Electric Chain Hoist - Weihua Crane

What Is an Electric Chain Hoist?

An electric chain hoist — also referred to as an electric hoist, motorized chain hoist, or electric chain block — is a mechanical lifting device powered by an electric motor. It uses a motor-driven sprocket to move a high-strength load chain, enabling the controlled vertical movement of heavy loads at the push of a button.

Unlike manual chain hoists that rely entirely on human effort, an electric chain hoist delivers consistent lifting speed, lower operator fatigue, and the ability to perform a high volume of lifts continuously throughout the working day. Electric chain hoists are commonly mounted on fixed beams, monorail systems, or overhead traveling cranes to form a complete material handling solution.

Why Choose an Electric Chain Hoist?

Push-button operation — minimal operator effort for every lift
High lifting speed — 3 to 12 m/min for efficient throughput
Consistent performance — same speed and force on every cycle
Suitable for high-frequency use — rated for 50+ lifts per day
Precise load positioning — dual-speed models allow fine adjustment
Easily integrated with overhead crane systems and automation lines

Tipos

Peças

Princípio de funcionamento

Types of Electric Chain Hoists

Weihua electric chain hoists are available in multiple configurations to match a wide range of operating conditions, installation requirements, and load capacities.

By Mounting and Travel Configuration

Tipo	Descrição	Ideal para
Stationary Electric Chain Hoist	Fixed mounting; lifts vertically in one position	Press shops, assembly stations, maintenance pits
Push Travel Electric Chain Hoist	Manually pushed along a monorail beam	Small workshops, low-frequency lateral movement
Motor Travel Electric Chain Hoist	Motorized trolley for powered beam travel	Production lines requiring frequent horizontal positioning
Low Headroom Electric Chain Hoist	Compact design with reduced hook-to-hook distance	Facilities with limited vertical clearance
Double Rail Electric Chain Hoist	Runs on double-girder overhead crane bridge	Heavy-duty applications, large crane spans

By Phase and Voltage

Fonte de Alimentação	Typical Voltage	Aplicação
Single-phase	110 V / 220 V	Light workshops, small facilities
Three-phase	380 V / 415 V / 440 V	Industrial standard; most common configuration
Custom voltage	On request	Export markets, special installations

Por capacidade nominal

Faixa de capacidade	Modelos típicos	Aplicações comuns
Serviço leve	0.1 t / 0.25 t / 0.5 t	Electronics, light assembly, small parts
Serviço médio	1 t / 2 t / 3 t	Machining, warehousing, vehicle assembly
Resistente	5 t / 10 t / 16 t	Steel fabrication, heavy equipment
Extra resistente	20 t / 32 t	Shipyards, foundries, heavy industry

By Special Application

Tipo	Descrição	Ideal para
Explosion-Proof Electric Chain Hoist	ATEX-rated motor and enclosure	Petrochemical, pharmaceutical, mining
Stainless Steel Electric Chain Hoist	Corrosion-resistant materials throughout	Food processing, pharmaceutical, marine
Variable Frequency Electric Chain Hoist	VFD-controlled motor for stepless speed adjustment	Precision assembly, fragile load handling
Ultra-Low Headroom Electric Chain Hoist	Minimum possible hook-to-hook distance	Extremely space-constrained environments

Key Components of an Electric Chain Hoist

Each component of an electric chain hoist plays a critical role in delivering safe, reliable, and efficient lifting performance. Understanding these parts helps with correct installation, routine maintenance, and fault diagnosis.

Visão geral dos componentes

The operating principle of an electric chain hoist combines electric motor power, mechanical gear reduction, and electromagnetic braking into a compact, highly efficient lifting system.

Princípio de funcionamento passo a passo

How an Electric Chain Hoist Works

Step 1 — Operator Command: The operator presses the “up” or “down” button on the pendant control. This sends a signal to the motor contactor, which connects the electric motor to the power supply.

Step 2 — Motor Activation and Brake Release: The electric motor starts rotating. Simultaneously, the electromagnetic brake releases — the brake coil is energized, overcoming the spring force that holds the brake disc closed, allowing the drive shaft to rotate freely.

Step 3 — Gear Reduction and Torque Amplification: The motor drives the gearbox input shaft at full motor speed (typically 1,400–2,800 RPM). The multi-stage helical gear reduction reduces this to a slow, high-torque output (typically 10–60 RPM at the sprocket), producing enough force to lift the rated load.

Step 4 — Chain Movement: The gearbox output drives the load chain sprocket, which engages the load chain. Depending on the motor rotation direction, the chain is either wound up (raising the load) or paid out (lowering the load) in a controlled, consistent motion.

Step 5 — Load Holding and Brake Engagement: When the operator releases the button, the motor stops and the electromagnetic brake engages instantly — the spring force clamps the brake disc, holding the load at its current height with zero drift.

