The lifting capacity of single-girder bridge cranes generally ranges from 1 to 32 tons. According to different standards, single-girder electric hoist cranes can be divided into different categories. Generally speaking, single-beam electric hoist cranes can be divided into single-beam wire rope hoist cranes, single-beam chain hoist cranes, single-beam low headroom cranes, etc. according to the type of electric hoist. We currently provide customers with two main categories in Malaysia, LD Single girder overhead crane (wire rope hoist) and HD Single girder overhead crane (fem electric hoist).

In order to help you better understand the differences between these two types of single beam bridge cranes, I will use a case study from an Australian client as a comparative explanation.

The following is the comparison LD overhead crane & HD overhead crane for our Australia client,who need a set of 6.3 ton + 6.3 ton single girder overhead crane with two electric hoists.

Feature	HD (European type single girder overhead crane)	LD (Traditional type single girder overhead crane)
Design	Modular design originated from Europe (motor, reducer, electrics separated, easy to maintain)	Integrated design (Hard to maintain)
Appearance
Working class	M5	M3
Lifting height	4.15m (Low headroom is a basic feature of European type hoist.)	4.05m (We use low headroom type hoist to enable maximum lifting height in LD model.)
Lifting mechanism	Motor, reducer and brake 3-in-one, soft start for smooth running, long life design, maintenance free Wire rope breaking force: 2160N/ mm2 Rope diameter: 9mm Wire rope does not need oil. Rope guide: industrial plastic (small friction with wire rope)	Wire rope breaking force: 1670N/ mm2 Rope diameter: 15mm Wire rope needs oil. Rope guide: Iron (big friction with wire rope)
Lifting speed	0.5~5m/min (inverter control)	4m/min (single speed)
Trolley travelling speed	2~20m/min (inverter control)	20 (single speed)
Crane travelling speed	2~20m/min (inverter control)	20 (single speed)
Electrics	Schneider	CHNT （origin from China）
Maintenance	Maintenance free, no need to add oil 3~5 years	Gear box, wire rope needs to add oil every year. Will need to stop production for maintenance.
Noise	Little noise, environmental-friendly at work	Big noise in warehouse
Total weight	6.5t	7.14t

If you do not know which type of single girder overhead crane to choose, please feel free to contact us. Or Leave a message below, our single girder overhead crane engineer will design the most suitable overhead crane for your application.