Combination Transfer Chains C55A C55B C55D Rooftop Chains

Combination Transfer Chains, often called "rooftop" or "camelback" chains, are specialized conveyor chains designed for heavy-duty material handling, particularly in industries like lumber, packaging, and manufacturing. Typically used in troughs with two or more parallel strands, only the beveled tops of the links protrude above the guides, allowing transverse loading and unloading of items like lumber, boxes, barrels, or crates. Made from high-grade malleable iron, these chains feature non-heat-treated pins and sidebars, ensuring durability and flexibility. Combination transfer chains include C55A, C55B, C55D chains.

Combination Transfer Chain Dimensions

Key Features of Combination Transfer Chains

Combination transfer chains, often called "rooftop" or "camelback" chains, are specialized conveyor chains designed for heavy-duty material handling. Here are the key features:

1. Heavy Load Capacity: Combination transfer chains are engineered to transport heavily concentrated loads, such as lumber, boxes, barrels, and crates, making them ideal for industries requiring robust material handling solutions in demanding environments.
2. Rooftop Design: The chains feature a distinctive "rooftop" or "camelback" link shape, where only the bevel tops protrude above guides, allowing smooth transverse loading and unloading while minimizing material interference during transfer.
3. Multi-Strand Operation: Typically used in two or more parallel strands within troughs, these chains ensure stable and efficient movement of goods, enhancing conveyor system reliability and throughput in industrial applications.
4. Reversible Operation: Designed to run in either direction, combination transfer chains are suitable for installations requiring reverse operation, providing flexibility and adaptability to various conveyor system configurations and operational needs.
5. High-Grade Material Construction: Made from high-grade malleable iron, these chains offer durability and resistance to wear, ensuring long service life even under heavy loads and harsh operating conditions without heat-treated pins or sidebars.
6. Speed Suitability: Recommended for maximum speeds up to 100 feet per minute, depending on sprocket size and load, ensuring efficient operation while maintaining chain integrity and system performance in conveyor applications.

Combination Transfer Chain Applications

Combination transfer chains are specialized conveyor chains designed for heavy-duty material handling. Here are key applications:

1. Lumber Industry: Combination transfer chains transport heavy lumber loads in sawmills, supporting logs, boards, and timber across conveyors. Their rooftop design ensures stability, reduces material slippage, and handles high weights effectively.
2. Forestry Operations: These chains move forestry products like logs and wood chips on conveyor systems. Their durable, heat-treated construction supports heavy equipment, ensuring reliable performance in rugged outdoor environments.
3. Box and Crate Handling: Used in warehouses, combination transfer chains convey heavy boxes and crates in troughs. The protruding link tops minimize sliding, ensuring stable transport across parallel conveyor strands.
4. Barrel Transport: In industries like beverage or chemical manufacturing, these chains handle heavy barrels. Their robust design supports concentrated loads, operating in troughs to prevent tipping or misalignment during movement.
5. Manufacturing and Assembly Lines: Combination transfer chains support heavy workpiece carriers in automotive or machinery assembly. Their sturdy construction and sprocket compatibility ensure smooth, low-maintenance transport under high-load conditions.
6. Packaging Industry: These chains move packaged goods in high-volume packaging facilities. The rooftop design protects products, reduces conveyor wear, and supports heavy loads, enhancing operational efficiency and product safety.
7. Building Materials Transport: In construction material production, such as cement or brick manufacturing, these chains convey heavy materials. Their pre-stretched design minimizes elongation, ensuring consistent performance in demanding environments.

Combination Transfer Chain FAQ

Q1. What materials are used in Combination Transfer Chains?
A: Combination Transfer Chains are typically made from high-grade malleable iron for durability. Links are cast, while pins and sidebars are not heat-treated, ensuring flexibility and strength. Some variants, like those from Ever-Power, use Promal (Duramal) for enhanced performance. These materials ensure reliability under heavy loads.

Q2. How does the design of Combination Transfer Chains facilitate their function?
A: The design features bevel or peaked link tops that protrude above guides, allowing transverse loading and unloading. Operating in troughs with parallel strands, the "rooftop" or "camelback" structure supports heavy loads while minimizing wear. The chain’s bidirectional capability suits installations requiring reverse operation.

Q3. What is the difference between Combination Transfer Chains and H-Class Transfer Chains?
A: Combination Transfer Chains use malleable iron with bevel tops for transverse loading, while H-Class Transfer Chains (e.g., H78A, H130) often have peaked or flat roofs and higher tensile strengths (11,700–30,000 pounds). H-Class chains use T-head pins to reduce wear, unlike Combination chains.

Q4. How are Combination Transfer Chains installed and maintained?
A: Installation involves securing the chain in troughs with parallel strands, ensuring link tops protrude. Regular maintenance includes inspecting for wear, lubricating pins, and checking alignment. Proper tensioning prevents elongation, ensuring smooth operation in heavy-duty applications like lumber conveyors.

Q5. What are the load capacities of Combination Transfer Chains?
A: Load capacities vary by model (e.g., C55A, C55B). Designed for concentrated loads like lumber and crates, they handle heavy materials in troughs. Specific capacities depend on pitch and material, with tensile strengths up to 30,000 pounds for some variants.