LDA Type Electric Single-Girder Bridge Crane

1. Product Overview

The LDA Type Electric Single-Girder Bridge Crane (referred to as LDA type single-girder overhead crane) is a single-girder lifting device designed to be used with CD1/MD1 type electric hoists. It offers a lifting capacity of 1 to 20 tons and spans of 7 to 40 meters. It is suitable for material handling and hoisting operations in factory workshops, warehouses, storage yards, and similar locations. Custom non-standard manufacturing is available based on specific factory dimensions and working conditions. This article details the technical parameters, specifications, dimensions, and purchasing information for the LDA type single girder crane.

Product Image

2. Specifications & Models

Model & Parameter Overview:

• Model: LDA Type;
• Capacity Specifications: 1 ton, 2 tons, 3 tons, 5 tons, 10 tons, 16 tons, 20 tons. Custom non-standard lifting capacities are available.

3. Technical Parameters

• Span: 19.5m, 20.5m, 21.5m, 22.5m, 25.5m, 30.5m; Custom non-standard spans from 7m to 40m are available.
• Lifting Height: 6m, 9m, 12m; Custom heights available.
• Work Duty: A3/M3
• Duty Cycle: JS=15%
• Lifting Speed: 7m/min
• Travel Speed: Trolley: 20m/min, Crane Bridge: 20m/min (Fast speed option available at 30m/min)
• Power Supply: Three-phase AC 380V 50HZ (Custom voltage available for export)

Parameter Specification Table

Applications & Customer Cases

The LDA Type Electric Single-Girder Bridge Crane is one of the most widely used overhead crane models on the market. Its positioning is clear: lightweight design, high cost-performance, and suitability for small to medium tonnage lifting. It excels in the following scenarios:

▎Small to Medium-Sized Factory Workshops
In machining, assembly, and welding workshops, where workpieces and molds under 5 tons need to be lifted dozens of times daily. The LDA type's Duty Class A3/M3 is perfectly matched for such operations that don't require continuous full-load running. A machinery processing factory in Qingdao, Shandong, installed two LDA type 10-ton single-girder overhead cranes with a 22.5m span in its workshop for raw material warehousing and finished product loading. The customer reported no major overhauls in 3 years, saving over 60,000 CNY annually compared to their previous forklift rental costs.

▎Warehouses / Storage Yards
For daily lifting tasks in steel warehouses, finished goods warehouses, and open-air storage yards. The LDA type can be equipped with floor operation via wireless remote control, allowing operators to control the crane from the ground without needing a dedicated crane operator. A warehouse in a steel market in Hebei uses an LDA type 16-ton single-girder crane with a 25.5m span for daily loading of steel plates and profiles. The customer particularly appreciated the wire rope hoist's lifting speed—7m/min, which is more than twice as fast as using a manual hoist for steel plates.

▎Aquaculture / Food Processing
Many may not realize the LDA type is also widely used in farms and food processing plants. Applications include equipment hoisting on chicken house cleaning lines and loading/unloading frozen goods in cold storage. These environments require equipment that is clean, leak-free, and simple to operate. A meat processing factory in Henan installed an LDA type 5-ton crane with a stainless steel hoist at its cold storage entrance for loading frozen products. The LDA type was chosen for its lower cost (more than half the price of an explosion-proof version) and operational simplicity—regular workers can be trained to use it in just 10 minutes.

Structural Diagram

4. Purchasing Information

When purchasing a single girder crane, please provide the following data so we can quickly confirm your requirements:

• Lifting Capacity
• Span (distance between crane rail centers)
• Lifting Height (from hook center to floor)
• Do you require crane rail and cable? (Please provide the crane travel length)
• Please provide any additional detailed information for a tailored quotation for your single girder crane.

5. After-Sales Service

The LDA Type Electric Single-Girder Bridge Crane comes with a one-year warranty covering quality-related defects under normal use from the date of purchase. For products beyond the warranty period (excluding those that cannot be repaired), our company provides repair services and charges only for the cost of replacement parts.

Price Reference (so you know what to expect): The price of an LDA Type Electric Single-Girder Bridge Crane is calculated based on lifting capacity and span. A 5-ton model with a 12-meter span costs approximately 20,000–35,000 RMB; the same specification is around 25,000–40,000 RMB. As a factory-direct supplier, Kelude Heavy Industry offers wholesale pricing even for single-unit orders. Optional features are priced separately, with transparent cost differences.

