Electric Hoist

Explosion Proof Hoist

An explosion proof hoist is a type of lifting equipment specifically designed for use in flammable, explosive, and dusty environments. It is widely used in the petroleum and chemical industry, coal mines, the military industry, the pharmaceutical industry, warehousing, and other places where flammable gas, steam, or dust exists.

  • Lifting Capacity: 1 ~ 35 tons
  • Explosion-Proof Grades: Ex d IIB T4 Gb / Ex d IIC T4 Gb / Ex tD A21 IP65
  • Industrial Power Supply: 220V–690V, 50/60Hz, 3-Phase (Customized to local grid)

Below you will find the complete technical specifications, working duties, and hazardous-zone selection criteria for VOITTO’s three explosion-proof lifting series—Explosion-proof Wire Rope Hoists (1–35T), European Low-Headroom Explosion-Proof Hoists, and Spark-Resistant Electric Chain Hoists (0.5–35T). We also break down the differences between Ex d IIB T4 (gas), Ex d IIC T4 (hydrogen/acetylene), and Ex tD A21 (combustible dust) standards so you can configure a fully compliant lifting solution for your chemical, oil & gas, or dust-heavy workshop.

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Product Introduction

VOITTO Explosion Proof Hoist (also known as a flameproof hoist or spark-resistant electric hoist) is heavy-duty lifting equipment engineered specifically for hazardous, flammable, explosive gas (Zone 1 & Zone 2) and combustible dust (Zone 21 & Zone 22) environments. Built strictly in compliance with ATEX, IECEx, and GB3836 standards, our explosion-proof lifting solutions eliminate electrical arcs and mechanical friction sparks to ensure 100% operational safety in chemical plants, oil refineries, coal mines, paint booths, and grain silos.

Explosion-proof hoists are usually used as lifting mechanisms and are installed on overhead cranes, gantry cranes, electric EOT Cranes, and cantilever cranes for supporting use. It is widely used in the petroleum, chemical industry, coal mine, military industry, pharmaceutical industry, warehousing, and other places where flammable gas, steam, or dust exists.

Type of Explosion-proof Hoist

An Explosion proof hoist is divided into different types, including explosion proof wire rope hoist, European explosion proof hoist, and explosion proof chain hoist. Different types of explosion-proof hoists use scenarios and structures that are also very different. The following sections will introduce you to the different types of explosion-proof hoists and their definitions, applications, and specifications.

HB Type Explosion Proof Wire Rope Hoist

Explosion Proof Wire Rope Hoist

Designed for medium-to-heavy lifting in hazardous locations, the HB/BCD explosion-proof wire rope hoist features an integral flameproof enclosure (Ex d). All exposed rotating parts—including the trolley wheels and hook assembly—are available with spark-resistant bronze alloys or stainless steel cladding to prevent mechanical impact sparks. It can be mounted on a fixed frame, monorail I-beam, or integrated into an LB Explosion Proof Single Girder Overhead Crane.

Application: Explosion-proof wire rope hoists are suitable for use in explosive environments such as petroleum, chemical, coal mining, natural gas, and pharmaceuticals, and require large-tonnage lifting work.

Features: An explosion-proof wire rope hoist has the advantages of large load capacity, high lifting height, economy, and practicality. Its load capacity ranges from 1 ton to 32 tons, and the lifting height can reach 30 meters.

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Specification

TypeHB Type Explosion Proof Wire Rope Hoist
Lifting Capacity1-32 ton
Lifting Height6-30 M
Hoisting Speed5/0.8 M/MIN
Working ClassM3
Ambient Temperature-25℃ to 80℃
Explosion-proof gradeExdⅡBT4、ExdⅡCT4
The above parameters support customization.

European Type Explosion Proof Hoist (Low Headroom & VFD Control)

European Explosion Proof Hoist

Engineered for modern workshops with limited ceiling height, the European explosion-proof electric hoist adopts a compact, C-type modular structure that maximizes hook approach and lifting height. Equipped with explosion-proof variable frequency drives (VFDs) for smooth dual-speed or stepless travel, it minimizes load swing when handling volatile chemical containers or precision machinery in Zone 1 and Zone 2 areas.

