Hoisting chain
Hoisting Chain
Elephant leaf chain | Striving for perfection
SFR Technology Co. Ltd.
Leaf chains, also known as traction chains and hoisting chains, are generally used in the logistics industry, for lifting applications: forklifts, cranes, stackers, three-dimensional parking garages and other applications.
Types of Leaf chain
AL Series (American Light)
Plate configuration and thickness are the same as ANSI roller chain. Pin diameter is almost the same as ANSI roller chain. AL leaf chain (manufactured to the ANSI B29.9 standard) is constructed from American standard roller chain components. AL series chain is lightweight chain used for light load lifting applications and machine tools.
LL Series (European Light – Leaf Light)
LL leaf chain, manufactured according to ISO4347, DIN8152 and NFE26107 standards, is constructed from roller chain components to European standard. Like AL chain, LL chain is a lightweight chain used for light load lifting applications and machine tools.
BL Series (LH)
BL 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 roller chains. The pins have the same diameter as those of ANSI roller chains of the next larger pitch.
The structure of the Leaf chain
Leaf chain is composed of two parts, a chain plate and a pin shaft. The chain plates are connected by the pin shaft to withstand the tension of the chain plate. The outer chain plate and the pin shaft have an interference fit, and the inner chain plate and the pin shaft have a sliding fit. Compared with roller chains, leaf chains have a greater strength/weight ratio.
1. Outer chain plate
The outer chain plate of the leaf chain is made of special steel, which can resist sudden load and provide maximum resistance to fracture.
2. Bearing pin
The load-bearing pin of the Elephant and SFR brands leaf chain has strong bending resistance, excellent wear performance, and long life.
3. Inner chain plate
Through the precise control of the pin shaft and the aperture of the chain plate, the movement of the inner chain plate is improved, friction is minimized, and the economy and efficiency of chain operation are improved.
Applications of leaf chain
As a common transmission and lifting device, leaf chain is generally used in drives with large power and slow speed, and it is also suitable for corrosion-resistant, clean or demanding chemical fields and high and low temperature environments.
Leaf chains are widely used in lifting equipment industry, construction machinery industry, bulk material industry, etc. Specific applications include forklifts, stackers, parking garages, ascending platforms, etc.
Leaf chain manufacturing process
The basic technological process of leaf chain manufacturing includes raw material preparation, parts processing (chain plates, pins), rolling processing, parts heat treatment, surface treatment, parts oiling, assembly and other steps.
1. Selected high-quality raw materials
Elephant (SFR) leaf chain carefully selects high-performance raw materials, including high-quality carbon structural steel, alloy structural steel, spring steel, and strictly controls the raw materials.
2. Rigorous and comprehensive raw material testing
SFR Chain has advanced and complete testing laboratories at each of our factories, which conducts scientific and rigorous comprehensive testing of each raw material to ensure that they meet the quality and safety requirements.
The parts are processed by high-precision high-speed punches, high-speed cutting equipment, etc.
4. Heat treatment of parts
The fully automated mesh belt furnace line, rotary furnaces, converter and other equipment are used to process the leaf chain parts to improve the strength and toughness of the leaf chain.
5. Assembly
Elephant (SFR) leaf chain goes through automated assembly and testing production lines to accurately and efficiently assemble the finished leaf chain.
6. Finished product inspection
Before leaving the factory, Elephant (SFR) leaf chain needs to complete a series of inspections and tests, including chain performance tests such as tension, wear, and fatigue.
Elephant leaf chain has more than 30 years of experience in design, R&D, development and manufacturing. It gathers experienced designers and engineers, closely combines application scenarios, and provides customers with first-class leaf chain products and accurate and customized services through fine management and automatic production.
