When you need to lift heavy loads manually, chain pulley blocks ( also named chain hoists) are an essential tool. There are various types of manual chain hoists available to meet different environmental needs. You can choose chain pulley blocks that suit your requirements from the article below.
Manual Chain Block
Hand chain hoists are the most common type of manual chain pulley block. They are operated by pulling on a hand chain, which turns a series of gears to lift or lower a load. It is not recommended to use the chain hoist horizontally.
Key features include:
- Load Capacity: Typically ranges from 0.5 to 100 tons.
- Lift Height: Standard models usually offer lift heights of up to 3 meters, but custom options can extend much higher.
- Durability: Made from robust materials like steel, ensuring long-lasting performance.
- Ease of Use: Simple to operate, requiring minimal training.
Ratchet Lever Hoist
Ratchet lever hoists, also known as lever chain hoists, use a ratcheting mechanism to lift, lower, or pull loads. Unlike hand chain hoists, they do not require a vertical pulling action, making them suitable for horizontal applications.
Key features include:
- Load Capacity: Typically ranges from 0.25 to 9 tons.
- Lift Height: Usually offers lift heights of up to 1.5 meters, with longer chains available.
- Portability: Compact and lightweight, ideal for use in confined spaces.
- Versatility: Can be used for lifting, pulling, and positioning loads.
Corrosion-Resistant Chain Hoists
Designed for use in harsh environments, corrosion-resistant chain hoists are made from materials that resist rust and corrosion, such as stainless steel or specially coated metals. They are suitable for marine, food processing, and chemical industries.
Key features include:
- Load Capacity: Comparable to standard hand chain hoists, usually ranging from 0.5 to 20 tons.
- Lift Height: Standard and custom lift heights available.
- Durability: Enhanced resistance to corrosion and wear.
- Maintenance: Requires less frequent maintenance in corrosive environments.
Spark-Resistant Chain Hoists
For environments where flammable gases, dust, or vapors are present, spark-resistant chain hoists are essential. They are made from non-sparking materials like bronze or brass and are designed to prevent ignition.
Key features include:
- Load Capacity: Typically ranges from 0.5 to 20 tons.
- Lift Height: Customizable based on specific needs.
- Safety: Meets stringent safety standards for explosive environments.
- Application: Ideal for use in mines, oil refineries, and chemical plants.
Low Headroom Chain Hoists
Low headroom chain hoists are designed for use in spaces with limited vertical clearance. They have a more compact design that minimizes the distance between the hook and the hoist body.
Key features include:
- Load Capacity: Typically ranges from 0.5 to 20 tons.
- Lift Height: Customizable to fit specific height restrictions.
- Compact Design: Ideal for use in tight spaces.
- Efficiency: Allows for maximum lift height in constrained environments.
Choosing the right type of manual chain pulley block depends on your specific lifting requirements and the environment in which it will be used. Whether you need a standard hand chain hoist for general lifting, a ratchet lever hoist for horizontal applications, or a specialized hoist for corrosive or explosive environments, understanding the different types available will help you make an informed decision.