Explosion Proof Manual Chain Hoist 0.5T–20T

Explosion-Proof Performance: Made with spark-resistant materials such as beryllium bronze and aluminum bronze to prevent ignition risks during operation.
Durable Structure: High-strength explosion-proof chain, forged hooks, and reinforced housing ensure reliable lifting performance and long service life.
Safe Manual Operation: No power supply required, with smooth transmission and stable lifting for hazardous working environments.
Wide Industrial Applications: Designed for oil, chemical, mining, marine, pharmaceutical, and other industries requiring high safety standards.

Product Detail

Spark-Resistant Chain Block Description

Explosion Proof Manual Chain Hoist from Benteng Hoist is a specialized, spark-resistant hand-operated lifting device designed for hazardous industrial environments containing flammable gases, combustible vapors, or explosive dust. Engineered in strict accordance with international explosion-proof standards (such as ATEX / IECEx guidelines), this high-safety manual chain block prevents mechanical sparks caused by friction or impact during heavy lifting operations.

Constructed with non-sparking copper-alloy coated surface components, high-tensile G80 load chain, and a enclosed dual-pawl mechanical braking system, this high-performance hand hoist ensures smooth load control and millimeter-precise positioning without requiring electric power. The explosion proof chain block is an indispensable lifting tool for refineries, offshore oil platforms, chemical processing plants, grain silos, and underground mining shafts.

Key Advantages

Spark-Resistant Safety Construction: Outer shell, load hooks, and handwheel are treated with spark-proof bronze/copper plating or specialized alloy materials to prevent friction sparks.
Zero Electrical Ignition Risk: Fully manual operation eliminates electrical arcs and thermal hazards, providing max safety in Zone 1, Zone 2, Zone 21, and Zone 22 hazardous areas.
High Load Transmission Efficiency: Precision-machined spur gears deliver smooth mechanical transfer with low operator pulling effort, even at maximum tonnage.
Durable & Corrosion-Resistant Casing: Sealed housing protects internal drive mechanisms from chemical fumes, humidity, abrasive dust, and salt spray.
Complete Capacity Range (0.5T to 20T): Complete payload availability from 0.5 Ton up to 20 Tons satisfies versatile maintenance and heavy rigging demands.

Product Specifications

Model	0.5T	1T	2T	3T	5T	7.5T	10T	20T
Capacity (t)	0.5	1	2	3	5	7.5	10	20
Lifting height (m)	2.5	2.5	2.5	3	3	3	3	3
Test load (t)	0.75	1.5	3	4.5	7.5	11.2	12.5	25
No. of load chain fall lines	1	1	2	2	2	3	4	8

Industrial Applications

The explosion proof manual chain hoist is engineered for hazardous environments where electric equipment is restricted or unsafe:

Oil & Gas Refineries & Offshore Platforms: Pipeline positioning, valve replacement, and pump maintenance on rigs and gas processing facilities.
Chemical Plants & Pharmaceutical Facilities: Handling reactor vessels, chemical drums, and mixing equipment amidst solvent vapors or volatile dust.
Coal Mining & Underground Shafts: Equipment installation and structural rigging in enclosed shafts containing methane gas or coal dust.
Paint Shops, Depots & Military Facilities: Material handling inside dangerous goods storage depots, fuel stations, and munitions handling areas.

Products Details

H62 brass thickened cover compact without rolled edges

Needle roller bearing guide chain wheel is smooth and does not get stuck in the chain

Explosion proof material chain, friction between chains without sparks

High strength forged hook with strong toughness and not easy to break

Internal Structure

Spark-Resistant Top & Bottom Hooks: Drop-forged safety hooks coated with copper-aluminum alloy or beryllium bronze layer to avoid impact sparks during rigging.
Enclosed Anti-Spark Housing: Heavy-duty casing encloses internal spur gears, protecting drive mechanisms from corrosive gases and preventing external dust accumulation.
Corrosion & Spark Resistant Load Chain: High-tensile alloy steel chain treated with specialized surface platings (dromet or copper coating) for anti-friction and corrosion defense.
Spark-Proof Handwheel & Zipper Chain: Non-sparking hand zipper chain and wheel guide ensure safe manual pulling in flammable atmospheres.

Safety Testing & Quality Control

As a dedicated explosion-proof lifting equipment manufacturer, Benteng Hoist enforces strict safety verification protocols across every production batch:

Factory Overload Proof Testing: Every unit undergoes dynamic and static load tests under 125%–150% rated capacity prior to shipment.
Spark & Friction Testing: Surface coatings and hook contact points undergo rigorous anti-friction and non-sparking material checks.
Braking Hold Verification: Enclosed dual-pawl friction braking mechanisms are tested under full load to ensure zero slippage in hazardous environments.

OEM Customization & B2B Solutions

Benteng Hoist provides full OEM and private-label manufacturing options for global energy contractors, chemical plant suppliers, and rigging distributors:

Custom Lift Heights: Load chains and hand chains customized to any required operational height (e.g., 3m, 6m, 9m, 12m, or higher).
Optional Explosion-Proof Trolley Package: Combined supply with spark-resistant manual push or geared beam trolleys for monorail travel.
Tailored Material Coatings: Beryllium bronze, aluminum bronze, or stainless steel surface options based on site gas classification.
Custom Nameplates & Export Packaging: Private-label etching, custom metal Ex-rating plates, and reinforced export wooden crates.

Frequently Asked Questions

Q1: What makes an explosion proof manual chain hoist different from a standard hoist?

A: An explosion-proof hoist utilizes non-sparking materials (such as bronze/copper alloy platings) on hooks, handwheels, and casing friction points to prevent mechanical sparks caused by collisions or friction in flammable gas/dust environments.

Q2: In which hazardous zones can this spark-resistant chain block be used?

A: It is designed for use in hazardous areas such as Zone 1, Zone 2 (gas atmospheres) and Zone 21, Zone 22 (dust atmospheres), commonly found in oil refineries, chemical plants, and paint storage facilities.

Q3: Does the explosion proof hoist require electric power?

A: No. It is 100% manually operated, making it inherently safer for off-grid hazardous sites, confined vaults, and emergency maintenance without risk of electrical sparking.

Q4: Can the explosion proof manual chain hoist be paired with a beam trolley?

A: Yes. Benteng Hoist supplies matching explosion-proof push or geared beam trolleys equipped with non-sparking wheels for horizontal beam travel.

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