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Roller Chain Size Chart With Complete Dimensions

Roller Chain Size Chart - Roller Chain Dimensions ChartRoller chains are the backbone of countless power transmission, agricultural, and industrial applications, offering unmatched reliability for moving parts. Since their invention in 1880, they’ve powered everything from conveyors and automotive systems to food and beverage machinery and farming equipment. Whether you're maintaining equipment or building something new, this roller chain size chart is your go-to guide for finding the perfect chain to meet your replacement or OEM needs.

How To Measure Roller Chain

Whether you're building something from scratch or making an update to an existing project, finding the right size for your roller chain is a critical first decision. In order to accurately measure roller chain, you'll need to know the overall width, diameter and width of the roller, plate thickness and height.

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Single Strand Roller Chain Size Chart

Looking for a reliable solution to keep your machinery running at peak performance? PEER Chain & Sprockets single strand roller chains are designed with durability and efficiency in mind, making them the perfect fit for a variety of industries:

  • Hot-dipped for superior lubrication: Each chain is 100% lubricated to maximize performance and extend wear life.
  • Heat-treated for wear resistance: Built to withstand tough conditions and maintain long-term reliability.
  • Pre-loaded for minimal elongation: Ensures your chain is ready to perform immediately, reducing the need for adjustments.
  • Versatile applications: Ideal for conveyors, the food industry, and more.
  • Trusted support: PEER Chain & Sprockets experts are here to help minimize downtime and keep your operations running smoothly.

When efficiency matters, PEER Chain & Sprockets single strand roller chains deliver unmatched quality and performance.

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Roller Chain Size Chart for How To Measure Single Strand Roller Chain

Part No. 25R 35R 40R 41R 50R 60R 80R 100R 120R 140R 160R 180R 200R 240R
Industry No. 25 35 40 41 50 60 80 100 120 140 160 180 200 240
Pitch (P) 0.250 0.375 0.500 0.500 0.625 0.750 1.000 1.250 1.500 1.750 2.000 2.250 2.500 3.000
Roller Width (W) 0.125 0.188 0.312 0.250 0.400 0.500 0.625 0.750 1.000 1.000 1.250 1.406 1.500 1.875
Roller Diameter (R) 0.130 0.200 0.312 0.306 0.375 0.469 0.625 0.750 0.875 1.000 1.125 1.406 1.562 1.875
Plate Height (H) 0.228 0.356 0.475 0.390 0.594 0.712 0.950 1.187 1.425 1.662 1.900 2.137 2.375 2.850
Plate Thickness (T) 0.030 0.050 0.060 0.050 0.080 0.094 0.125 0.156 0.187 0.219 0.250 0.281 0.312 0.375
Pin Diameter (D) 0.091 0.142 0.157 0.142 0.2000 0.235 0.313 0.376 0.4370 0.5000 0.563 0.687 0.781 0.937
Overall Width (F) 0.154 0.232 0.324 0.263 0.400 0.501 0.650 0.781 1.005 1.074 1.290 1.443 1.589 1.943
Overall Width (G) 0.185 0.277 0.406 0.334 0.488 0.601 0.803 0.950 1.174 1.267 1.459 1.659 1.825 2.179
Unit of Measure (Inches or Millimeters) in in in in in in in in in in in in in in
Average Tensile Strength (Lbs.) 1,036 2,469 4,188 2,866 6,834 9,259 17,636 25,353 34,392 46,297 57,761 84,216 109,128 154,323
Average Weight Per Foot (Lbs./Ft.) 0.087 0.215 0.417 0.276 0.679 0.974 1.714 2.654 3.790 4.959 6.317 8.514 10.684 16.396

Double Strand Roller Chain Size Chart

When your operations demand extra strength and durability, PEER Chain & Sprockets double strand roller chains deliver exceptional performance. Designed for heavier-duty applications, these chains are built to last while reducing maintenance costs:

  • Solid rollers for smoother operation: Enhanced rotation reduces impact loads on sprocket teeth, ensuring a longer lifespan.
  • Heat-treated for maximum strength: Each component is treated for wear resistance and reliability in tough conditions.
  • Pre-loaded for minimal elongation: Manufactured to limit initial stretching, providing immediate and consistent performance.
  • Perfect for heavy-duty applications: Ideal for industries requiring robust solutions for demanding tasks.
  • Low maintenance, high reliability: Engineered for fantastic wear life, keeping your operations running smoothly.

PEER Chain & Sprockets double strand roller chains combine strength and precision, ensuring your equipment meets its toughest challenges with ease.

