Explosion-Proof Electric Hoist BCD/HB: Protection Class and Price
Key Points Explosion-proof electric hoists are manufactured to GB/T 3836 (formerly GB 3836-2000) standards, featuring flameproof enclosures and non-sparking materials to prevent ignition of explosive atmospheres. The two main series are the BCD type (explosion-proof wire rope hoist for chemical plants and general industrial use, rated ExdⅡBT4~CT4) and the HB type (mining-rated explosion-proof hoist for underground coal mines, carrying the MA safety certification). Pricing runs 50–100% higher than equivalent-capacity non-explosion-proof models, with HB units costing 20–50% more than BCD units.
Explosion-proof electric hoists are lifting machines engineered specifically for hazardous environments where explosive gases, dust, or other flammable substances may be present. They are widely deployed in chemical plants, oil refineries, underground coal mines, munitions factories, LPG stations, and other locations with flammable and explosive risks. The defining feature of an explosion-proof hoist is that all exposed components are made from non-sparking materials, while the electrical system is housed in a flameproof enclosure—eliminating any potential ignition source at the design level. Kelude Heavy Industry manufactures a full range of certified explosion-proof electric hoists. Both the BCD and HB series are approved by the National Supervision and Inspection Center for Explosion-Proof Electrical Products and are fully insured by PICC.
1. BCD Series Explosion-Proof Wire Rope Hoist
The BCD series explosion-proof wire rope hoist (also referred to as the BCD single-speed explosion-proof hoist) is a standard explosion-proof hoist built on the CD1 platform with added flameproof protection. It offers lifting capacities from 0.5 to 20 tons and carries explosion protection ratings from ExdⅡBT4 to ExdⅡCT4, making it suitable for most explosive gas environments outside of underground coal mining—including chemical, petrochemical, pharmaceutical, and paint shop applications. Key structural features include a high-strength cast-iron flameproof enclosure, a flameproof conical rotor hoisting motor, and flameproof or increased-safety designs applied throughout the travel motor, electrical cabinet, control pendant, and limit switches. Exposed parts such as the wire rope and hook are made from non-sparking materials like copper alloy to prevent friction or impact sparks.
BCD series hoists typically cost 50–100% more than equivalent-capacity CD1 models: a BCD-1t runs approximately $900–$1,800, a BCD-5t about $2,200–$4,500, and a BCD-10t roughly $4,500–$8,900. Higher explosion protection classes (ExdⅡCT4 > BT4) command a premium of approximately 15–25%. Users must select the appropriate protection class based on the specific gas group present in their environment; refer to GB/T 3836.1-2021 Appendix B for gas group classification.
2. HB Series Mining Explosion-Proof Hoist
The HB series mining explosion-proof hoist is purpose-built for explosive methane atmospheres in underground coal mines. It offers lifting capacities from 0.5 to 25 tons and is available with protection ratings up to ExdⅠ (for coal mining) and ExdⅡCT4 (for chemical applications). The key distinction between HB and BCD models is that HB units must hold a valid National Mining Safety Certification (MA mark), confirming compliance with coal mine safety regulations (AQ standards) and certifying safe use in underground mine galleries where methane and other explosive gases may accumulate. Structurally, HB hoists incorporate additional sealing and protective measures across the motor, electrical system, and braking system to withstand the high humidity, heavy coal dust, and fluctuating power supply typical of underground operations.
HB series hoists cost 20–50% more than BCD models, with the price gap widening as lifting capacity increases. A critical certification requirement: the MA certificate must be valid and must correspond to the exact model being purchased. Explosion-proof hoists without the MA mark are strictly prohibited from use in underground coal mines. Kelude Heavy Industry can provide copies of the MA certificate for verification upon request.
3. Suitable Operating Environments
Selection of an explosion-proof hoist must be based on the hazardous area classification of the installation site. Per GB 50058-2014 (Code for Design of Electrical Installations in Explosive Atmospheres), hazardous areas are divided into Zones 0, 1, and 2 for gas environments and Zones 20, 21, and 22 for dusty environments. BCD series hoists are suitable for Zones 1 and 2, while HB series hoists are designed for Zone 1 in underground coal mines where gas accumulation is a risk. When specifying a hoist, the following parameters must be defined: ① the classification of the explosive substance (Group ⅡA/ⅡB/ⅡC), ② the temperature class (T1–T6), ③ the zone rating (0/1/2), and ④ whether dust explosion-proof protection is required. The Kelude Heavy Industry technical team can recommend the correct explosion protection class based on the environmental data you provide.
