How to Identify a V-Belt

A V-belt is a specialized wedge-shaped belt, made from a durable rubber compound and reinforced with a high-strength tensile cord engineered to efficiently transmit power and facilitate mechanical motion. V-belts play an important role in various driving mechanisms, powering engines in air compressors, fans, and pumps, among other applications. V-belts are available in a diverse range of sizes and materials for different power transmission needs.

V-Belt Types

At MDS of Michigan, we offer an array of V-belt types, each designed to excel in distinct applications:

• Light Duty: Ideal for light-duty applications typically involving fractional horsepower motors.
• Classical Heavy-Duty: Available in a wide range of sizes to suit various needs.
• Molded Cogged: Equipped with cogs to accommodate smaller diameter pulleys and provide effective heat dissipation. Raw Edge Sidewalls prevent slippage.
• Wedge: Characterized by a narrower, deeper profile with a higher power capacity compared to classical V-belts. This design allows for more compact drives.
• Wedge Cogged: Possesses the same properties as the Wedge V-belt but is cogged for enhanced flexibility and heat dissipation.
• Banded / Ribbed: Two or more V-belts are joined to form a single belt, enabling them to function as one unit with equal load distribution and wear.

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How to Identify V-Belts with Branding:

The simplest way to identify a V-belt is by reading the part number from the branding on the belt. However, this may become illegible over time due to wear.

How to Identify V-Belts without Branding

Find the measurements for your V-belt using the following steps:

Step 1: Determine Belt Cross Section

V-belt cross sections are categorized based on top width and depth measurements, each denoted by a letter of the alphabet. For instance, a V-belt with 21/32 in. width and 7/16 in. depth is labeled as a “B” belt. The cogged and standard v-belts have the same width and depth. For example, a “BX” belt and a “B” belt both have a 21/32 in. width and 7/16 in. depth.

Step 2: Identify Belt Construction

V-belts are available in wrapped or raw edge styles, with differences in their construction. This is essential to note, as it affects the belt’s performance.

Step 3: Measure V-Belt Length

Measuring the length of a V-belt can be challenging due to various industry terms for length. While using tapes can provide an approximate measurement, it may not be the optimal length for the application. Precise measurements are often best obtained using specialized tools or software.

Step 4: Label the Drive

To simplify future identification, consider labeling the drive with the correct belt part number, ensuring easy access to replacements. This practice enhances maintenance and uptime.