Best Mechanical Roller Chain Sprockets of 2026

Brian Howie Avatar
Brian Howie
Last Updated: Jan 8, 2026

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Mechanical roller chain sprockets are an essential component in power transmission systems. These sprockets are designed to engage with a roller chain, allowing for efficient transfer of power between rotating shafts. They come in various sizes and configurations to accommodate different chain sizes and applications. Made from high-quality materials such as steel or cast iron, these sprockets are durable and built to withstand heavy loads and harsh operating conditions. With their precise tooth profiles and reliable performance, mechanical roller chain sprockets ensure smooth and reliable power transmission in a wide range of industries, including manufacturing, agriculture, and automotive.

At a Glance: Our Top Picks

uxcell 9 Tooth 1/4" Pitch Chain Sprocket Cover #TOP 1
uxcell 9 Tooth 1/4" Pitch Chain Sprocket
ftb score rating icon 9.8
AJANTA INDUSTRIAL 35BS14 35 Chain Sprocket Cover #TOP 2
AJANTA INDUSTRIAL 35BS14 35 Chain Sprocket
ftb score rating icon 9.7
Martin Roller Chain Sprocket, Series 25, Type B Hub Cover #TOP 3
Martin Roller Chain Sprocket, Series 25, Type B Hub
ftb score rating icon 9.5

Top 10 Mechanical Roller Chain Sprockets

#TOP 1

uxcell 9 Tooth 1/4" Pitch Chain Sprocket

a23070600ux0194
21mmx8mm
uxcell 9 Tooth 1/4" Pitch Chain Sprocket Cover
uxcell #25 Chain Roller Sprocket, 8mm Bore 1/4" Pitch 9 Tooth Single Strand Chain Sprocket, C45 Carbon Steel 25 Roller Chain Sprocket with Set Screws for ISO 04C Chain, 2Pcs

The uxcell Chain Sprocket is designed with 9 teeth and an 8mm bore, making it a perfect fit for ISO 04C chains. Its 1/4" pitch and precise dimensions ensure smooth and reliable chain engagement, which helps maintain consistent power transmission. The sprocket includes two set screws positioned at 90 degrees, allowing you to secure it firmly on a fixed shaft for stable operation. Made from durable C45 carbon steel with heat-treated teeth, this sprocket offers excellent wear resistance and long-lasting performance. Additionally, its black oxide coating protects against rust, keeping it functional in various machinery environments.

What We Like
Durable C45 carbon steel
Heat-treated wear-resistant teeth
Secure mounting with set screws
Rust-resistant black oxide coating
Precise 1/4" pitch design
#TOP 2

AJANTA INDUSTRIAL 35BS14 35 Chain Sprocket

35BS14HX7/8
7/8" Bore
AJANTA INDUSTRIAL 35BS14 35 Chain Sprocket Cover
AJANTA INDUSTRIAL 35BS14 Roller Chain Sprocket, Finished with Keyway, Type B Hub #35 Chain 7/8" bore Size 14-Teeth

The AJANTA 35BS14 Sprocket is designed with a durable black oxide finish that helps protect against rust and wear, making it a reliable choice for long-term use. Made from strong carbon steel, this sprocket offers excellent strength and durability for your mechanical needs. Its B-type finish bore design provides a secure fit, ensuring stable operation during use. With a 3/8-inch pitch, this sprocket is compatible with standard roller chains, offering smooth and efficient power transmission. If you need a dependable sprocket that balances strength and precision, the AJANTA 35BS14 Sprocket is a solid option for your equipment.

What We Like
Black oxide corrosion resistance
Durable carbon steel material
B-type finish bore fit
Standard 3/8” pitch compatibility
#TOP 3

Martin Roller Chain Sprocket, Series 25, Type B Hub

Martin
25B48
Martin Roller Chain Sprocket, Series 25, Type B Hub Cover
Martin Roller Chain Sprocket, Reboreable, Type B Hub, Single Strand, 25 Chain Size, 0.25" Pitch, 48 Teeth, 0.5" Bore Dia., 3.964" OD, 2" Hub Dia., 0.11" Width

The Martin Series 25 Sprocket is designed for use with 1/4" pitch series 25 chains, making it a reliable choice whether you need a driver or driven sprocket. Its Type B reboreable hub ensures a strong and secure fit on your shaft, giving you stability during operation. This sprocket fits shaft diameters from 1/4" to 1/2", so you can use it in a variety of setups without hassle. Plus, with options for different teeth counts, hub sizes, and bore sizes, you have the flexibility to match it perfectly to your application needs, making your work easier and more efficient.