Availability & Delivery Time: Common specifications are kept in stock. Delivery takes 7–10 days after parameters are confirmed. Custom non-standard manufacturing ships within 15–20 days. Every crane undergoes load testing before leaving the factory and comes with a Certificate of Conformity and inspection report.

VI. Component Breakdown

The LDA Type Electric Single-Girder Bridge Crane consists of three main parts: the bridge frame, the electric hoist, and the electrical system.

▎Bridge Frame
The main girder is a box-section structure welded from I-beam and steel plate. The end carriages are formed from rolled steel sections or bent steel plate. The main girder and end carriages are connected with high-strength bolts. The LDA Type bridge frame is simple in design, lightweight, and rigid — well suited for general workshop use with spans from 7 to 40 meters.

▎Electric Hoist
It is equipped with a CD1 Type (single-speed) or MD1 Type (two-speed) wire rope hoist that travels along the bottom flange of the I-beam main girder. The CD1 offers a lifting speed of 8 m/min for economical operation; the MD1 adds a 0.8 m/min creep speed for precise positioning during hoisting.

▎Electrical System
Powered by 380V three-phase supply with a 36V safe control voltage. Operation options include floor pendant control and wireless remote control, with variable frequency speed control available as an option. The control panel is fitted with master stop and start buttons for one-touch power cutoff in emergency situations.

VII. Why Choose Kelude Heavy Industry

Buying Guide — What to Focus on When Choosing a Single Girder Crane

1. Lifting Capacity — Base it on your heaviest load, then round up one tier
LDA Type cranes are commonly available in 1 to 20 tons. When selecting capacity, take 1.2 times the weight of your heaviest load in the workshop. For example, if your largest part weighs 5 tons, choose a 6-ton or 10-ton crane — leaving margin is far more cost-effective than upgrading later. If you anticipate heavier equipment in the future, it's more economical to size up from the start.

2. Span — Measure the rail center distance, don't guess
The span is the distance between the centerlines of the two crane rails — not the width of the building. Measure the actual rail distance and be precise to the centimeter. LDA Type standard spans range from 7 to 35 meters, with special spans available on request. Larger spans require a larger main girder section, which increases the price.

3. Operation Mode — Floor Pendant or Remote Control
Floor pendant (handheld control at ground level) is economical and straightforward, ideal for workshops with low hoisting frequency. Remote control offers greater flexibility since you don't have to follow the crane around — well suited for large work areas. You can also opt for dual operation (remote control with floor pendant as backup) for a few hundred RMB more — a small price for added peace of mind.

4. Duty Class — A3 is sufficient, A4 for heavier use
For most workshops operating less than 8 hours a day, Duty Class A3 is adequate. If the crane runs continuously (8+ hours daily with frequent start/stop cycles), we recommend A4 or higher. LDA Type cranes come standard with A3 classification, but can be upgraded to A4 or A5 at minimal additional cost.

FAQ

Q: What's the difference between the LDA Type and LD Type single girder cranes?
A: The LDA Type is an upgraded version of the LD Type, with the main differences in the end carriage structure and travel mechanism. The LDA Type features an improved end carriage and an integrated drive unit, resulting in smoother operation and lower noise. The LDA Type fully covers the LD Type's specification range for lifting capacities from 1 to 20 tons, and comes standard with dual operation modes — remote control plus floor pendant. Currently, virtually all cranes sold on the market are LDA Type; the LD Type has been gradually phased out.

Q: What is the maximum span available for the LDA Type single girder bridge crane?
A: Standard spans range from 7 to 40 meters. The maximum span decreases as lifting capacity increases. For 1–5 ton cranes, the maximum span is approximately 30 meters; for 10 tons, about 25 meters; and for 16–20 tons, around 22 meters. If your facility requires an extra-large span (over 30 meters), we recommend considering the LH Type hoist bridge crane or the QB Type bridge crane. The exact span should be based on the actual dimensions of the building's corbels — we suggest measuring first before placing an order.

Q: How much does an LDA Type electric single girder crane cost?
A: Pricing varies significantly based on lifting capacity, span, and configuration. Reference ranges: 1 ton × 7 m approximately 15,000–20,000 RMB; 5 tons × 15 m approximately 30,000–50,000 RMB; 10 tons × 22.5 m approximately 60,000–90,000 RMB; 20 tons × 30 m approximately 110,000–150,000 RMB. Prices include the crane body, electric hoist, remote control, and transport, but exclude rail installation. For a specific quotation, please provide the lifting capacity, span, and lifting height.