Application: European explosion-proof hoists are suitable for high-risk, high-cleanliness, high-efficiency scenarios, and limited space, such as petrochemical, natural gas, pharmaceutical, military, port, and new energy industries.

Features: European explosion-proof hoists have advantages such as a compact structure, high load capacity, stable operation, and maintenance-free operation. They are the preferred solution for high-frequency use scenarios.

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Specification

TypeEuropean Explosion Proof Hoist
Lifting Capacity3-32 ton
Lifting Height5-18 M
Hoisting Speed1-10 M/MIN
Working ClassM5
Ambient Temperature-20℃ to 80℃
Explosion-proof gradeExdⅡBT4、ExdⅡCT4
The above parameters support customization.

HBS Explosion Proof Electric Chain Hoist (0.5 Ton – 35 Ton)

Explosion Proof Chain Hoist

For compact workstations, maintenance platforms, and chemical dosing rooms, VOITTO explosion-proof electric chain hoist offers exceptional flexibility and durability. It comes equipped with a copper-plated or stainless steel spark-resistant load chain, a heavy-duty dustproof/flameproof motor brake, and an ergonomic explosion-proof pendant controller (IP65/IP66).

Application: Explosion-proof chain hoists are primarily used in flammable and explosive environments, such as the petroleum, chemical, and coal mining industries. It is particularly suitable for places with limited space, small and medium tonnage, frequent operations, and flammable and explosive dust.

Features: It has the characteristics of high safety, light weight, easy operation, and high load capacity. It has a lifting height and load capacity that support non-standard customization.

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Specification

TypeHBS Type Explosion-Proof Chain Hoist
Load capacity1-35 ton
Lifting height3-12 m
Lifting speed1.8-8 m/min
Ambient Temperature-20℃ to 40℃
Work dutyM4,M5
Explosion-proof gradeExdⅡBT4、ExdⅡCT4
The above parameters support customization.

Explosion-Proof Standards & Grade Selection Guide

Choosing the right explosion-proof classification is critical for site compliance and safety inspections. VOITTO customizes hoists according to the specific explosive gas mixtures or combustible dust present in your facility:

Ex Grade MarkingApplicable Hazardous ZoneTypical Explosive Medium / GasTypical Industry Applications
Ex d IIB T4 GbZone 1 & Zone 2 (Gas)Propane, Ethylene, Methane, Coal Gas, Petroleum VaporsOil & gas refineries, petrochemical plants, wastewater treatment, liquefied gas stations
Ex d IIC T4 GbZone 1 & Zone 2 (High-Risk Gas)Hydrogen (H2), Acetylene (C2H2), Carbon DisulfideHydrogen energy plants, battery manufacturing, fine chemical synthesis, aerospace fuel workshops
Ex tD A21 IP65 T135°CZone 21 & Zone 22 (Dust)Coal dust, grain/flour dust, aluminum/magnesium powder, plastic dustGrain silos, flour mills, coal handling plants, pharmaceutical & powder coating workshops

Core Spark-Resistant & Flameproof Safety Features

  • Explosion-proof Electrical Enclosure (Ex d): The motor, brake, and control panel are all housed within a reinforced cast iron or welded steel explosion-proof enclosure, which confines any electrical sparks generated internally within the enclosure, preventing them from igniting the surrounding gas.
  • Spark-proof Mechanical Components: The trolley wheels, flanges, and safety latches are made of beryllium bronze, aluminum bronze, or stainless steel, designed to eliminate friction sparks that may occur when they come into contact with steel track beams.
  • Dual Explosion-Proof Limit Switches: The entire unit is equipped with upper and lower limit rotary switches and travel limit switches, which effectively prevent over-lifting and avoid cable damage.
  • Overload and Thermal Protection: Integrated explosion-proof load limiter and motor winding thermal protection (with T1–T4 temperature control).