What We Like
Compatible with series 25 chain
Secure Type B reboreable hub
Fits shafts 1/4" to 1/2"
Flexible teeth and bore sizes
#TOP 4

uxcell #25 Roller Chain Sprocket 25mm Bore

a25080100ux1994
uxcell #25 Roller Chain Sprocket 25mm Bore Cover
uxcell #25 Chain Roller Sprocket 25mm Bore 53.5mm OD, 25 Tooth C45 Carbon Steel ANSI #25 Roller Sprocket Round Hole with 8x3.3mm Keyway & Set Screws for ISO 04C Chain, Black

The uxcell Chain Sprocket is made from durable C45 carbon steel with a black oxide finish that helps resist rust, giving you a longer-lasting part. Its teeth are specially heat-treated for hardness and wear resistance, so it stays efficient over time. The sprocket securely locks the chain in place thanks to its strong tooth design, which prevents slipping during use. Installation is straightforward, as it mounts firmly on a fixed shaft with set screws that keep it stable. This ensures smooth power transmission and reliable performance in your machinery.

What We Like
Rust-resistant carbon steel
Heat-treated durable teeth
Secure chain locking
Easy, stable installation
#TOP 5

uxcell #50 Chain Roller Sprocket 7/8" Bore 9 Tooth

f24051600ux0025
black
uxcell #50 Chain Roller Sprocket 7/8" Bore 9 Tooth Cover
uxcell #50 Chain Roller Sprocket B Type, 7/8" Bore 9 Tooth Single Strand Chain Sprocket, Carbon Steel, Keyway with Set Screws

The uxcell Chain Sprocket comes with a 7/8-inch bore and 9 strong teeth, making it easy for you to mount securely on a fixed shaft using the included keyway and set screws. This design ensures the sprocket stays firmly in place during operation. Made from carbon steel with a heat-treated tooth section, it offers high durability and resistance to wear, so you get long-lasting use. Its black oxide finish helps prevent rust, keeping the sprocket reliable in different environments. Overall, this sprocket is a sturdy and convenient choice for your machinery needs.

What We Like
Durable carbon steel
Secure mounting with keyway
Wear-resistant teeth
Rust-resistant black oxide finish
#TOP 6

Jeremywell #35 Idler Sprocket

SP-35BB19-5/8
5/8" Bore 19 Tooth
Jeremywell #35 Idler Sprocket Cover
Jeremywell #35 Roller Chain Idler Sprocket 5/8" Bore 19 Tooth

The Jeremywell Idler Sprocket features a 3/8" pitch and 19 teeth, making it a reliable choice for your mechanical needs. With a 5/8" bore, it offers a snug fit for various applications, ensuring smooth operation. The outer diameter of 2.47" allows for effective performance, while the dual set screws provide added security during installation. Made from AISI 1045 medium carbon steel and finished with zinc plating, this sprocket is built to last, resisting wear and corrosion. You can trust this sprocket to enhance the efficiency of your roller chain system.

What We Like
Durable medium carbon steel
Zinc plated for corrosion resistance
Secure dual set screws
Compatible with various applications
#TOP 7

Martin Roller Chain Sprocket Series 60

Martin
60BS19 1
Martin Roller Chain Sprocket Series 60 Cover
Martin Roller Chain Sprocket, Bored-to-Size, Type B Hub, Single Strand, 60 Chain Size, 0.75" Pitch, 19 Teeth, 1" Bore Dia., 4.945" OD, 3.5" Hub Dia., 0.459" Width

The Martin Series 60 Sprocket is designed to work perfectly with series 60 chains, featuring a 3/4-inch pitch that suits both driver and driven sprocket needs. This means you can expect a precise fit for efficient power transmission. Its Type BS hub includes two setscrews and a keyway, ensuring a secure and stable attachment to your shaft, reducing the risk of slippage during operation. The sprocket accommodates shaft diameters ranging from 3/4 inch to 2-7/16 inches, providing flexibility for various setups. Plus, with different teeth counts, hub sizes, and bore options, you can easily find the right fit for your specific application.

What We Like
Compatible with series 60 chain
Secure Type BS hub design
Wide shaft diameter range
Multiple teeth and bore options
#TOP 8

uxcell 23 Tooth Roller Sprocket B Type #25 Chain

a21121100ux0374
17mm
uxcell 23 Tooth Roller Sprocket B Type #25 Chain Cover
uxcell 23 Tooth Roller Sprocket B Type, #25 Chain, Single Strand 1/4" Pitch, 17mm Bore Black Oxide C45 Carbon Steel, Keyway with Set Screws for ISO 04C

The uxcell Roller Sprocket comes with one sprocket and two set screws, making installation straightforward and secure. Its keyway design, combined with set screws positioned at 90 degrees, ensures the sprocket stays firmly fixed on the shaft, giving you reliable performance. Made from durable C45 carbon steel, the teeth undergo high-temperature quenching for extra hardness and wear resistance, so you can count on it to last. The black oxide coating protects against rust, helping the sprocket maintain its quality over time. This sprocket is perfect for machinery like milling or drilling machines, providing smooth and dependable chain transmission.

