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Synchronous & Timing Belts

Synchronous and timing belts are components in various mechanical and automobile machinery. They primarily synchronize or time the movements of the machine's features, using teeth that fit into a matching toothed pulley, ensuring a positive grip that prevents slipping. Unlike flat belts or v-belts, which rely solely on friction, the timing feature of synchronous belts makes them exceptionally efficient for high-torque applications.

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Application Specific Timing Belts

Application Specific Timing Belts

Specifically designed and tailored to meet the requirements of a particular application or industry, ensuring optimal performance and reliability in specific environments or operating conditions.

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Dual Timing Belts

Dual Timing Belts

Synchronous belt system that consists of two parallel belts running side by side on separate pulleys, offering synchronized power transmission and increased load-carrying capacity compared to a single belt setup.

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Round Tooth Timing Belts

Round Tooth Timing Belts

Reliable power transmission and accurate synchronization in various applications, featuring a round tooth profile for smooth engagement and reduced noise.

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Enhanced Torque Round Tooth Timing Belts

Enhanced Torque Round Tooth Timing Belts

Specialized belts designed for high torque applications, featuring modified tooth profiles, reinforced construction, and coatings for improved power transfer.

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Square Tooth Timing Belts

Square Tooth Timing Belts

Square-shaped teeth that engage with corresponding grooves on pulleys or sprockets. The square tooth profile provides a larger contact area, resulting in improved power transmission.

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About Synchronous & Timing Belts

Synchronous and timing belts—also known as toothed, cog, or timing belts—function on the principle of positive engagement between the belt teeth and the sprocket grooves. Unlike traditional belts, they don't rely on friction to transfer power. Instead, the precise meshing of belt teeth with pulley grooves ensures a firm grip, allowing the synchronous belts to maintain a consistent speed and timing without slipping. This mechanism enables the direct transfer of motion and power, ensuring accuracy and efficiency in applications such as car engines, industrial machinery, and various home appliances.


Round-tooth and square-tooth timing belts, while similar in their fundamental function, exhibit critical differences in their design and application. As the name suggests, round-tooth timing belts have rounded teeth that seamlessly engage the pulley grooves, reducing noise and vibration. They offer efficient power transmission in high-speed applications. Conversely, square-tooth timing belts have a more robust, square-shaped profile. This design promotes grip and alignment, making them ideal for heavy-duty applications requiring high torque transmission. Additionally, square-tooth belts have fewer tooth jumps due to their larger contact surface.


Dual timing belts have a dual arrangement that works well in high-performance engines requiring precise timing. These belts provide superior grip and synchronization, simultaneously managing two separate timing sequences. The fundamental advantage of dual timing belts is that they offer enhanced power transmission capabilities, improved accuracy due to synchronized rotation, and increased belt lifespan due to balanced load distribution. As such, they are often used in applications demanding exceptional power and precision.


Application-specific timing belts are specialized belts for specific applications or machinery. These belts, which come in various sizes, materials, and tooth profiles, are engineered for optimal performance in designated settings. Industries such as automotive, textile, printing, food processing, and many others utilize these belts to ensure precise, synchronized movement of critical components in their machinery. Customizing these belts helps maximize efficiency and longevity while minimizing maintenance and downtime.


You can trust MRO Supply for your synchronous and timing belt needs. Since selecting the correct timing belt results in optimum performance, efficiency, and life span, MRO’s expertise and guidance in selecting the right belt can help you save money and increase productivity. Remember that every belt we sell is from a reputable manufacturer that meets your requirements.

Synchronous & Timing Belts BLOGS

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Browning Synchronous Belt Drive Timing Pulley (HPT Sprocket B648M20SDS)

Browning Synchronous Belt Drive Timing Pulley (HPT Sprocket B648M20SDS)

A synchronous belt drive transmits torque through the positive engagement of belt teeth (as opposed to... READ MORE

Let's Talk about Synchronous Belts: Five Things You Probably Did Not Know

Let's Talk about Synchronous Belts: Five Things You Probably Did Not Know

How well do you know synchronous belts? This post is a closer look at synchronous belts to help you... READ MORE

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