7.5 Ton Custom Top Running Single Girder Bridge Crane for Sale

BY Dongqi Crane IN Overhead Crane Blog

Custom Bridge Cranes Service:

Dongqi Group is expert at combining complete, high quality standard products with experienced engineering to solve custom problems. We also readily and efficiently modify these standards to fit your particular application. We can assist you at any stage of your project with planning, design, specifications and drawings.

Our line of cranes includes:
single girder top running cranes
single girder under running cranes
double girder top running cranes
fem standard European Overhead Crane

7.5 Ton Top Running Bridge Crane for Sale:

custom top running single girder bridge crane for sale

STEEL CONSTRUCTION

The bridge girder of every crane can be engineered to meet other local codes and regulations.
Both rolled structural shapes and welded plate box girder designs are used depending on design requirements.

END TRUCKS

The crane end trucks are manufactured from structural sections and are jig assembled to ensure alignment of bearings and axles.
Dual motor bridge drives are standard. Other drive types are available upon request.
Bridge to End Truck connections are bolted.
Bridge wheels are flanged with anti-friction bearings.
Rail sweeps and rubber bumpers are standard on all end trucks.

HOISTING MACHINERY

The hoisting machinery consists of a heavy duty industrial type standard wire rope hoist unit mounted on a low headroom type trolley.
Motors are totally enclosed fan cooled, hoist duty with Class “F” insulation.
Gears are precision machined from alloy steel and induction hardened. All gearing is enclosed in a rugged steel housing and is oil splash lubricated.
Steel wire rope drums are precision machined.
Rope drums are available in both single & double grooved configurations.
Hoists are equipped with rope guides to prevent over lapping of the rope on the drum and to extend rope life.
Upper and lower hoisting limit switches are standard equipment.
The trolley is fabricated from structural shapes and plates to suit the application.

MOTORS

All motors are specifically designed for hoist and crane duty.
All motors are totally enclosed fan cooled with Class “F” insulation.

BRAKES

All trolley and bridge drive motors have disc brakes as standard equipment.
All hoists have two braking systems, one control brake and one holding brake.

CONTROLS

Each crane is supplied with a radio control as standard equipment.
Other types of controls such as cab control, or pendant control station sliding on independent track are available.
The electrical components are housed in electrical cabinets to suit the applicable environment.

BRIDGE ELECTRIFICATION

Bridge electrification is provided via a flat cable festoon system suspended from a track as standard equipment.

The following features can be supplied:

Overload Switch.
Power Circuit Limit Switch.
Anti-Collision Equipment.
Runway Electrification.
Travel Limits for Bridge & Trolley.
Weighing Equipment.
Variable Speed Hoist Control.
2 Speed Bridge & Trolley Motions.
Other options are available on request.
Custom runway systems designed to suit many applications.

How to select the right cranes for your application:

Infrequent or Standby Crane Service:

These cranes are best for precise handling at slow speeds. They are good choices for powerhouses, public utilities, turbine rooms, motor rooms, and transformer stations.

Light Duty Crane Service:

This class is ideal for environments with light service requirements and low speed needs. They can handle two to five lifts per hour, and work well for repair shops, light assembly operations, service buildings, and light warehousing.

Standard Crane Service:

These cranes are built for use in machine shops, papermill machine rooms, and other such environments with moderate service requirements. They can handle loads that average 50% of the rated capacity, making five to ten lifts per hour, with not over 50% of the lifts at rated capacity.

Heavy Duty Crane Service:

These cranes may be used in heavy machine shops, foundries, fabricating plants, steel warehouses, container yards, lumber mills, etc., and standard duty bucket and magnet operations where heavy-duty production is required. In this type of service with 10 to 20 lifts per hour averaging 15 feet, not over 65 percent of the lifts at rated capacity.

Custom Crane Service:

These cranes are capable of handling loads approaching a rated capacity throughout its life. Applications may include magnet, bucket, magnet/bucket combination cranes for scrap yards, cement mills, lumber mills, fertilizer plants, container handling, etc., with twenty of more lifts per hour at or near the rated capacity.

As a leading overhead industrial cranes manufacturer, we can provide custom bridge cranes that meet your overhead crane needs. Contact us and let us show you why our Overhead and Bridge Crane Manufacturing experience sets us apart from the competition and how we can increase productivity and safety at your facility!