Customized Explosion proof Hoist Manufacturer and Supplier

As a direct factory manufacturer, VOITTO provides tailor-made explosion-proof lifting systems. To get an accurate quotation and technical drawing within 24 hours, simply share the details you have (our engineers will help you determine the rest):

  • Lifting Capacity & Height: e.g., 5 Ton, 6m / 9m / 12m lifting height.
  • Hoist Type Preference: Wire rope hoist, European low-headroom hoist, or electric chain hoist (Fixed suspension or with motorized trolley).
  • Hazardous Environment / Ex Grade: Tell us your required mark (Ex d IIB T4 / Ex d IIC T4 / ATEX Zone 1/2) OR simply tell us what gas, liquid, or dust is in your workshop, and our engineers will match the right standard for you.
  • Industrial Power Supply: e.g., 380V / 400V / 415V / 440V / 480V, 50Hz / 60Hz, 3-Phase.
  • Working Duty / Daily Usage: How many hours per day does the hoist run, and does it require dual-speed or VFD control?
Alan

Alan

Crane Solutions Specialist · Voitto Crane

10+Years Exp.
5,000+Customers
50+Countries

Specialized in Overhead Crane, Gantry Crane, Jib Crane, Port Crane & EOT Crane export solutions. 10+ years helping global clients with pre-sales consultation, capacity selection and site-specific configurations.

FAQ

What is the difference between Ex d IIB T4 and Ex d IIC T4 explosion proof hoists?

Both are designed for Zone 1 and Zone 2 explosive gas environments with a maximum surface temperature below 135°C (T4). However, Ex d IIC T4 offers a higher safety level specifically required for extremely volatile gases with low ignition energy, such as hydrogen (H2) and acetylene (C2H2), whereas Ex d IIB T4 covers standard petrochemical gases like propane, ethylene, and natural gas.

What certifications do VOITTO explosion proof hoists come with?

Every explosion-proof hoist comes with an official Explosion-Proof Conformity Certificate, factory load test report, CE certification, and ISO9001 quality documentation. We also support third-party inspection and ATEX/IECEx-compliant configurations for European, Middle Eastern, and global projects.

How do you prevent mechanical sparks during hoist operation?

In addition to flameproof electrical enclosures, we prevent mechanical sparks by using bronze alloy (aluminum bronze / beryllium bronze) or stainless steel for high-friction parts, including trolley wheels, hook safety latches, rope guides, and copper-plated load chains.

What is the typical production lead time for a customized explosion proof hoist?

For standard Ex d IIB T4 models (1–10 Ton), our factory lead time is 15–25 working days. For customized Ex d IIC T4, European low-headroom models, or special voltage specifications, production takes 20–35 working days.

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service

Exclusive and Considerable, Customer First.
01
Reliable and Customized Solutions

Our pre-sale team provides consultations, tailoring solutions to your needs and environment.

Offer customization options for lifting capacity, span and lifting height etc. to meet specific needs.

02
Updated Production Process

Real-Time Progress Updates: Weekly reports and PM communication.

Pre-Delivery Testing: 100% load & safety checks, detailed reports.

03
Trustworthy After-Sale Support

3-5 years warranty and free replacement for non-manufacturing defects.

24/7 online support and on-site assistance for crane issues.

FAQ

Engineered Strength, Global Crane Supplier
What’s the delivery time for an overseas order?

Transit time varies depending on many factors, including the destination of the goods, distance, shipping method and shipping service provider, etc. Generally speaking, international shipping may take about a month.

What’s included in your after-sales service?

We offer comprehensive after-sales service, including regular maintenance, rapid technical support, and spare parts supply. The standard warranty period is 1 year, with options for extension based on your needs.

Do you ship internationally?

Yes, international shipping and export support are available for global customers.

Get In Touch

Please feel free to leave a message. We will reply in 24 hours.
Please specify your requirement by referring to the following aspects:
  • Which crane product do you need?
  • What is the maximum lifting capacity (in tons) required for your project?
  • Could you specify the lifting height (in meters) needed?
  • Can you provide details on the working environment, such as ground conditions, space limitations, and any obstacles?
  • What is the expected frequency of use and the duration of the project?
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