What We Like
Secure keyway with set screws
Durable C45 carbon steel
High hardness and wear resistance
Rust-resistant black oxide coating
#TOP 9

Saelno 40B12-3/4 Roller Chain Sprocket

40B12-3/4
black
Saelno 40B12-3/4 Roller Chain Sprocket Cover
Saelno #40 Roller Chain Sprocket Type B 3/4 inch Bore 12 Tooth, Hardened Antirust 1045 Steel Drive Sprockets 40B12-3/4

The Saelno 40B12 Sprocket is designed with a 3/4 inch bore and 12 teeth, making it compatible with #40 chains and providing a precise fit for your machinery. Made from durable ANSI 1045 carbon steel, its teeth undergo high-frequency quenching to harden them, ensuring long-lasting wear resistance. The sprocket's blackened surface offers excellent protection against rust and corrosion, helping it withstand harsh conditions. Installation is straightforward with two setscrews and a keyway, allowing you to easily set it up and maintain smooth, reliable operation in your equipment.

What We Like
Durable 1045 carbon steel
Hardened teeth for wear resistance
Rust and corrosion resistant
Easy installation and maintenance
#TOP 10

uxcell #35 Chain Idler Sprocket 17T 12mm Bore

a23062900ux0145
56mmx12mm
uxcell #35 Chain Idler Sprocket 17T 12mm Bore Cover
uxcell #35 Chain Idler Sprocket, 12mm Bore 3/8" Pitch 17 Tooth Sprocket Tensioner, C45 Carbon Steel 35 Roller Chain Sprocket with Bearing for ISO 06C Chain, 2Pcs

The uxcell Idler Sprocket features 17 teeth and a 12mm bore, making it a perfect fit for your roller chain needs. Its 3/8-inch pitch and precise dimensions ensure smooth engagement with your chain, helping maintain proper tension and reliable operation. Made from durable C45 carbon steel with a heat-treated tooth surface, this sprocket offers excellent wear resistance and long-lasting performance. The sealed bearing allows the sprocket to rotate freely on a fixed shaft, reducing friction and making maintenance easier for you. This combination of quality materials and design ensures you get a dependable part that supports efficient machinery operation.

What We Like
Durable C45 carbon steel
Sealed bearing for smooth rotation
Precise 17-tooth design
Heat-treated wear-resistant teeth
Buying Guide Image

Frequently Asked Questions (FAQs)

1. How do you identify a roller chain sprocket?

To identify a roller chain sprocket, look for the part number which typically starts with the chain pitch, followed by the hub style or code, and the number of teeth the sprocket has. If the sprocket is multi-strand, there may be a letter prefix in the part number.

2. What are the four types of sprockets?

There are four types of sprockets: Type A, which is a plate with no added thickness or hubs; Type B, which has a hub on one side; Type C, which has hubs of equal thickness on both sides of the plate; and Type D (also known as Type C offset), which also has two hubs.

3. What is the difference between 40 and 41 roller chain?

The difference between 40 and 41 roller chain lies in the roller width and diameter, plate height and thickness, overall width, and tensile strength. These differences affect the compatibility and performance of the roller chain.

4. What is a Type D sprocket?

A Type D sprocket is a sprocket that uses a Type A sprocket mounted on a solid or split hub. It is split and bolted to the hub for easy removal, allowing for convenient changing of the speed ratio without removing bearings and other equipment.

5. Is 40 or 41 chain stronger?

The #40 chain is stronger compared to the #41 chain. The #40 chain has more room between the side plates, making it suitable for thicker sprockets. On the other hand, the #41 chain is similar in appearance to the #420 chain but has a shorter standing height.

6. Is a bigger sprocket faster or slower?

A bigger rear sprocket or a smaller front sprocket will result in a higher final drive ratio and better acceleration, sacrificing top speed. Conversely, a smaller rear sprocket or a bigger front sprocket will lead to slower initial acceleration but a higher top speed.

Editor's Notes

During our mechanical roller chain sprocket research, we found 24 mechanical roller chain sprocket products and shortlisted 10 quality products. We collected and analyzed 5,563 customer reviews through our big data system to write the mechanical roller chain sprockets list. We found that most customers choose mechanical roller chain sprockets with an average price of $18.31.

The mechanical roller chain sprockets are available for purchase. We have researched hundreds of brands and picked the top brands of mechanical roller chain sprockets, including uxcell, AJANTA INDUSTRIAL, Martin, Jeremywell, Saelno. The seller of top 1 product has received honest feedback from 6,105 consumers with an average rating of 4.8.

Written by
Brian Howie Avatar

Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.