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Roller Chain Size Chart for How To Measure Double Strand Roller Chain

PEER Part No. 35-2R 40-2R 50-2R 60-2R 80-2R 100-2R 120-2R 140-2R 160-2R 180-2R 200-2R 240-2R
Industry No. 35-2 40-2 50-2 60-2 80-2 100-2 120-2 140-2 160-2 180-2 200-2 240-2
Pitch (P) 0.375 0.500 0.625 0.750 1.000 1.250 1.500 1.750 2.000 2.250 2.500 3.000
Roller Width (W) 0.188 0.312 0.375 0.500 0.625 0.750 1.000 1.000 1.250 1.406 1.500 1.875
Roller Diameter (R) 0.200 0.312 0.400 0.469 0.625 0.750 0.875 1.000 1.125 1.406 1.562 1.875
Plate Height (H) 0.356 0.475 0.594 0.712 0.950 1.187 1.425 1.662 1.900 2.137 2.375 2.850
Plate Thickness (T) 0.050 0.060 0.080 0.094 0.125 0.156 0.187 0.219 0.250 0.281 0.312 0.375
Pin Diam (D) 0.142 0.157 0.200 0.235 0.312 0.376 0.437 0.500 0.563 0.687 0.781 0.937
Overall Width (F) 0.441 0.608 0.755 0.949 1.224 1.502 1.895 2.030 2.457 2.739 2.998 3.673
Overall Width (G) 0.469 0.690 0.850 1.055 1.386 1.655 2.060 2.243 2.567 2.955 3.234 3.906
Unit of Measure (Inches or Millimeters) in in in in in in in in in in in in
Transverse pitch (K) 0.399 0.566 0.713 0.897 1.153 1.408 1.789 1.924 2.305 2.592 2.817 3.458
Average Tensile Strength (Lbs.) 4,938 8,377 13,668 18,518 35,273 50,706 68,784 92,594 115,522 168,433 218,257 308,647
Average Weight Per Foot (Lbs./Ft.) 0.423 0.820 1.344 1.929 3.393 5.282 7.526 9.851 12.526 16.893 21.234 32.523

Triple Strand Roller Chain Size Chart

For your toughest jobs, PEER Chain & Sprockets triple strand roller chains deliver unmatched strength and reliability. Engineered for heavy-duty applications, these chains provide optimal performance and exceptional wear life:

  • Enhanced durability: Solid rollers improve rotation and reduce impact loads on sprocket teeth, extending chain and sprocket life.
  • Heat-treated for strength: Built to withstand significant pressure in demanding environments.
  • Pre-loaded for precision: Designed to minimize initial elongation, ensuring reliable performance from the start.
  • Versatile applications: Perfect for industries such as agriculture, sewage, and machinery.
  • Efficient and effective: Reduces downtime while handling heavy loads with ease.

PEER Chain & Sprockets triple strand roller chains are the robust solution you need to keep your operations running smoothly, no matter the challenge.

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Triple Strand Roller Chain Size Chart

PEER Part No. 35-3R 40-3R 50-3R 60-3R 80-3R 100-3R 120-3R 140-3R 160-3R 180-3R 200-3R 240-3R
Industry No. 35-3 40-3 50-3 60-3 80-3 100-3 120-3 140-3 160-3 180-3 200-3 240-3
Pitch (P) 0.375 0.500 0.625 0.750 1.000 1.250 1.500 1.750 2.000 2.250 2.500 3.000
Roller Width (W) 0.188 0.312 0.375 0.500 0.625 0.750 1.000 1.000 1.250 1.406 1.500 1.875
Roller Diameter (R) 0.200 0.312 0.400 0.469 0.625 0.750 0.875 1.000 1.125 1.406 1.562 1.875
Plate Height (H) 0.356 0.475 0.594 0.712 0.950 1.187 1.425 1.662 1.900 2.137 2.375 2.850
Plate Thickness (T) 0.050 0.060 0.080 0.094 0.125 0.156 0.187 0.219 0.250 0.281 0.312 0.375
Pin Diam (D) 0.142 0.157 0.200 0.235 0.313 0.376 0.437 0.500 0.563 0.687 0.781 0.937
Overall Width (F) 0.633 0.890 1.113 1.400 1.799 2.224 2.773 2.997 3.613 4.035 4.406 5.402
Overall Width (G) 0.677 0.975 1.207 1.506 1.965 2.338 2.974 3.194 3.691 4.251 4.642 5.638
Unit of Measure (Inches or Millimeters) in in in in in in in in in in in in
Transverse pitch (K) 0.399 0.566 0.713 0.897 1.153 1.408 1.789 1.924 2.305 2.592 2.817 3.458
Average Tensile Strength (Lbs.) 7,407 12,566 20,502 27,778 52,910 76,059 103,176 138,891 173,283 252,649 327,386 462,970
Average Weight Per Foot (Lbs./Ft.) 0.631 1.223 2.002 2.876 5.067 7.896 11.242 14.736 18.741 25.266 31.784 48.651

Quad Strand Roller Chain Size Chart

For the most demanding industries, PEER Chain & Sprockets quad strand roller chains are built to handle the challenge with precision and strength. Designed for heavy-duty applications, these chains deliver maximum performance and durability to keep your operations running smoothly:

  • Solid rollers for reduced impact: Enhance rotation and minimize sprocket tooth wear for longer equipment life.
  • Heat-treated components: Built for exceptional strength and wear resistance in demanding environments.
  • Pre-loaded for efficiency: Reduces initial elongation, ensuring consistent performance right from the start.
  • 100% lubricated for reliability: Provides smooth operation and reduces maintenance needs.
  • Ideal for heavy-duty applications: Perfect for industries requiring robust solutions to minimize downtime.

