When it comes to ensuring the performance and durability of mechanical systems, understanding the roller chain size chart is essential. After all, selecting the correct chain size directly impacts the efficiency, safety, and lifespan of equipment.
This guide was created for those seeking clarity when identifying the right roller chain size, whether for industrial, agricultural, automotive, or construction applications.
Here, you’ll find everything you need: simple explanations, practical examples from PGN Bearings’ line, and direct answers to the most common questions on the topic.
If you want to avoid failures, maximize system performance, and choose the ideal chain without complications, this content is for you. Let’s dive into the world of roller chain size charts and make it simpler than ever!
What Is a Roller Chain Size Chart and Why Is It Important?
The roller chain size chart is a reference table that gathers all the essential measurements of roller chains. It provides information such as the pitch, roller diameter, inner plate width, and other technical details that help you select the ideal chain for each type of application.
Understanding the roller chain size chart is crucial to ensure compatibility between the chain and the transmission system. Choosing the wrong size can lead to premature wear, clearance issues, mechanical failures, and even greater equipment damage.
Moreover, correct sizing improves energy efficiency, reduces the risk of frequent maintenance, and extends the lifespan of machinery.
That’s why professionals in agriculture, construction, transportation, and manufacturing need to master this information.
How to Measure a Roller Chain Using the Roller Chain Size Chart
To find the ideal chain for your equipment, it’s essential to know how to accurately measure a roller chain using the roller chain size chart. Although it may seem complicated, the process becomes simple when you focus on a few key points.
The first step is to measure the pitch of the chain. This refers to the distance between the centers of two consecutive pins. Use a ruler or caliper to obtain this measurement precisely.
Next, measure the roller diameter. Position the measuring tool directly over the roller and record the value in millimeters or inches, depending on your standard.
Another critical aspect is the inner width between the inner plates. This measurement ensures that the chain fits properly onto the sprocket.
In some cases, it’s also important to check:
- Pin diameter;
- Plate thickness;
- Overall pin length.
Gathering these measurements and comparing them with the roller chain size chart helps you identify the corresponding ANSI or ISO chain number. This way, you ensure complete compatibility with your system and avoid premature failures.
Accurate measurements not only extend the chain’s lifespan but also optimize your equipment’s overall performance.
Key Dimensions
When analyzing a roller chain size chart, several dimensions are essential to ensure the correct selection of the chain. Each measurement plays a crucial role in the system’s compatibility and efficiency.
Here are the main ones:
- Pitch: The distance between the centers of two consecutive pins. This measurement defines the basic size of the chain and directly affects the type of sprocket used.
- Roller Diameter: This refers to the size of the cylinder that contacts the sprocket teeth. A correct diameter helps distribute the load better and minimizes wear.
- Inner Width: The distance between the two inner plates of the chain. This ensures a proper fit onto the sprocket.
- Pin Diameter: Measures the thickness of the pins connecting the chain links. An incorrect pin size can compromise the chain’s strength.
- Plate Thickness: Thicker plates provide greater mechanical strength, especially for heavy-duty applications.
- Plate Height: Plate height also impacts load capacity and the chain’s resistance to tension.
- Pin Length: Important for ensuring that the chain has the correct width for the intended system.
Each of these dimensions is presented in a standardized format within the roller chain size chart, making it easier to compare different models and select the ideal chain for your needs.
How to Understand Chain Sizes in Practical Applications
Knowing how to interpret a roller chain size chart in practice is key to selecting the correct chain for your application. Although the information may seem technical, the reading process is simpler than it appears.
First, find the chain number (such as #40, #50, or #60). Each number corresponds to a specific set of standard measurements, like pitch, roller diameter, and inner width.
Next, compare your system’s dimensions with the chart data:
- If your equipment’s pitch is 0.5 inches and the chain’s inner width is around 0.31 inches, for example, the corresponding number is likely #40.
Also, pay attention to special chain types. If your application demands higher strength, it might be better to choose a reinforced version like a “Heavy Duty” model.
Another important aspect is checking the chain material. If the working environment is humid or corrosive, you may need a stainless steel or nickel-plated option.
By cross-referencing all this information from the roller chain size chart with your application’s needs, you ensure an accurate choice and avoid future issues like breakage or premature wear.
Interpreting the chart correctly is a crucial step to boosting both safety and efficiency in your equipment.
Practical Examples of Roller Chain Size Chart
To better understand how to apply the roller chain size chart in practice, there’s nothing better than looking at real examples of roller chains.
A classic example is the #40 Roller Chain. According to the roller chain size chart and the ANSI standard, also adopted by the PGN Bearings line, it features:
- 0.5-inch pitch (12.7 mm);
- 0.313-inch roller diameter (7.95 mm);
- 0.312-inch inner width (7.85 mm).
This model is widely used in industrial power transmission systems because of its versatility and strength.
Another example is the #100H Heavy Duty Roller Chain from PGN Bearings. Following the same ANSI standard, it features a 1.25-inch (31.75 mm) pitch and reinforced plates, making it ideal for operations that require high load capacity and extra toughness.
For environments where corrosion resistance is critical, the #35SS Stainless Steel Roller Chain is also a standout. With a 0.375-inch (9.525 mm) pitch, it offers durability combined with rust protection.
What Size Is an #80 Roller Chain?
In the roller chain size chart, the #80 roller chain is one of the most popular choices for industrial applications requiring high strength and performance.
The main dimensions for the #80 chain are:
- Pitch: 1.00 inch (25.4 mm);
- Roller Diameter: 0.625 inch (15.88 mm);
- Inner Width: 0.625 inch (15.88 mm);
- Pin Diameter: 0.234 inch (5.94 mm).
These measurements follow the ANSI standard, which is also used in PGN Bearings product line, ensuring compatibility with most sprockets and standard transmission systems.
The #80 roller chain is ideal for equipment operating under heavy loads and needing extra toughness, such as agricultural machinery, industrial conveyors, and heavy-duty transport systems.
Referring to the roller chain size chart is essential to verify these dimensions and ensure that the selected chain perfectly matches the specific needs of the application.
What Size Is a #35 Roller Chain in the Roller Chain Size Chart?
The #35 chain is a compact option widely used in light to moderate-duty applications. In the roller chain size chart, its main dimensions are:
- Pitch: 0.375 inch (9.525 mm);
- Roller Diameter: 0.200 inch (5.08 mm);
- Inner Width: 0.188 inch (4.77 mm);
- Pin Diameter: 0.141 inch (3.58 mm).
These measurements follow the ANSI standard, which is also adopted by PGN Bearings products, ensuring compatibility in small industrial, agricultural, and automotive applications.
The #35 roller chain is commonly found in systems like mini conveyors, small agricultural equipment, electric bikes, and lightweight machinery, where strength and low weight are both important.
Tips for Choosing the Right Chain Using the Roller Chain Size Chart
The roller chain size chart is key to selecting the right chain, but using it correctly makes all the difference.
Here are some quick tips:
- Accurately measure the pitch and compare it to the chart.
- Consider the operating environment, choosing corrosion-resistant materials when needed.
- Evaluate the load and speed: for tougher conditions, opt for reinforced models.
- Check sprocket compatibility to ensure a perfect fit.
Using charts that follow standards like ANSI, as adopted by PGN Bearings, provides even more confidence when choosing.
If you’re looking for high-quality, reliable chains, check out the full Roller Chains line at PGN Bearings and find the perfect solution for your project!