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LDG High-Temperature Electric Single Girder Crane

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When the crane’s hook and wire rope are used in high-temperature environments, they are directly or indirectly subjected to cyclical exposure to intense heat. These harsh conditions can affect the strength of metal components, leading to changes in their material properties, structure, and physical performance.

As industrialization accelerates, the operating conditions for special equipment are becoming increasingly complex. To address these challenges, LDG high-temperature electric cranes have been developed.

Basic Parameters of LDG High-Temperature Electric Single Girder Crane

Parameter
Value Range
Description
Rated Lifting Capacity
1–16 t
According to metallurgical standards, the lifting capacity of single girder cranes must not exceed 16 tons.
Span
7.5–28.5 m
Limited by the span dimensions of the workshop.
Lifting Height
6 / 9 / 12 m
In high-temperature environments, a safe distance (≥2 m) between the hook and the heat source must be maintained.
Duty Class
A3–A6 (light to medium duty)
For single girder cranes used to handle molten liquid metal, duty class is designed to A6 to enhance structural fatigue resistance.
Ambient Temperature
≤ +50 °C
The distance from the heat source and the duration of continuous high temperatures should be specified.

Features of LDG High-Temperature Electric Single Girder Crane

Structural Design

The welds between the web plate and flange plate adopt full penetration welding. Post-weld heat treatment is applied to relieve stress and prevent deformation under high-temperature conditions.

The underside of the main girder and the outer sides of the end girders are lined with aluminum silicate fiber felt for thermal insulation.

Key components such as motors and gearboxes are equipped with detachable thermal insulation covers to protect them from heat radiation damage.

Key Components Upgraded for High-Temperature Resistance

Component
Standard LD Configuration
LDG High-Temperature Configuration
Motor
Standard motor
High-temperature motor (H-class insulation), built-in temperature sensor (overheat alarm), protection class IP54
Wire Rope
6×19+FC standard wire rope
6×37+IWR wire rope with metal core, coated with high-temperature-resistant grease
Wheel Set
Standard quenched steel
High-strength quenched steel, surface hardness ≥HRC55 to prevent softening under high temperatures
Electrical System
Standard distribution box
Explosion-proof temperature-controlled distribution box; cables made of high-temperature-resistant silicone rubber
Application of LDG High-Temperature Electric Single Girder Crane in Smelting Workshops
Application of LDG High-Temperature Electric Single Girder Crane in Smelting Workshops

What Are the Differences Between the LDG High-Temperature Electric Single Girder Crane and the Standard LD Electric Single Girder Crane?

Comparison Item
Standard LD Electric Single Girder Crane
LDG High-Temperature Electric Single Girder Crane
Ambient Temperature Range
-20 °C ~ +40 °C
≤ +50 °C
Motor Insulation Class
Class B
Class H, with temperature protection
Manufacturing Cost
Baseline cost
30%–50% higher cost (due to thermal insulation system and high-temperature-resistant components)
Typical Failure Risk
Motor overload (more likely in high-temperature environments)
Deformation of main girder caused by failure of thermal insulation layer

How to Select a Suitable LDG High-Temperature Electric Single Girder Crane

Determining Core Parameters

Include both the weight of the materials and the lifting devices.

Determine based on the column spacing of the workshop and the height of heat sources.

For high-temperature workshops, choose between Class A3 – A6.

High-Temperature Adaptability Configurations

Component
Key Requirements
Main Girder
Equipped with a thermal insulation layer at the bottom to prevent damage from high temperatures.
Motor
Insulation class H, protection rating IP54.
Wire Rope
6×37+IWR wire rope with metal core, coated with high-temperature-resistant grease.
Electrical System
Silicone rubber cables; control cabinet fitted with a temperature-controlled fan.

Configurations for Special Operating Conditions

Add high-temperature-resistant dust covers.

Apply epoxy zinc-rich primer and fluorocarbon topcoat to metal surfaces.

Comply with ATEX standards; motor with Ex d certification.

Industry Application Case

Continuous Casting Workshop of a Steel Plant

Working Conditions:

Located 5 m from the continuous caster, ambient temperature 50 °C, used for lifting cast billets (lifting capacity: 16 t; span: 22.5 m).

Configuration:

Model LDG-16t-22.5m-A5, equipped with a 50 mm thick thermal insulation layer at the bottom of the main girder and a motor with forced air cooling. The crane has been operating reliably for 5 years.

The above content introduces the LDG High-Temperature Electric Single Girder Crane. If you’re interested in cranes designed for operation in hazardous environments, be sure to check out our related blog: “How the LB Explosion-Proof Electric Single Girder Crane Handles Flammable and Explosive Hazards.

About Us

Henan Huasui Heavy Industry Machinery Equipment Co., Ltd. specializes in the design and manufacture of LDG high-temperature electric single girder cranes, engineered specifically for metallurgical, foundry, and other extreme high-temperature applications.

With a team of over 100 professional engineers, HSCRANE has delivered streamlined and customized high-temperature handling solutions to more than 200 enterprises worldwide—making workshops more efficient and prolonging equipment service life.

—Choose HSCRANE, choose reliability!
If you have any questions or requirements regarding high-temperature cranes, contact us today!

Anni Zhang
Expert in Overhead Crane/Gantry Crane/Jib Crane/Crane Parts Solutions

With 10+ years of experience in the Crane Overseas Export Industry, helped 10,000+ customers with their pre-sales questions and concerns, if you have any related needs, please feel free to contact me!

Contact Details

HSCRANE specializes in delivering premium overhead lifting systems and integrated industrial solutions. With a global footprint spanning 100+ nations and recognition from 5,000+ enterprises worldwide, our engineering expertise has established us as a trusted partner in material handling innovation.

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