LD Type Single-Girder Crane: Key Parameters & Selection Guide
Electric Single-Girder Bridge Crane (LD Type) is designed and manufactured in accordance with JB/T1306-1994 and paired with an electric hoist. It is a light-duty overhead crane that travels on rails, with a rated lifting capacity of 1–16 t, spans from 7.5 to 30.5 m, duty class A3–A5, and an ambient working temperature range of -25°C to +40°C. This crane is widely used for material handling in factories, warehouses, and storage yards.
Electric Single-Girder Crane Features
The Electric Single-Girder Bridge Crane is a general-purpose overhead crane designed for low-to-moderate duty applications such as machine shops, assembly workshops, and warehouses where lifting frequency is relatively low. The main girder features a box-type welded structure with an integrated I-beam rail, delivering excellent strength, stiffness, and stability while maintaining a compact, aesthetically clean profile. The main girder and end carriages are connected with bolted split joints, simplifying transport and speeding up on-site installation.
Single Girder Crane Specifications & Options
Technical Parameters & Specifications
| ParameterName | Unit | Specification |
|---|---|---|
| Rated Lifting Capacity Gn | T | 1, 2, 3, 5, 10, 16, 20 |
| Span S | m | 7.5~30 |
| Lifting Height H | m | 6~30 |
| Work Duty / Classification | A3~A5 | |
| Power Supply | 380V 50Hz | |
| Crane Bridge / Long Travel Wheel Diameter | mm | 300 |
| Recommended rail | kg/m | 18~38 |
| Lifting Speed | m/min | 8 (7 for 10t and above) |
| Long Travel Speed | m/min | 20 |
| Cross Travel Speed | m/min | 20 |
Note: Gn = Rated Lifting Capacity, S = Span (distance between the centerlines of the left and right crane rails), H = Lifting Height (distance from floor level to the highest point of the hook).
LD Type Electric Single-Girder Crane Price & Quotation
Reference pricing for the LD Type Electric Single-Girder Crane: approximately $3,000–$6,000 for small units (1–3t), $6,000–$12,000 for mid-range units (5t), and $12,000–$27,000 for large units (10–16t). These are standard-configuration reference prices (including the CD1 electric hoist and pendant push-button station), excluding crane rail installation and freight. Customized, non-standard designs are quoted separately. Kelude Heavy Industry offers free design consultation and selection-based quotations.
Ideal Applications for Single Girder Cranes
This crane is widely used in machinery manufacturing workshops, assembly workshops, warehouses, and material yards where heavy loads need to be moved. It is well suited for light-to-medium duty cycles with low to moderate hoisting frequency. It is not intended for use in flammable or explosive atmospheres, nor in environments with high humidity or corrosive acid/alkaline gases.
Electric Single-Girder Crane FAQ
Q1: What is the difference between an LD Type Electric Single-Girder Crane and an LX Type Suspension Crane?
The LD Type Electric Single-Girder Crane runs on crane rails mounted on runway beams supported by the factory building columns. It is suitable for general lifting applications with spans from 7.5 to 30 m and rated lifting capacities from 1 to 20 t. The LX Type Electric Single-Girder Suspension Crane is suspended from the roof structure, leaving the floor space completely clear. It is designed for lighter duty applications with spans up to 12 m and capacities up to 5 t. Kelude Heavy Industry offers both configurations to suit your specific needs.
Q2: Which national standards apply to Electric Single-Girder Cranes?
The LD Type Electric Single-Girder Crane is designed and manufactured in accordance with JB/T1306-1994 "Electric Single-Girder Crane" standard. The matching CD1 wire rope hoist complies with JB/T 9008.1. Complete machine inspection and testing follow GB/T 5905 "Cranes — Test Code and Procedures," and the safety design meets the requirements of GB/T 3811 Crane Design Standard.
Q3: What is the lifting speed of the Electric Single-Girder Crane? Can it be adjusted?
The standard CD1 electric hoist provides a lifting speed of 8 m/min (7 m/min for 10t and above). For precise positioning, an optional MD1 two-speed electric hoist (8/0.8 m/min) is available — fast hoisting for heavy loads and slow, creep-speed positioning for accurate load placement, improving both operational efficiency and safety.
Q4: What are the requirements for retrofitting an Electric Single-Girder Crane into an existing factory building?
Runway beams must be mounted onto the existing building columns. Rail installation accuracy requires a span deviation of ≤ ±5 mm and a height difference between the two rails at the same cross-section of ≤ 10 mm. A minimum safety clearance of 200 mm is required between the top limit of the hook and the upper structure. A 380V/50Hz three-phase power supply is needed, and the steel structure must be verified for adequate load-bearing capacity.
