Roller Chains
Roller chains, also referred to as bush roller chains, have a drive chain and chain links that are joined together to make up the roller chain. A roller chain consists of a pin, bushing, roller, pin link plate, and roller link plate. They are used in a wide range of applications, including the transmission of mechanical power with machinery such as industrial conveyors, printing presses, and vehicles such as cars, motorbikes, and bicycles. They are also used in the food industry, mining, automotive, warehouse and distribution, agriculture, and forestry.
How Do Roller Chains Work?
Roller chains have a typical chain link structure, a series of cylindrical rollers connected by links. They utilise a wheel component with teeth known as a sprocket to drive the chain when rotated, which in turn provides the power transmission.
Features and Benefits of Roller Chains
Roller chains offer a number of features and benefits that make them a popular choice for power transmission applications. These advantages include:
- Efficient Power Transmission: Roller chains provide a positive, non-slip drive, ensuring efficient power transmission from a motor to the driven equipment. This makes them highly effective as a drive chain in machinery.
- High Strength and Durability: The robust construction of an industrial roller chain ensures it can withstand high tensile loads and harsh operating conditions, providing a long service life and reducing the need for frequent replacement.
- Versatility: Roller chains are available in various configurations, including simplex, duplex, and triplex, allowing them to be tailored to the power requirements of different applications.
- Simplicity and Reliability: The straightforward design of a roller chain makes it easy to install and maintain. Its reliable performance and proven technology are why it remains a go-to choice for mechanical power transmission.
- Cost-Effectiveness: Compared to other power transmission methods like gear drives or belt drives, roller chains are often a more cost-effective solution, providing a good balance of performance and price.
Applications of Roller Chains
Roller chains are essential in a multitude of industrial settings, providing the reliable power transmission required for modern operations.
Discrete Manufacturing
In discrete manufacturing, industrial roller chains are vital for conveyor belt systems and automated assembly lines. They ensure the precise and synchronised movement of products and components, which is crucial for automation. Their robustness also enhances workplace safety by providing a reliable method for material handling.
Process Manufacturing
Process manufacturing relies on roller chains to drive mixers, pumps, and other equipment. Their durability makes them suitable for harsh environments, such as chemical plants or food processing facilities. The use of a sealed industrial chain ensures reliable operation and minimises contamination risks.
Energy & Utilities
In the energy and utilities sector, roller chains are used in power generation systems and heavy-duty machinery. They transmit power to large pumps and valves, and their reliability is critical for maintaining consistent and safe operations in demanding environments.
Facilities & Intralogistics
For facilities and intralogistics, duplex roller chains are commonly found in forklifts and lifting equipment. They provide the necessary strength and reliability for vertical lifting, ensuring the safe and efficient movement of goods in warehouses and distribution centres.
Agricultural Machinery
Agricultural machinery, including harvesters and balers, uses roller chains for power transmission. The strength and durability of these chains allow them to operate reliably in outdoor conditions and with high-impact loads.
Roller Chain Types
There are a few types of roller chains, mainly classified by their design and features:
- Number of Rows: Simplex roller chains (one row of rollers), duplex roller chains (two rows), and triplex roller chains (three rows) for varying power requirements.
- Material: Available in steel, stainless steel, and carbon steel for different strength and corrosion resistance needs.
- Standard: Manufactured to international standards like ANSI, BS, and ISO for consistent dimensions and performance.
- Features: Can be with or without rollers (bush roller chains). The bush chain is simpler and has a higher load capacity but a lower speed capability.
How to Choose a Roller Chain
As there are many variations of roller chains, selecting the right one is important to ensure compatibility with your sprockets and machinery, as well as optimal performance. Here are some factors to consider:
Load and Speed Requirements
The chain must be able to handle the load and speed of the application. High-speed, high-power applications, such as a motorcycle or a high-speed conveyor belt, will require a stronger chain with more rows, such as a duplex chain.
Environment
Consider the operating environment. For example, in corrosive or food-grade environments, a stainless steel roller chain is necessary. For standard industrial use, a carbon steel chain is often sufficient.
Pitch and Size
The pitch of the roller chain (the distance between the centres of the rollers) must match the sprocket size. Incorrect sizing can lead to premature wear and failure. Hence, you should measure the distance between the centre of three adjacent pins and divide by two to get the pitch of your existing chain.
Standard Compliance
Ensure the roller chain you choose complies with the correct industry standards (e.g., ANSI or BS) for guaranteed performance and compatibility.
Type of Drive
Ensure the type of roller chain meets the needs of your drive. For simple, low-speed applications, a single-row simplex chain may be sufficient, while high-torque, heavy-duty applications might require a multi-row or specialised chain.
Roller Chain Manufacturer, Supplier & Distributor in Australia
RS is your reliable source for high-quality roller chains. We stock an extensive range from industry leaders like SKF, Renold, and Wippermann. Our selection spans various types and specifications at competitive prices, ensuring you find the perfect industrial chain for your application.
We also carry other mechanical power transmission components, such as belt pulleys and electric linear actuators, for a comprehensive range of motion control solutions. Order your simplex roller chains, duplex roller chains, and other accessories online today.
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