3 Ton Overhead Crane

3 ton overhead crane is a portable and small lifting device. With light deadweight, flexible move, high efficiency, easy use, simple operation, it has wide application in warehouse, factory, industrial site, material handling yard, assembly line. This kind of bridge crane mainly has three types, top running single girder crane, under running single girder crane and top running monobox type.

Except for light duty overhead crane, such as 3 ton overhead bridge crane, 5 ton bridge crane, 10 ton overhead crane, our company also provides heavy duty industrial overhead crane, such as 15 ton bridge crane, 20 ton overhead crane, 30 ton crane, 40 ton overhead crane, 50 ton crane. As one professional overhead crane suppliers in China, we rank top in crane industry market. To expand our overseas business, we set agency in Pakistan. For any question about crane, just send email to sales@crane.pk

Types of 3 ton crane runways

A runway is mainly composed of rails, girder, brackets and framework. Proper runway installation is very important for the crane safety. If the runways are misaligned due to wear and tear, it may cause premature wheel wear and other component issues. To avoid potential runway problems, such as abnormal wheel wear, bridge skewing, loud scraping sounds, an engineered runway survey is necessary. The following is about types of runways and component details.

1. Runway system uses sister columns and tied back to building.
2. Building is able to support lateral loads from runway system.
3. Flexible tiebacks allow the tie back to flex.
4. The runway deflects and vibrates as the crane travels.
5. Rigid tieback welds are put under repeated fatigue loading.
6. The bolted flexible tieback is must for larger capacity systems.

●Runway on haunches

Haunches or secondary columns mount directly on building columns.
Building design is able to support crane loading.

●Free standing runway system

It is used when building cannot support any loading.
It requires more steel to fabricate
Moment columns use the foundation to support and stabilize the system.
No bracing is needed, more steel in the column than a system tied to building.
It is less expensive, but takes up more space.

●Moment columns

Footer takes lateral and longitudinal loads imposed on the system.
It takes up minimal floor space.
It increases the cost of the system, but the best choice for columns.

●Ceiling mounted

Mounted to building trusses or other support structure.
Longitudinal bracing required on both sides.
Lateral bracing required-one side only.
Building and roof truss design may limit options.

●Rail

Hot rolled steel the crane travels on.
Subject to very high stresses.
Rail size may vary depending system capacity.

●End trucks

End trucks ride on the runway rail and move the bridge crane. There are two types:

●Fixed axle

A fixed axle has an exposed gear on the wheel.
Requires maintenance to keep the exposed gear lubricated.
Fixed axle end trucks are class C duty cycle.

●Rotating axle

A rotating axle’s wheel is directly driven by the motor through a gear box.
Requires less maintenance.
Rotating axle end trucks are class D duty cycle.

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If you want to purchase a reliable 3 ton bridge crane with factory, never hesitate to choose us! Professional technology, strict standards, experienced engineer, sincere after-sale service!