ANSI No	#40	LENGTH	100 ft
PITCH	0.5 in (12.7 mm)	ROLLER DIAMETER (D1 MAX)	0.313 in (7.95 mm)
WIDTH BETWEEN PLATES (B1 MIN)	0.310 in (7.85 mm)	PIN DIAMETER (D2 MAX)	0.156 in (3.96 mm)
PIN LENGTH (L MAX)	0.654 in (16.60 mm)	PIN LENGTH (LC MAX)	0.701 in (17.80 mm)
INNER PLATE DEPTH (H2 MAX)	0.472 in (12.0 mm)	PLATE THICKNESS (T MAX)	0.059 in (1.50 mm)
ULTIMATE TENSILE STRENGTH (QMIN)	14.10 kN / 3,205 lb	WEIGHT	0.417 lb/ft (0.62 kg/m)

#40 Chain: strength and Accuracy for Power Transmission

The 40 Chain is one of the most widely used models for power transmission in machinery and equipment. Classified as ANSI #40, it follows an international standard that ensures compatibility, strength, and consistent performance in industrial, agricultural, and automotive applications.

In addition, this roller chain offers an excellent balance of durability and cost, making it a reliable choice for keeping operations running smoothly. With the 40 Roller Chain, you can expect precision in performance and the strength required to handle diverse working conditions.

What Is the #40 Roller Chain?

The #40 Roller Chain is a roller chain standardized under the ANSI #40 classification, which sets specific dimensions to ensure interchangeability and reliable performance. This standard defines details such as pitch, roller diameter, inner plate width, and minimum tensile strength.

In practice, the 40 chain works as a mechanical power transmission link. It connects sprockets, allowing motion to be transferred with stability and precision between different machine components. For this reason, it is widely used in industries that demand consistent and efficient operation.

Unlike other chain types, the roller chain features cylindrical rollers that reduce friction when engaging with sprocket teeth. This design increases efficiency, minimizes wear, and extends operating life even under demanding working conditions.

What Is the #40 Chain Used For?

The #40 Chain is a versatile component designed for reliable and steady power transmission. Its compliance with the ANSI #40 standard ensures compatibility and efficiency across different machinery types.

Widely used in industrial equipment, where consistent motion is essential to keep production lines operating at full capacity.
Common in agricultural machinery, including tractors and harvesters that demand continuous strength in challenging environments.
Applied in the automotive and mechanical maintenance sector, ensuring durability in systems that rely on high mechanical resistance.

In every application, the 40 Chain delivers performance based on dependability and long service life. This combination makes it a trusted choice for industries that require both strength and operational efficiency.

Benefits of the #40 Roller Chain

The #40 Roller Chain delivers a set of features that make it essential across multiple industries. Its main advantage lies in its high tensile strength, ensuring consistent performance even in demanding applications. This provides greater operational safety and minimizes the need for frequent replacements.

Another strong point is its versatility. The chain can be used in a wide range of industries, from automotive to agriculture, while maintaining reliability. This flexibility helps standardize components and simplifies maintenance management.

In addition, the 40 chain is known for its easy maintenance. Its robust design allows for straightforward lubrication and quick inspections, reducing downtime and keeping equipment productive for longer periods.

Technical Specifications of the #40 Chain

The #40 Chain complies with the ANSI #40 standard, ensuring uniformity and reliability in every application. Its dimensions are designed to provide a precise fit and continuous performance in power transmission systems.

The pitch measures 0.5 inch (12.7 mm), while the roller diameter is 0.313 inch (7.95 mm). The inner plate width is 0.310 inch (7.85 mm), and the maximum plate thickness is 0.059 inch (1.50 mm). These measurements guarantee strength and operational stability.

In terms of resistance, the chain delivers a minimum tensile strength of 14.10 kN (3,205 lb) and an average tensile strength of 17.5 kN, making it capable of handling heavy loads without compromising durability. The weight is about 0.417 lb per foot (0.62 kg/m), providing a balance between robustness and efficiency.

These specifications confirm that the 40 Roller Chain is a dependable choice for demanding industrial environments, combining standardization and high performance in one product.

How to Choose the Right #40 Chain?

