Leaf chains are known for their durability and high tensile strength. They are primarily used in lift device applications such as forklifts, lift trucks, and lift masts. These hard working chains handle the lifting and balancing of heavy loads with the use of sheaves instead of sprockets for guidance. One of the primary differences with leaf chain compared to roller chain is that it only consists of a series of stacked plates and pins, providing superior lifting strength.
Leaf Chains and Strength
Leaf chains are famous with engineers for their strength in materials handling, such as with forklifts, lift trucks, lift masts, straddle carriers, and other major works of civil engineering. Their long service life, high fatigue strength and maximum wear resistance make them the ideal solution for long-term projects that need to be both reliable and incredibly strong. The compact design of leaf chains allows them to fit well within a variety of systems. The key parts of a leaf chain include:
Link Plates: Close control of the plate dimensions allows for high fatigue strength and long service life.
Pins: The pins pass through the plates and are subject to shearing forces, while the plates articulate on the pins through rotation over the sheave.
Leaf Chain AL Series or Leaf Chain BL Series
The American National Standards Institute (ANSI) determines consensus standards for a wide range of products and processes in the U.S. that are also adopted worldwide. This regulatory body provides the chain industry with specifics around size and strength that govern the manufacture of different types of chains, including leaf chains and roller chains. While these standards do not often change, AL Series was removed from ANSI Standard in 1975. The newer edition of the standard is BL Series, which replaced the AL Series. AL and BL Series are dimensionally different. BL Series has a higher tensile strength than AL Series and is more commonly used today. However, older machinery may still use the AL Series of leaf chain, which is still offered by HangZhou Star Machine Technology Co., Ltd. in a variety of different sizes.
When you need a leaf chain to keep your project in balance, contact the experienced professionals at HangZhou Star Machine Technology Co., Ltd. If you’re not sure exactly what type or size of chain that you need, we have decades of experience working with customers to provide the ideal chain or sprocket to keep you moving. We have a full line of Leaf AL Series Chains as well as Leaf BL Series Chains.
Weight Per Foot (lbs)
Leaf chains are built of interlaced plates held together by rivet pins. They are built with the same high degree of precision as our roller chains. HKK Leaf chains are used for applications that require strong flexible linkage for transmitting motion or lift. Specially selected steel and unique heat treatment assures high strength and durability. The first number or numbers in leaf chains identifies the chain pitch, the last 2 numbers identify the chain’s lacing. New applications should use BL series leaf chains.
QUICK REFERENCE XIHU (WEST LAKE) DIS.
Leaf Chain is the most simple of steel chains, consisting only of link plates and pins. This chain generally has greater tensile strength than roller chains and runs over sheaves rather than sprockets. They are suitable for hanging, balancing or motion transmitting applications. Leaf chains are often used as counterweight chains for machine tools, elevator and oven doors, fork lift truck masts, spinning frames and similar lifting or balancing applications.
Plates are connected by pins and hold the tension loaded on the chain.
Plate configuration and thickness are the same as ANSI G8 roller chain. Pin diameter is almost the same as ANSI G8 roller chain.
BL Series leaf chains consist of link plates which are thicker and larger in contour than the AL Series link plates of the same pitch. The link plates have the same thickness as the link plates of the next larger pitch size in ANSI G8 roller chains. The pins have the same diameter as those of ANSI G8 roller chains of the next larger pitch.
For Applications That Required Strong Flexible Linkage | Ideal for Lifting Applications | Specially Selected Steel | Unique Heat Treatment Process
WHY CHOOSE US
1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed CZPT Marketing Network
7. Efficient After-Sale Service System
The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.
We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CZPT range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.
Estimated freight per unit.
To be negotiated|
|Standard or Nonstandard:||Standard|
|Application:||Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car, Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car|
|Surface Treatment:||Baking Paint, Polishing|
How do leaf chains handle reverse motion or anti-reverse requirements?
Leaf chains are designed to handle reverse motion or anti-reverse requirements in lifting applications. They offer a unique design that prevents the chain from backtracking, ensuring the load remains securely in place even during sudden stops or reversals.
The anti-reverse feature in leaf chains is achieved through their construction. Leaf chains consist of link plates connected by pins and retainers, forming a continuous loop. The link plates have a shape that allows them to interlock with one another, creating a self-locking mechanism.
When the chain experiences a reverse motion or tries to move backward, the interlocking link plates engage and resist the motion, effectively preventing the load from descending unintentionally. This anti-reverse capability is crucial for ensuring the safety of lifting operations and protecting both the load being lifted and the equipment.
In addition to their anti-reverse characteristics, leaf chains also offer smooth and quiet operation during forward motion, making them suitable for various lifting applications where controlled and precise movement is essential.
It is important to note that proper maintenance and periodic inspections are necessary to ensure the anti-reverse feature of leaf chains remains effective. Regular lubrication and prompt replacement of worn or damaged components can help maintain the chain’s reliable performance in handling reverse motion requirements.
In summary, leaf chains possess inherent anti-reverse capabilities due to their interlocking link plate design, making them suitable for lifting applications that involve frequent changes in motion direction while maintaining load security and stability.
What are the temperature limits for leaf chains in extreme environments?
Leaf chains have temperature limits that depend on the materials they are made of and any additional coatings or treatments they undergo. In extreme environments, temperature considerations are essential to ensure the chains’ performance and longevity.
The temperature limits for leaf chains can vary, but here are some general guidelines:
- Standard Leaf Chains: Typically, standard leaf chains can operate in temperatures ranging from -20°C to 150°C (-4°F to 302°F). These chains are suitable for many industrial applications with moderate temperature variations.
- High-Temperature Chains: For more extreme environments, high-temperature leaf chains are available. These chains can withstand temperatures ranging from -40°C to 300°C (-40°F to 572°F) or even higher in some specialized cases.
- Low-Temperature Chains: In extremely cold environments, low-temperature leaf chains can be used. These chains are designed to perform well in temperatures as low as -60°C (-76°F) or lower.
It’s crucial to choose the right type of leaf chain that matches the specific temperature requirements of the application. Factors such as the surrounding conditions, operating duration, and load weight should also be considered when selecting leaf chains for extreme temperature environments.
Additionally, in some cases, lubrication and material choices can further extend the temperature range of leaf chains, ensuring reliable operation under challenging conditions.
Regular maintenance and inspections are necessary to monitor the condition of leaf chains and identify any signs of wear or damage that may occur in extreme temperature environments. This proactive approach helps ensure the safety and efficiency of lifting operations and extends the lifespan of the leaf chains.
editor by CX 2023-08-05