When it’s time to tackle serious work, PEER Chain & Sprockets quad strand roller chains deliver the power and reliability you need. Reach out to our experts for help with sizing and selection to ensure the perfect fit.

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Measure Quad Strand Roller Chain Size Chart

PEER Part No. 50-4R 60-4R 80-4R 100-4R 120-4R 140-4R 160-4R 180-4R 200-4R 240-4R
Industry No. 50-4 60-4 80-4 100-4 120-4 140-4 160-4 180-4 200-4 240-4
Pitch (P) 0.625 0.750 1.000 1.250 1.500 1.750 2.000 2.250 2.500 3.000
Roller Width (W) 0.375 0.500 0.625 0.750 1.000 1.000 1.250 1.406 1.500 1.875
Roller Diameter (R) 0.400 0.469 0.625 0.750 0.875 1.000 1.125 1.406 1.562 1.875
Plate Height (H) 0.594 0.712 0.950 1.187 1.425 1.662 1.900 2.137 2.375 2.850
Plate Thickness (T) 0.080 0.094 0.125 0.156 0.187 0.219 0.250 0.281 0.312 0.375
Pin Diam (D) 0.200 0.235 0.313 0.376 0.437 0.500 0.563 0.687 0.781 0.937
Overall Width (F) 1.483 1.848 2.392 2.909 3.682 3.959 4.746 5.331 5.814 7.130
Overall Width (G) 1.550 1.955 2.526 3.063 3.832 4.152 4.920 5.547 6.050 7.366
Unit of Measure (Inches or Millimeters) in in in in in in in in in in
Transverse pitch (K) 0.713 0.897 1.153 1.408 1.789 1.924 2.305 2.592 2.817 3.458
Average Tensile Strength (Lbs.) 28,439 37,919 70,547 117,506 155,425 213,407 267,200 336,866 436,515 617,294
Average Weight Per Foot (Lbs./Ft.) 2.674 3.830 6.760 10.516 14.971 19.648 25.004 33.639 42.200 64.643

Heavy Series Single Strand Roller Chain Size Chart

When power and durability are a must in tight spaces, PEER Chain & Sprockets Heavy Series Single Strand Chains are the ideal solution. Designed to handle demanding tasks, these chains offer unmatched reliability and performance:

  • Thick side plates for added strength: Built to handle high power transmission with ease.
  • Hot-dipped lubrication: Enhances wear life and ensures each component operates smoothly.
  • Pre-loaded for minimal elongation: Reduces the need for adjustments during initial use.
  • Solid rollers for efficiency: Improves rotation on the bushing and minimizes impact loads on sprocket teeth.
  • Heat-treated for maximum durability: Provides exceptional strength and wear resistance for long-term performance.

For heavy-duty applications, PEER Chain & Sprockets Heavy Series Single Strand Chains deliver power you can count on. Contact our Engineering Experts to find the perfect solution for your needs.

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Roller Chain Size Chart for Single Strand Roller Chain

PEER Part No. 25HR 50HR 60HR 80HR 100HR 120HR 140HR 160HR 180HR 200HR
Industry No. 25H 50H 60H 80H 100H 120H 140H 160H 180H 200H
Pitch (P) 0.250 0.625 0.750 1.000 1.250 1.500 1.750 2.000 2.250 2.500
Roller Width (W) 0.125 0.375 0.500 0.625 0.750 1.000 1.000 1.250 1.406 1.500
Roller Diameter (R) 0.130 0.400 0.469 0.625 0.750 0.875 1.000 1.125 1.406 1.562
Plate Height (H) 0.229 0.594 0.712 0.950 1.187 1.425 1.662 1.900 2.137 2.375
Plate Thickness (T) 0.040 0.094 0.125 0.156 0.187 0.219 0.250 0.281 0.312 0.375
Pin Diam (D) 0.091 0.2000 0.235 0.313 0.376 0.437 0.5000 0.563 0.6870 0.781
Overall Width (F) 0.174 0.435 0.567 0.715 0.860 1.072 1.144 1.339 1.521 1.715
Overall Width (G) 0.603 0.474 0.618 0.793 0.998 1.265 1.345 1.546 1.738 1.934
Unit of Measure (Inches or Millimeters) in in in in in in in in in in
Average Tensile Strength (Lbs.) 1,160 8,157 11,905 21,495 30,424 41,447 54,895 68,784 97,444 113,759
Average Weight Per Foot (Lbs./Ft.) 0.108 0.766 1.163 1.996 3.017 4.207 5.477 7.109 9.206 12.835