4. Model Comparison: BCD vs. HB Series
| Parameter | BCD Series | HB Series |
|---|---|---|
| Primary Application | Chemical plants, oil refineries, pharmaceuticals, paint shops | Underground coal mines, explosive gas atmospheres |
| Lifting Capacity | 0.5–20 t | 0.5–25 t |
| Explosion Protection Class | ExdⅡBT4 – ExdⅡCT4 | ExdⅠ (mining), ExdⅡCT4 (chemical) |
| Required Certification | National explosion-proof product certification | National Mining Safety Certification (MA mark) |
| Relative Price | Baseline (reference) | 20–50% higher than BCD |
| Comparison Item | BCD Type Explosion-Proof Hoist | HBMining Type Explosion-Proof Hoist | Non-Explosion-proof CD1 Type |
|---|---|---|---|
| Applicable Environment | Chemical Industry/Petroleum/Pharmaceutical1/2Zone | Underground Coal Mine1Zone | Non-Explosive Atmosphere Location |
| Explosion Protection Class | ExdⅡBT4~CT4 | ExdⅠ~ExdⅡCT4 | Without |
| certification requirements | Explosion Proof Certificate+3C | MA Certification (Coal Mine Safety Approval)(MA)+Explosion Proof Certificate | Type Test Certificate of Conformity |
| Price(5tReference) | 15,000~30,000CNY | 20,000~40,000CNY | 8,000~15,000CNY |
| Lifting Capacity Range | 0.5~20t | 0.5~25t | 0.5~20t |
| scope of application | Chemical Plant/Munitions Factory/Paint Shop Workshop | Underground Coal Mine and Gasous Environment | General Purpose Factory/Warehouse/Dock / Wharf |
5. Explosion-Proof Electric Hoist Data Card
ExdⅡBT4 Standard Explosion Protection Class BCD Type Standard ExdⅡBT4, Maximum ExdⅡCT4Applicable to Acetylene/Hydrogen | 50~100% Explosion-proof Premium BCD Type Compared to CD1More Expensive50~100%, HBType Compared to BCDMore Expensive20~50% | MA Certification (Coal Mine Safety Approval) HBMandatory for Type Certification HBMining Type Explosion-Proof Hoist Valid MA Certificate Required, Operation Underground Prohibited Without Certificate |
1/2Zone Applicable Area BCD Typeapplicable to1Zone and2Zone Explosion Hazardous area | Non-Sparking Materialdesign Exposed Component Adopt / Utilizecopper alloy Non-Sparking Materials such as, anti-collision Non-Sparking | 0.5~25t Lifting Capacity Range BCD 0.5~20t, HB 0.5~25tcoverage Comprehensive |
Explosion-Proof Electric Hoist FAQ
Q: How much does an explosion-proof electric hoist cost?
A: Explosion-proof electric hoists are priced higher than standard hoists of the same capacity: BCD 1t models range from approximately $900 to $1,800, BCD 5t models from $2,200 to $4,500, and BCD 10t models from $4,500 to $8,900. That's roughly 50–100% more than equivalent CD1 hoists. HB mining-duty models cost 20–50% more than BCD models. Kelude Heavy Industry manufactures certified units and can customize hoists to meet specific Explosion Protection Classes.
Q: What's the difference between an explosion-proof electric hoist and a standard electric hoist?
A: Four key differences: ① Housing — explosion-proof models use a flameproof cast-iron enclosure that contains any internal explosion without propagating it externally; ② Materials — exposed components are made from non-sparking materials such as copper alloy; ③ Electricals — the motor, push-button station, limit switches, and all other electrical components carry flameproof certification; ④ Certification — explosion-proof hoists must hold an Explosion Proof Certificate (BCD) or a mining safety certificate (HB). Standard hoists must never be used in hazardous areas.
Q: How much does a 1t explosion-proof electric hoist cost?
A: A BCD-type 1t explosion-proof electric hoist typically costs between $900 and $1,800. The final price depends on the Explosion Protection Class (ExdⅡBT4 or CT4), Lifting Height (6–30 m), whether a trolley and remote control are included, and other configuration options. An HB mining-duty 1t model runs from about $1,200 to $2,200. Kelude Heavy Industry offers free Technical consultation and quotations.
Q: Does an explosion-proof electric hoist require mandatory inspection?
A: An explosion-proof electric hoist itself is not classified as special equipment and does not require separate registration. However, when installed on a crane with a rated capacity of 3t or more, the complete crane falls under special equipment management, and the hoist's explosion-proof performance must undergo a special inspection during periodic inspections. Inspection items include verification of explosion-proof parameters (flameproof joint gaps, gasket condition, cable entry devices, etc.). The user unit should also perform its own annual checks on explosion-proof performance.
Kelude Heavy Industry's BCD-type explosion-proof electric hoists and HB-type mining-duty explosion-proof electric hoists are both certified by the National Explosion-Proof Electrical Quality Supervision Inspection Center, insured by PICC, and backed by a 12-month warranty. For more details, see the product pages: BCD-type explosion-proof electric hoist and HB-type mining-duty explosion-proof electric hoist.
