some loads required two or more workers to stabilize or guide them during lifting. This increased the risk of workplace injuries and product damage.
4. Structural Constraints of the Existing Warehouse
The building structure had limited headroom and fixed column spacing, which restricted the types of lifting systems that could be installed. Any solution needed to fit within the existing building without major structural modifications.
Preliminary Program
Before the project, the warehouse relied mainly on forklifts and manual handling. This created inefficiencies when lifting heavier loads or positioning items at elevated points near packaging lines. The client therefore required a reliable lifting system that could improve workflow efficiency while fitting within the existing warehouse structure. After evaluating the building layout and operational requirements, we recommended a 5-ton single girder overhead travelling crane (EOT crane) as the most practical and cost-effective solution.
Why we offered a 5-ton single girder overhead travelling crane program
An overhead travelling crane was chosen because it can cover the entire warehouse bay while leaving floor space unobstructed for forklifts and workers. Unlike jib cranes, which only serve localized areas, the bridge crane allows loads to move efficiently across the entire storage and packing zone.
1. Cost-effectiveness
More structural steel is needed for a single girder overhead crane than for a double girder design. In order to save installation costs, it also requires less complicated runway support. Excellent performance at a cheaper initial cost is provided by this design for a mid-range lifting capability of 5 tons. Without going over the entire budget, the savings can be put back into upgraded hoists or more sophisticated control systems, among other upgrades.
2. Building Constraints
Many logistics hubs and warehouses have shorter spans and little headroom. It is simpler to install a single girder design in areas with height limits because it is lighter and smaller. Space usage is further improved by the availability of low-headroom hoist options. This guarantees that the client can optimize storage and workflow effectiveness without being concerned about the crane causing any disruptions to already-existing structures or equipment.
3. Crane Operation
The client's duties include handling warehouses, logistics, and packaging; these operations don't require the intense demands of steel or heavy manufacturing, but they do require frequent lifting cycles. For these applications, a well-specified 5-ton hoist offers more than enough capacity. In order to ensure seamless and effective handling without over-engineering the solution, we carefully matched the duty class and hoist parameters to the customer's anticipated lifting frequency.
4. Maintenance
Single girder cranes have fewer components compared to double girder systems, which means fewer parts subject to wear. This translates into reduced maintenance costs, quicker servicing, and fewer unplanned downtimes. For a company that relies on constant material flow, this dependability is crucial.
In conclusion, the 5-ton overhead travelling crane with a single girder provided the ideal balance of durability, flexibility, and affordability. It provided dependable performance for day-to-day warehouse operations while taking into account the client's space and financial limitations. By selecting this option, the client gains access to a crane system that supports long-term efficiency in addition to meeting short-term demands.
5-ton Single Girder Overhead Crane Design We Provided
We designed and delivered a complete solution tailored for Colombo's warehouse environment. Strength, efficiency, and dependability must all be balanced in a 5-ton single girder overhead travelling crane that blends in perfectly with the customer's building design. Every component, including the hoist, trolley, controls, bridge, and girder, was chosen to provide safe lifting performance with the least amount of downtime. We created a crane system that offers long-term value with low maintenance needs by considering factors like building geometry, lifting frequency, climate, and operator safety.
1. Bridge and Girder Design
The crane uses a top-running bridge configuration, allowing the crane to travel smoothly along runway beams installed on the warehouse structure. The main girder is fabricated from welded structural steel and engineered to support a 5-ton lifting capacity while maintaining safe deflection limits. Precision fabrication ensures stable operation under full load conditions. This design allows the crane to move loads across the entire warehouse span without interfering with floor traffic or storage areas.
2. 5-Ton Wire Rope Hoist and Trolley Selection
The lifting mechanism uses a 5-ton electric wire rope hoist, selected for its durability and superior lifting height compared with chain hoists. The hoist runs on a motorized trolley that travels along the girder. Variable frequency drives control the lifting and trolley movements, allowing smooth acceleration and precise positioning. This system minimizes sudden load swings and reduces mechanical stress on crane components. The trolley also has anti-rollback protection and mechanical brakes, adding extra safety during sudden stops or power loss.
3. Controls for the 5-Ton Overhead Crane
The crane is primarily operated using a radio remote control, allowing operators to control lifting operations from a safe position on the warehouse floor. A wired pendant control is also available as a backup option during maintenance or in restricted areas. Both bridge and trolley drives use variable frequency technology, which ensures smooth starts and stops. This improves load control and extends equipment lifespan.
4. Safety and Protection Features
The 5-ton crane includes several built-in safety features to protect both operators and equipment. An overload device prevents lifting beyond capacity, while limit switches stop the hoist and trolley at set points. Collision protection is available for multi-crane bays, with bumpers as standard and advanced sensors as an option. Emergency stop buttons on the pendant and remote allow quick response in dangerous situations. The crane follows ASME B30.2 standards, making inspection, certification, and long-term compliance easier.
5. Environmental and Corrosion Protection
The crane was designed to withstand heat, humidity, and salty air in the harsh coastal climate of Colombo. Rust, fading, and surface damage are prevented by a robust paint system that includes an epoxy primer and a UV-protected polyurethane finish. While bearings are grease-lubricated or sealed-for-life to reduce maintenance, motors have sealed IP ratings. Corrosion-resistant materials and stainless steel fasteners shield exposed components. When combined, these steps increase the crane's lifespan, save maintenance expenses, and maintain its dependability under Sri Lankan conditions.
How the 5-Ton Overhead Crane Meets the Warehouse Lifting Needs
1. Faster pallet handling and reduced truck turn-time
The crane moves full pallets from dock to staging faster than manual handling. The 5-ton capacity covers pallet loads and palletized machinery. Radio remote control lets operators place loads directly onto conveyors or into racking without back-and-forth repositioning. The result is fewer touches per pallet and faster truck turnaround.
2. Precise machine feeding for packaging lines
Packaging equipment often needs reels or heavy subassemblies moved into position. The wire-rope hoist with VFD trolley gives home-position accuracy. Smooth starts cut the risk of damaging delicate packaging gear.
3. Improved safety and lower injury risk
The crane eliminates risky two-person lifts. Built-in overload protection and limit switches stop accidental overtravel. Operators are kept clear of pinch zones while running lifts with the remote. These changes reduce reported musculoskeletal injuries and associated costs.
4. Flexibility for mixed goods and awkward loads
Palletized goods and irregular forms can be handled by the crane using slings or specially designed lifting gear. When necessary, the open under-bridge space provides ideal access for forklift transfers.
5. Maintenance
There are fewer parts on a single girder crane that are subject to wear. At five tons, wire rope hoists are sturdy. When combined, they reduce the need for spare parts. The overall cost of ownership is lowered as a result.