Heavy Series Double Strand Roller Chain Size Chart

When durability and performance are non-negotiable, PEER Chain & Sprockets Standard Heavy Double-Strand Chain is the reliable choice. Built to handle tough applications, these chains are designed for frequent use with minimal wear:

  • Optional Quest technology: Solid bushings provide enhanced durability and long-lasting performance.
  • 100% lubricated components: Ensures smooth operation and reduces wear during frequent use.
  • Heat-treated for strength: Delivers maximum durability, strength, and wear resistance for demanding tasks.
  • Pre-loaded for efficiency: Minimizes initial elongation, so your chain is ready to work right away.
  • Versatile for various applications: Built to meet the needs of section-dependent operations.

Count on PEER Chain & Sprockets heavy-duty double-strand chains to keep your equipment running smoothly. Contact our roller chain specialists today for tailored solutions.

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Double Strand Roller Chain Size Chart for How To Measure Double Strand Roller Chain

PEER Part No. 60H-2R 80H-2R 100H-2R 120H-2R 140H-2R 160H-2R 180H-2R 200H-2R
Industry No. 60H-2 80H-2 100H-2 120H-2 140H-2 160H-2 180H-2 200H-2
Pitch (P) 0.750 1.000 1.250 1.500 1.750 2.000 2.250 2.500
Roller Width (W) 0.500 0.625 0.750 1.000 1.000 1.250 1.406 1.500
Roller Diameter (R) 0.469 0.625 0.750 0.875 1.000 1.125 1.406 1.562
Plate Height (H) 0.712 0.950 1.187 1.425 1.662 1.900 2.137 2.375
Plate Thickness (T) 0.125 0.156 0.187 0.219 0.250 0.281 0.312 0.375
Pin Diam (D) 0.235 0.313 0.376 0.437 0.500 0.563 0.687 0.781
Overall Width (F) 1.085 1.368 1.637 2.048 2.172 2.557 2.881 3.257
Overall Width (G) 1.132 1.427 1.763 2.233 2.369 2.764 3.346 3.475
Unit of Measure (Inches or Millimeters) in in in in in in in in
Transverse pitch (K) 1.028 1.283 1.539 1.924 2.055 2.437 2.723 3.083
Average Tensile Strength (Lbs.) 23,810 42,990 60,848 82,894 109,790 137,568 194,889 227,517
Average Weight Per Foot (Lbs./Ft.) 2.305 3.971 5.880 8.400 10.886 14.172 18.210 25.468

Functions of Roller Chains

In general, roller chains have four key functions:

  • To move materials or objects from one location to another
  • To transmit power
  • To ensure that an action occurs consistently after the previous action over a period of time; i.e. synchronization
  • To shift the direction of motion from linear to rotary

 
Roller chains have significant advantages over belt drives for these functions, as they have very little slippage or stretching across the chains even with a heavy load and are incredibly efficient and long-wearing. Our roller chains offer exceptional strength and durability, thanks to our effective heat treatments and 100% lubrication techniques. Roller chains are exceptional for use in a high-stress environment as they will hold up under even the most difficult conditions such as high and low temperature, or start-stop action usage. Regardless of industry, roller chains are necessary to keep operations running smoothly in various light and heavy-duty applications. By investing in quality roller chains for your day-to-day machinery, you are more likely to enjoy consistent and steady business. These roller chains also have a virtually unlimited shelf life as long as they are stored and maintained in the proper environment.

Sizes of Roller Chains

As you can see above in the roller chain size charts, there is a wide range of sizes that are available in this versatile chain. Single and multiple-strand roller chains are available, with different weight and tensile strength ratings based on the manufacturing requirements for their particular use. Since chains are used as a drive and as part of a conveyor system, the range of sizes can be quite significant. Smaller pitch chains are often found in light to moderate load applications while larger pitch chains are used in heavier load applications.

Roller chain sizes are standardized according to ANSI/ASME or ISO British standards, which are meant to provide interchangeability of design and dimensions for chains, sprockets, and attachments. Fortunately, you will find a wide range of options available at PEERChain.com. Before purchasing your very own roller chain, it is crucial to determine which size component will best suit your operational needs. If you aren’t sure which roller chain will work best for your applications, simply connect with one of our friendly experts.

Roller chain specification includes key values for:

  • Size
  • Pitch
  • Roller Width and Diameter
  • Average Ultimate Tensile Strength
  • Sizes for ANSI/ASME standard roller chains range from 25 to 240.