Principais características e benefícios

Push-button operation — full up/down and travel control from a pendant or wireless remote; no physical effort required from the operator
High lifting speed — standard models lift at 3–8 m/min; dual-speed models add a slow creep speed (typically 1/6 of full speed) for precise positioning
Electromagnetic fail-safe brake — load is held securely at any height even during power interruption; no manual holding required
Built-in overload protection — mechanical slip clutch or electronic sensor prevents operation above rated capacity, protecting both equipment and personnel
Dual travel option — motor trolley models provide powered horizontal travel along beams, enabling full X-Y coverage of the work area
Compact and lightweight design — modern electric chain hoists are significantly smaller and lighter than wire rope hoists of equivalent capacity, reducing installation headroom requirements
VFD compatibility — variable frequency drive option enables smooth acceleration, precision positioning, and reduced mechanical wear
Low maintenance design — sealed gearbox with lifetime lubrication, IP55 motor protection, and Grade 80/100 load chain minimize routine maintenance requirements
Wide capacity range — single product family covers 0.1 t to 32 t, simplifying procurement and spare parts management
Wireless remote control (selecionar modelos) — allows the operator to move freely around the load for improved visibility and safety

Electric Chain Hoist vs. Manual Chain Hoist

Selecting the right hoist type is one of the most important decisions in any material handling project. The following comparison covers all key decision factors between electric and manual chain hoists.

Fator de comparação	Talha elétrica de corrente	Talha manual de corrente
Fonte de alimentação	Motor elétrico (trifásico ou monofásico)	Somente o poder humano
Operating speed	Fast: 3 – 12 m/min	Slow: 0.5 – 3 m/min
Operator effort	Minimal — push-button control	Moderate — repeated hand chain pulling
Lifting frequency	High — 50+ lifts/day sustained	Low to moderate — up to 20 lifts/day
Power dependency	Requires stable electrical supply	No power needed — works anywhere
Self-locking safety	Electromagnetic brake; fail-safe on power loss	Catraca mecânica; com travamento automático inerente.
Overload protection	Built-in (standard on most models)	Available on select models only
Positioning precision	High — dual speed / VFD option	Low — depends on operator feel
Product weight	Heavy: 20 – 200 kg	Light: 2.5 – 50 kg
Purchase cost	Higher: $150 – $8,000+	Lower: $30 – $800
Instalação	Requires beam, trolley, and electrical wiring	Instale e use — sem necessidade de configuração.
Manutenção	Higher — motor, brake, controls require servicing	Muito baixo — componentes mínimos
Noise level	ruído do motor em funcionamento	Quase silencioso
Operating temperature	−10 °C to +40 °C (standard motor)	−20 °C to +50 °C
Explosion-proof cost	High — full ATEX motor and enclosure required	Low — brass/aluminum components only
Service life	5 – 10 years (electrical components)	10 – 20 years (mechanical only)
Best suited for	Estações fixas, alta frequência, linhas automatizadas	Temporary, off-grid, low-frequency, hazardous zones

Quando escolher um guincho elétrico de corrente

A frequência de elevação excede 50 levantamentos por dia
A fixed overhead beam or monorail system is already in place or planned
Operator fatigue or labor efficiency is a concern
Precise load positioning is required (dual-speed or VFD models)
The application is part of an integrated overhead crane system

Quando escolher um guincho de corrente manual

A frequência de elevação é menos de 20 levantamentos por dia
Não há fornecimento de energia elétrica confiável disponível no local da obra.
The hoist must move between multiple locations
The environment is explosive or spark-sensitive
Initial investment budget is the primary constraint

Electric Chain Hoist Specifications

The tables below provide full technical specifications for Weihua standard, low-headroom, and explosion-proof electric chain hoist product lines.

Standard Electric Chain Hoist — Full Specification Table

Modelo	Capacidade nominal (t)	Altura do elevador (m)	Lifting Speed (m/min)	Motor Power (kW)	Voltage (V)	Diâmetro da corrente de carga (mm)	Chain Falls	Peso líquido (kg)
ECH-0.5	0.5	3 / 6	8 / 0.8	0.4	380	φ6.3	1	22
ECH-1	1	3 / 6	8 / 0.8	0.8	380	φ7.1	1	28
ECH-2	2	3 / 6	8 / 0.8	1.5	380	φ9	1	38
ECH-3	3	3 / 6	6 / 0.6	2.2	380	φ10	2	52
ECH-5	5	3 / 6	4 / 0.4	3.0	380	φ11,2	2	78
ECH-10	10	3 / 6	3.5 / 0.35	5.5	380	φ12.5	4	145
ECH-16	16	3 / 6	3 / 0.3	7.5	380	φ14	4	210
ECH-20	20	3 / 6	2.5 / 0.25	11	380	φ16	4×2	310

Dual lifting speed shown as full speed / creep speed. Single-speed models also available. Custom lift heights (6 m / 9 m / 12 m / 18 m / 24 m) on request.

