Top-Running Double-Girder End Trucks

When a bridge crane spans more than 60 feet or carries a load beyond what a single girder can safely handle, wheel load distribution becomes the deciding factor between years of reliable service and repeated downtime. Top-running double-girder end trucks are engineered to solve exactly this problem, spreading heavy loads across a wider wheelbase and holding the bridge in precise alignment as it travels along the runway. At ACE World Companies, our top-running double-girder end trucks are built in-house to support the industry’s most demanding double-girder bridge cranes, from steel mill service to long-span, high-tonnage material handling systems.

Applications for Top-Running Double-Girder End Trucks

Top-running double-girder end trucks are the standard choice whenever a crane system needs greater capacity, span, or hook height than a single-girder configuration can deliver. Typical applications include:

• Steel mills, foundries, and metal fabrication facilities running high-tonnage lifts
• Long-span bridge systems exceeding 60 feet where load distribution across additional wheels prevents runway and rail wear
• Facilities that require maximum hook height, since the bridge rides on top of the girders rather than beneath them
• Aerospace, power generation, and heavy manufacturing plants operating double girder bridge cranes on a near-continuous duty cycle

Because the end trucks support the full weight of the bridge girders and the load moving across them, getting the wheel count, bearing selection, and axle configuration right for your crane’s application is what keeps runway wear, misalignment, and unplanned downtime from creeping into your maintenance schedule.

Design Features Built for Capacity and Precision

ACE World Companies designs and manufactures top-running double-girder end trucks to hold up under sustained heavy-duty use, not just to pass an initial load test. Standard design features include:

• High-strength ASTM A500 Grade B structural tubing for the truck frame
• Axle bores line-bored in a single setup to guarantee precise wheel alignment across the full wheelbase
• Sealed, lifetime-lubricated wheel bearings exceeding CMAA Class “C” bearing life requirements
• Through-hardened, machined wheels available in fixed axle and rotating axle configurations, with 4-wheel and multi-wheel bogie options depending on wheel load
• Rail sweeps and bumpers included as standard, not sold as an add-on
• Motor and gearbox configurations sized for reliable, low-maintenance bridge travel

These are the same design principles behind every configuration we manufacture across our full line of end trucks, but scaled and reinforced to carry the higher wheel loads that double-girder bridge cranes place on the travel system.

Customization Capabilities

No two double-girder bridge cranes carry identical loads, spans, or duty cycles, which is why standard catalog specifications only cover part of the demand we see. Our engineering team designs custom top-running double-girder end trucks with capacities exceeding 800 tons, the highest in the industry, along with custom spans, wheel gauges, and axle configurations built around your existing runway and rail size. If you’re upgrading an aging bridge crane rather than starting from scratch, our crane modernization services team can integrate new end trucks into your current structure, restoring capacity and precision without a full system replacement.

Why Choose ACE World Companies for Top-Running Double-Girder End Trucks

Selecting the right partner for crane end trucks affects more than your initial purchase price. It determines how many years you get out of your bridge crane before misalignment or wheel failure forces an unplanned shutdown.

• In-house manufacturing: We manufacture more than 90% of our parts in-house, so end trucks ship faster and hold tighter tolerances than components sourced from third-party suppliers.
• Certified quality: Our facilities operate under ISO 9001:2015 certification, backing every end truck with a documented quality management system.
• Engineering depth: Decades of experience designing overhead bridge cranes and end trucks for the country’s most demanding industrial applications.
• Full lifecycle support: From original design and manufacturing to modernization and replacement, we support your crane through every stage of its service life.

Browse our End Truck Photo Gallery to see completed top-running double-girder end truck projects, or explore our full line of end trucks to compare configurations. If you’re sourcing replacement components rather than a new end truck assembly, our end truck and trolley parts page covers wheels, bearings, and drive components sold separately.

Request a Quote for Top Running Double Girder End Trucks

Tell us your crane’s capacity, span, and rail size, and our engineers will spec the right top running double girder end trucks for your application.

• Call 800-431-4223 to speak with an engineer directly.
• Use our Request a Quote form for fast turnaround.
• Have questions before you request a quote? Contact the Ace World Companies team and we’ll route you to the right specialist.