Guide To Roller Chain Chart Size: What You Need to Know

Roller chains are essential components in countless industrial and mechanical applications, offering reliable performance for a variety of functions. They excel in moving materials, transmitting power, synchronizing sequential actions, and converting motion from linear to rotary. Unlike belt drives, roller chains provide minimal slippage, superior efficiency, and long-lasting durability, even under heavy loads or in high-stress environments. By understanding these product benefits, you can confidently select a roller chain built to handle your operational demands:

Functions of Roller Chains

  • Material Movement: Efficiently transport objects or materials.
  • Power Transmission: Reliably transfer power to moving parts.
  • Synchronization: Maintain consistent action in timed sequences.
  • Motion Conversion: Seamlessly shift motion from linear to rotary.

Roller Chain Sizes and Applications

  • Smaller Pitch Chains: Ideal for light to moderate loads.
  • Larger Pitch Chains: Built for heavy-duty applications.
  • Single and Multi-Strand Options: Versatility to meet specific operational needs.

Strength That Matters

  • Tensile Strength: Measures the one-time load a chain can withstand before breaking.
  • Fatigue Strength: Indicates a chain's ability to endure continuous use over time without failing.

Whether you're looking for heavy, immediate loads or long-term durability, we’ve got you covered. Contact our experts today for personalized guidance and high-quality solutions tailored to your application. If you are attempting to match a chain or sprocket and don't see what you need, just let us know! We will find it for you.

About Chain & Sprockets

How To Measure Chain Size

Roller chains can be measured according to standards of measurement for the type of chain you are working with. Precision roller chains are used in many different applications and are manufactured to strict industry standards, such as ANSI/ASME and ISO British Standards. Because roller chain must interact directly with sprockets and other moving machine parts, it is necessary to measure its dimensions precisely. Therefore, it is important to measure all components of roller chain in order to identify the correct chain.

Questions? Contact us on how to measure chain size!

How To Measure Chain Size and Chain Pitch

Getting the right chain for your project the first time means less time that your machinery is down and more money in your pocket! Having to go back and forth trying different sizes of chain only to find that they don't work exactly as expected can bring production at your business or farming operation to a screeching halt. Since downtime is so expensive both in terms of machine time and labor, it's vital that you find exactly the right size for your chain before you place an order. Once your order has been placed, you need the confidence of knowing that the professionals at PEER Chain will be quickly and efficiently processing your order and shipping the correct roller chain and parts to your door. Here are tips that will help you understand how to measure chain pitch and how to measure chain link size.

PEER Chain part numbers or item descriptions are typically indicated on the chain plates and product packaging. Using the PEER part numbers, you can easily find the chain size and specifications on PEERchain.com. If you do not have access to PEER part number, then you may need to measure the chain.

As a first step, we should define the components of roller chain.

  • Pin Link Plate: This is an outer plate on the pin link of roller chain. It can be straight or figure-8 shaped.
  • Roller Link Plate: This is an inner plate on the roller link of roller chain. It can be straight or figure-8 shaped.
  • Roller: This rotates on top of the bushing on the roller link.
  • Pin: This is press fit into the pin link plate and bisects the bushings in the roller link.
  • Bushing: This is press fit into two roller link plates and is bisected by the pin in the pin link.

Oftentimes the plates are stamped with chain size (i.e. 40, 08B, C2040, etc.). These can come in the form of numbers or letters stamped on the outside of the side plate and can help you to look up the full dimensions of your chain via manufacturer provided information. Because the roller chain must interact directly with sprockets and other moving machine parts, it is necessary to measure its dimensions precisely. Therefore, it is important to measure all components of the roller chain in order to identify the correct chain.

How to Measure Chain Link Size

Measuring chain link size doesn't have to be difficult! All you need is an understanding of a few simple concepts, and you will quickly be able to determine the size of the chain that you need for your project. Roller chains come in a variety of sizes and thicknesses. The number of strands on your roller chain may also vary, making it important to understand exactly how to measure your chain link size. You'll be looking for the:

  • Overall width of the chain
  • The diameter and width of the roller
  • The thickness of the plate
  • Overall height of the chain

Once you have all of these measurements in hand, you can match to the handy size chart online or contact one of the professionals at PEER Chain to place your order.

How to Measure Chain Pitch

Measuring the pitch of a roller chain can be a bit tricky, but as long as you are careful about the various parts and how you measure you will quickly be able to get the sizes that you need. Measuring the pitch begins by identifying the pin of your chain. Pitch is the measurement from the center of one pin to the center of the next pin in line. The pitch helps determine the overall rated weight and strength of the roller chain.

When your business depends on getting access to knowledgeable professionals that can help get your projects moving again quickly, it's good to know that PEER Chain is here to help. Whether you are trying to figure out how to measure chain pitch or simply need to reorder a known part, you can trust that your request will be handled promptly and you will receive the correct items in good condition. For many decades, PEER Chain has been the choice of farmers, manufacturers and more because we have an exceptional focus on our customers. Contact the experts at PEER Chain today by calling 800-523-4567 or via email to [email protected] if you have any questions about how to measure chain link size and you'll be certain to receive a rapid response.