Low Headroom Electric Chain Hoist — Specification Table

Modelo	Capacidade nominal (t)	Distância mínima do gancho (mm)	Altura do elevador (m)	Motor Power (kW)	Peso líquido (kg)
LHECH-0.5	0.5	320	3	0.4	26
LHECH-1	1	360	3	0.8	34
LHECH-2	2	410	3	1.5	46
LHECH-3	3	460	3	2.2	63
LHECH-5	5	530	3	3.0	92

Explosion-Proof Electric Chain Hoist — Specification Table

Modelo	Capacidade nominal (t)	Classificação ATEX	Altura do elevador (m)	Motor Power (kW)	Peso líquido (kg)
EXECH-0.5	0.5	Ex II 2G IIB T4	3	0.4	30
EXECH-1	1	Ex II 2G IIB T4	3	0.8	40
EXECH-2	2	Ex II 2G IIB T4	3	1.5	55
EXECH-3	3	Ex II 2G IIB T4	3	2.2	72
EXECH-5	5	Ex II 2G IIB T4	3	3.0	105

Motor Trolley Travel Speeds (Motor Travel Models)

Beam Flange Width (mm)	Travel Speed (m/min)	Travel Motor Power (kW)
74 – 150	20	0.2
100 – 200	20	0.4
150 – 300	20	0.4
200 – 400	20	0.75

Normas e Certificações

All Weihua electric chain hoists are designed, manufactured, and tested to meet leading international safety and performance standards.

Padrão/Certificação	Escopo
FEM 1.001	Federation Européenne de la Manutention — lifting equipment classification and duty cycle
EN 14492-2	European standard for powered hoists — safety requirements
ASME HST-4	American standard for electric chain hoists
GB/T 14406	China national standard for general-purpose electric chain hoists
Marcação CE	Certificação de conformidade europeia
ISO 4347	International standard for load chains
ATEX Directive 2014/34/EU	Explosion-proof equipment for hazardous atmospheres
IP55 Motor Protection	Dust-tight and water jet resistant motor enclosure (standard)

Buying Guide: How to Choose the Right Electric Chain Hoist

Choosing the correct electric chain hoist requires a structured approach. Consider the following factors before making a selection:

1. Determine a capacidade nominal necessária

Select an electric chain hoist with a rated capacity at least 25% above your maximum working load. For example, for a maximum load of 4,000 kg, choose a 5 t model. Never operate an electric hoist at or above its rated limit.

2. Assess Duty Class and Daily Lift Frequency

Electric chain hoists are classified by duty class (FEM / ISO M class) based on the number of lifts per day and the average load ratio. Selecting the correct duty class is essential for equipment longevity:

Classe de Dever	Lifts per Day	Load Spectrum	Aplicação típica
M3 (FEM 1Am)	Up to 20	Light	Maintenance, infrequent use
M4 (FEM 2m)	20 – 40	Médio	General workshop use
M5 (FEM 3m)	40 – 80	Medium-heavy	Active production lines
M6 (FEM 4m)	80 – 160	Heavy	Heavy continuous operation

3. Choose the Correct Lift Height

Standard lift heights are 3 m and 6 m. For tall buildings, high-bay warehouses, or deep shafts, custom lift heights of 9 m, 12 m, 18 m, and 24 m are available. Always confirm the available headroom before specifying lift height.

4. Evaluate the Operating Environment

Standard indoor use: Standard IP55 model is appropriate.
Wet, wash-down, or high-humidity environments: Specify IP65 or higher motor protection.
Corrosive, chemical, or marine environments: Specify stainless steel model.
Flammable gas or explosive dust atmospheres: Specify ATEX-rated explosion-proof model.
Limited headroom: Specify low-headroom or ultra-low-headroom model.

5. Decide on Travel Configuration

Single fixed point lifts only: Stationary hoist with top hook is sufficient.
Lateral movement along a single beam: Add a push trolley (manual) or motor trolley (powered).
Full area coverage on a rectangular floor plan: Integrate with a full overhead traveling crane system.

6. Consider Control Options

Standard pendant: Cost-effective, reliable, suitable for most applications.
Wireless remote: Improves operator visibility and safety around the load.
VFD control: Required for precision assembly, fragile loads, or automated systems.

7. Verify Certification and Supplier Capability

Always purchase electric chain hoists from a manufacturer with documented CE, ISO, and relevant regional certifications. Confirm that the supplier can provide after-sales service, spare parts availability, and technical support in your region.

About Weihua Electric Chain Hoists

Weihua is a professional electric chain hoist manufacturer and supplier based in China, with over 37 years of experience in lifting equipment design and manufacturing. All Weihua electric chain hoists are produced under a rigorous quality management system certified to ISO 9001, and all products are CE-marked in compliance with the European Machinery Directive.

Weihua provides a global after-sales service network, a one-year product warranty, and long-term spare parts availability for all hoist models. Our engineering team is available to support custom hoist specifications, crane system integration, and on-site installation guidance.

We also offer a comprehensive range of lifting equipment solutions, including manual chain hoists, overhead traveling cranes, gantry cranes, and jib cranes. Contact our engineering team today for a customized electric chain hoist solution tailored to your requirements.

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