Choosing the right #40 Chain is essential to guarantee both performance and safety in a wide range of applications. The selection process requires attention to specific technical factors that directly impact durability and efficiency.

Define the correct chain length to match the distance between equipment shafts and avoid slack or excessive tension.
Select the proper pitch according to the ANSI #40 standard to ensure a precise fit with sprocket teeth.
Evaluate the tensile strength required to handle heavy loads and minimize the risk of premature failures.

By considering these factors, companies can select the most suitable #40 Roller Chain for their operations. This careful choice not only enhances equipment reliability but also prepares the ground for smoother maintenance practices and better long-term performance.

Tips for Using and Maintaining the #40 Chain

To get the best performance out of the #40 Chain, proper use and maintenance practices are essential. The first step is regular lubrication. Applying the right oil reduces friction between components, extends service life, and improves system efficiency.

Another key factor is correct chain tension adjustment. A chain that is too loose can slip off the sprocket, while one that is too tight accelerates wear. The goal is to maintain balance, ensuring flexibility without compromising safety.

It is also important to practice preventive replacement. Routine inspections help identify early signs of wear, such as elongation or deformation, avoiding unexpected failures during operation.

By following these tips, the 40 roller chain remains reliable and continues to deliver top performance across different working environments.

PGN’s 4#0 Roller Chain Product Line

PGN Bearings offers a complete line of #40 Roller Chain, designed to meet a wide range of performance and application needs. Each product is manufactured with high-quality materials to ensure strength, precision, and long-lasting durability in demanding environments.

#40 Roller Chain x 100 feet – Free Connecting Link

This model includes 100 feet of ANSI #40 chain and comes with a free connecting link for easy installation. It features a 0.5” (12.7 mm) pitch, a 0.313” (7.95 mm) roller diameter, and a minimum tensile strength of 14.10 kN (3,205 lb). It is ideal for continuous industrial applications where durability and reliability are essential.

Other Variations in Stock

In addition to the 100-foot option, PGN also provides several 40 chain variations in different lengths and configurations. All models follow ANSI standards and deliver high performance in power transmission. These options are recommended for both maintenance tasks and large-scale industrial projects.

With this variety, it becomes easier to choose the right 40 roller chain for every application, always backed by PGN Bearings quality.

Why Choose PGN Bearings for #40 Roller Chains?

PGN Bearings stands out as a trusted provider of #40 Roller Chains, combining certified quality, a wide range of options, and expert support. Based in Miami, FL, the company has been delivering industrial solutions since 2018, always focusing on reliability and efficiency.

One of its main strengths is being ANSI compliant, which ensures consistent performance across all chains. This guarantees compatibility with different applications and reduces the risk of failure during operation.

PGN also offers a broad selection of sizes and lengths, making it easy for every customer to find the exact chain needed. This flexibility supports both small maintenance tasks and large-scale industrial projects.

Another advantage is fast delivery and expert technical support, which help businesses minimize downtime. By combining cost-effectiveness with excellence, PGN Bearings becomes the ideal choice for those looking for dependable 40 roller chains.

FAQ – Frequently Asked Questions about the 40 Roller Chain

1. What does ANSI #40 mean?

The ANSI #40 designation means the chain follows the standards set by the American National Standards Institute. This ensures standardized dimensions, sprocket compatibility, and consistent performance across applications.

2. What is the tensile strength of a #40 chain?

The 40 Roller Chain has a minimum tensile strength of about 14.10 kN (3,205 lb) and an average tensile strength of 17.5 kN, making it highly durable even in demanding applications.

3. Can I use a 40 roller chain outdoors?

Yes. The chain can be used outdoors as long as it receives proper lubrication and maintenance to protect against corrosion and premature wear.

4. How can I extend the lifespan of a #40 chain?

The best way is to maintain proper lubrication, adjust chain tension correctly, and perform regular inspections. Preventive replacement also helps avoid unexpected failures.

5. What’s the difference between a #40 and a #50 roller chain?

The #50 chain is larger and stronger, designed for heavier loads. The #40 chain is lighter and more cost-effective, making it ideal for industrial, agricultural, and automotive uses where extremely high tensile strength is not required.

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