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Chain Number - Understand the Roller Chain Numbering System

If you are a bit unsure about the various chain number options when you’re trying to replace a part for your machines, you’re certainly not alone. The American National Standards Institute (ANSI) has developed a range of standardized requirements for excellence in chains, with the numeric indicator helping define the information you need to know about a chain quickly including the pitch, tensile strength, plate height and thickness, width and more. Each of these measurements helps ensure that you are getting exactly what you need for safe and long-term work from your machinery. Here’s what you need to know to understand the ANSI roller chain numeric system.

Specifics of ANSI Numbering

Finding a chain with number on it might be a bit challenging, especially if you're dealing with aging machinery. Fortunately, you can easily equate the exact size of a chain to an ANSI numeric indicator with only a few measurements. For instance, a 40R roller chain has a pitch (P) of 0.250 in., roller width (W) of 0.125 in. and a pin diameter (D) of 0.091 in.. With these measurements in hand, you can safely identify the correct part for your project. The full range of specifications that make up ANSI standards are:

  • Pitch (P)
  • Roller Width (W)
  • Roller Diameter (R)
  • Plate Height (H)
  • Plate Thickness (T)
  • Pin Diameter (D)
  • Overall Width Over Regular Pin (F + F)
  • Overall Width Over Connecting Pin (F + G)

Along with these size-related measurements, roller chains also are measured by their Average Tensile Strength (measured in Lbs.) and their Average Weight Per Foot (measured in Lbs./Ft.). These vital measurements can help ensure you are utilizing the correct type and weight of chain for your particular application.

Range of the ANSI Standard Roller Chain Number System

If you're measuring your chain and find that your dimensions don't exactly match one of our ANSI standard roller chain sizes, there's always a possibility that you have a non-standard roller chain or an ISO British (Metric) Standard Chain.

While roller chains are complex parts of a machine, the friendly service professionals at PEER Chain are always ready and willing to provide assistance and insight to keep your project moving. You can learn more about the various chains with a number on them in our online resources section or by calling us at 800-523-4567 or sending an email to [email protected]. We provide a wide range of products that are used in industries from agriculture to lumber and sewer treatment facilities and take pride in being able to quickly provide the right chains and attachments to keep you moving

About Chain & Sprockets

Popular Terminology for Roller Chains

Expert Industrial Roller Chain Infographic of Key Components

Roller Chain Infographic of Additional Terms

Roller Chain Infographic of Additional Terms

There are many different (and sometimes confusing!) terms associated with chains, but never fear — your PEER Chain team is here to help! We believe that educated consumers are able to make the best decisions about their needs, so let’s demystify these terms and share everything that you need to know about chain terminology. You may want to bookmark this helpful guide as a quick reference for the future.

Overview of Chain Terminology

There are several key components that make up a standard roller chain:

  • Roller Link: Inner Link composed of 2 Roller Link Plates, 2 Bushings, and 2 Rollers
  • Pin Link: Outer Link composed of 2 Pin Link Plates and 2 Pins
  • Spring Clip Style Connecting Link: Outer Link composed of 1 Press Fit Plate with 2 Pins, 1 Detachable Slip Fit Plate and 1 Spring Clip
  • Cottered Style Connecting Link: Outer Link composed of 1 Press Fit Plate with 2 Cotter Pins, 1 Detachable Slip Fit Plate and 2 Cotter Keys
  • Offset Link: Link composed of 2 Offset Plates, 1 Cotter Pin with 1 Cotter Key, 1 Bushing, and 1 Roller (Note: #25 and 35 chains are rollerless chains)

Together, these components make up a completed roller chain. Roller chains can be either single-strand or multiple-strand and come in a range of sizes, with different tensile strength and working loads. Together, the tensile strength and chain load ratings help buyers determine which chain is right for their unique needs.

Additional terms that are used to describe chains include:

  • Chain Pitch describes the distance between the pin center points on a single Pin Link. The number to the left of the right-hand digit in a standard roller chain size denotes the number of â…› inches in the pitch. (Ex: 40 Riv = 4/8 = ½” Pitch)
  • Heavy Series Chain differs from standard series in the thickness of the plates.
  • Chain Preloading refers to preloading during the manufacturing process. This also is sometimes referred to as Pre-Stretching.
  • Minimum Ultimate Tensile Strength is the minimum force at which an unused, undamaged chain could break when subjected to a single tensile loading test.
  • Attachments are adaptations to standard roller chain components to modify the chain for use in multitudes of applications. Attachments are commonly seen on pin links, roller links, and connecting links.
  • Chain elongation is defined as the difference in length of a chain due to wear. During normal operation, the pins articulate within the bushings. The outside diameter of the pin decreases as the inside diameter of the bushing increases from wear.

At PEER Chain, we take pride in our exceptional customer service that starts long before a sale. We feel it’s important to help you learn more about chain ratings and the different types of chains so you can quickly and easily work through your next project. Contact our team of proactive service professionals today by calling 800-523-4567 or via email to [email protected]. You can also find out more about our products and services online and see the industries that we serve.

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The Fundamental Components of Roller Chain

Explore the Essential Parts of a Chain in Action

At PEER Chain and Sprockets, we’re dedicated to helping you maximize efficiency and durability with solutions designed to meet your unique industry needs. Learn how to uncover the key elements that make chains work seamlessly together—whether you’re optimizing industrial machinery or fine-tuning agricultural equipment. Let’s break down the mechanics so you can build stronger, longer-lasting systems with confidence.

Roller Chains

Delivering unmatched efficiency and reliability in countless applications, roller chains are the backbone of power transmission. Engineered to seamlessly transfer power between mechanisms, these chains are built to last, ensuring durability and peak performance where it matters most.

Extended Pitch Chains

As the go-to solution for conveyor systems, extended pitch chains effortlessly keep materials and goods on the move. Built for efficiency, they shine in industrial settings, ensuring smooth, reliable transport from one point to the next.

Engineering Class Chains

Designed with precision for specialized applications, engineering class chains are built to tackle the unique challenges of diverse industries. With tailored features and advanced characteristics, these chains deliver exceptional performance and reliability in even the most demanding environments.

 

Roller Chain Parts and Components

Roller chains are built on a foundation of key components, each playing a critical role in their strength and functionality. At PEER Chain and Sprockets, we simplify your supply needs by offering a comprehensive range of roller chain elements, including rollers, pins, bushings, and link plates—all designed to ensure optimal performance. Whether you’re looking for in-stock components or custom solutions with quick lead times, our expertise and product availability make it easy to keep your operations running smoothly and efficiently.

Link Plates

Creating a strong, seamless loop by connecting individual links together, link plates are the backbone of every roller chain. These flat metal plates are designed for durability, playing a vital role in ensuring the chain’s strength and reliability. When it comes to performance, the integrity of link plates is key to keeping your system running smoothly under the toughest conditions.

Rollers

Working tirelessly between the link plates to keep things moving smoothly, rollers are the heart of a roller chain’s functionality. These cylindrical components reduce friction and enable seamless rotation, boosting efficiency and extending the chain's lifespan—even in the most demanding applications.

Bushings

Acting as durable metal sleeves that cradle the pins, bushings are the essential part of roller chains. By creating a smooth, low-friction surface for pin rotation, bushings play a critical role in enhancing the chain’s strength, durability, and long-term performance.

Pins

Pins are the essential connectors that hold a roller chain together, fitting seamlessly through the bushings and link plates to create a secure, power-transmitting structure. These small but mighty components are key to ensuring the chain’s strength, reliability, and smooth operation in any application.

Search for Roller Chain

Use our Chain Finder tool to quickly search roller chain by part number, industry number, category, by industry, pitch or roller width.

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History and Functions of Chain

Welcome to the history and functions of roller chain. In this series, Chuck Briere, PEER Chain's Vice President of Strategic Alliances, will unravel importance of chains, starting with a brief lesson on their history and functions. Here we explore how chains have played a pivotal role throughout the centuries and continue to shape our everyday lives.

A Historical Perspective on Roller Chain

It may surprise many to learn that roller chain has a rich history that dates back centuries and remain relevant even in today's technological age. Chains are not just simple mechanisms; they are vital components that underpin various aspects of our lives. Consider this: the power we generate for electricity and the water we drink both rely on the use of chains. Whether it's the manufacturing of consumer goods or the handling of industrial equipment, chains play a crucial role. The story of chains begins in 225 BC with a Greek engineer named Philo the Byzantium Mechanicus, who laid the conceptual groundwork for mechanical engineering as we know it today. Fast forward to the 1500s, where the visionary inventor Leonardo da Vinci conceptualized designs featuring chains. Finally, during the Industrial Revolution in the 1800s, chains fueled the textile and weaving mills, revolutionizing power transmission from shaft to shaft. This transition from flat belt drives to cog chain systems marked a significant milestone, highlighting the unique features and benefits that chains provide.

Unveiling the Functions of Roller Chain

Now that we have glimpsed into the historical significance of chains, let's delve into their fundamental functions. There are three primary functions that chains serve:

Power Transmission

Chains excel in transferring power from one shaft to another, enabling the rotation of various components in factories. This function is crucial for driving the machinery that keeps our industries running smoothly.

Conveyance

Chains are essential for moving items from point A to point B in industrial settings. From assembly lines to logistics operations, chains serve as reliable conveyors, ensuring efficient and seamless movement of goods.

Tension Linkage

When it comes to lifting heavy objects or providing support in machinery, chains play a vital role in tension linkage. For instance, in forklifts, chains enable the lifting mechanism to hoist loads effortlessly. Similarly, in many in-feed applications, chains facilitate the smooth and precise lifting of objects, offering stability and control.

Roller Chain is all Around us

From their ancient origins to their modern-day applications, chains have been instrumental in shaping the world around us. As Chuck Briere, PEER Chain's Vice President of Strategic Alliances, introduces us to the truth and maintenance of chains in this series, we will gain a deeper understanding of these remarkable mechanisms. Next time you flip a switch, drink a glass of water, or witness the smooth operation of manufacturing machinery, take a moment to appreciate the often overlooked yet indispensable role that chains play in our lives. Continue explore the world of chain in maintenance and upkeep of chains, where we will discuss ensuring roller chains continued reliability and efficiency in an ever-evolving world.

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Maintenance, Measuring Wear
Chain Wear Gauge

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Roller Chain Maintenance

Maintaining the performance and longevity of roller chains is crucial for their efficient operation. One essential aspect of roller chain maintenance is monitoring and measuring wear and tear. This allows for timely replacements and prevents unexpected chain failures. To measure wear, start by inspecting the chain's pitch. The pitch refers to the distance between two adjacent roller pins. Use a caliper or a pitch gauge to measure this distance accurately. If the pitch exceeds the manufacturer's recommended tolerance, it indicates significant wear, and the chain should be replaced. Next, examine the roller diameter. Rollers are the components that engage with the sprocket teeth. Using a micrometer, measure the roller diameter at various points along the chain. If the diameter falls below the specified minimum, it signifies excessive wear, and the chain should be replaced promptly. Additionally, check for elongation in the chain. Over time, chains may stretch due to wear and load conditions. To measure elongation, select a specific number of links (e.g., ten) and measure the distance between them. If the distance exceeds the recommended limit, the chain has elongated, indicating the need for replacement. Regular lubrication is also vital for roller chain maintenance. Ensure the chain is properly lubricated to minimize friction and wear. Consult the manufacturer's guidelines for the appropriate lubrication frequency and the type of lubricant to use. By following these maintenance practices and monitoring wear and tear, you can extend the life of your roller chain, reduce downtime, and maintain optimal performance in your applications.

Frequently Asked Questions

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Maintenance, Lubrication

Roller Chain Lubrication
Lubricating roller chain

Proper lubrication is crucial for the optimal performance and longevity of roller chains. Lubrication helps reduce friction, wear, and heat generation, ensuring smooth operation and preventing premature chain failure. When lubricating a roller chain, it's important to choose the right lubricant. Consult our manufacturer's guidelines or recommendations to determine the appropriate lubricant type and viscosity for your specific chain and application. Using the correct lubricant will help maximize the chain's efficiency and minimize wear.

To lubricate the roller chain, start by ensuring the chain is clean and free from debris. Remove any dirt, dust, or other contaminants that may have accumulated on the chain. This will help the lubricant penetrate the chain more effectively. Next, apply the lubricant evenly to the chain. It is recommended to use a lubricant applicator or a brush to ensure proper coverage. Pay attention to the inner plates, outer plates, rollers, and pins of the chain. Apply enough lubricant to create a thin film that coats the chain components. Avoid over-lubrication, as excess lubricant can attract more dirt and debris, leading to accelerated wear. Additionally, excess lubricant can create a messy working environment. Finally, after lubricating the chain, allow some time for the lubricant to penetrate and distribute evenly. This can be done by running the chain for a few minutes under light load conditions. This helps ensure that the lubricant reaches all the critical areas of the chain, providing adequate protection. Regularly inspect the chain and monitor the lubrication condition. By following these lubrication practices, you can extend the life of your roller chain and maintain its smooth and reliable operation. Trust PEER Chain for high-quality roller chains and expert advice on lubrication techniques.

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Sprocket Wear

Sprocket Wear and Tear

Sprocket maintenance is crucial for the smooth and efficient operation of roller chains. Sprockets are the toothed wheels that engage with the rollers of the chain, transferring power and facilitating motion. To ensure their longevity and optimal performance, it's important to take care of them.

Roller chain sprocket maintenance

Regular inspection is the first step in sprocket maintenance. Check for any signs of wear, such as worn-out teeth, rough surfaces, or elongation of the tooth profile. If any of these signs are present, it's recommended to replace the sprocket to avoid potential chain slippage and premature chain failure. Proper lubrication is also essential for sprocket maintenance. Apply a suitable lubricant to the sprocket teeth to reduce friction and wear. This helps maintain smooth engagement with the roller chain and prolongs the life of both the sprocket and the chain. Be sure to follow our manufacturer's recommendations for lubrication frequency and the type of lubricant to use. In addition to regular inspection and lubrication, it's important to keep the sprockets clean and free from debris. Dirt and contaminants can cause premature wear and affect the performance of the roller chain. Regularly remove any accumulated dirt or debris from the sprocket teeth using a brush or compressed air.

By following these maintenance practices, including inspection, lubrication, and cleanliness, you can ensure the longevity and reliable performance of your sprockets. Trust PEER Chain for high-quality sprockets and expert advice on sprocket maintenance techniques.

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