Comet Kevlar Drive Belt - 7/8in. Top Width - 37 3/4in. Belt Outside Circumference

The drive belt is marked with the specifications "40-105". When used with a 7 1/2-inch diameter, 40D driven pulley, the center distance is 10 1/8 inches. When used with an 8 1/2-inch diameter, 44D driven pulley, the center distance is 9 3/16 inches. The outside circumference of the drive belt measures 37 3/4 inches.

The drive belt is a critical component that transmits power from the motor or engine to the driven machinery. The numerical markings on the belt, "40-105", provide important information about the belt's size and intended use. The first number, 40, indicates the belt's pitch, which is the distance between the belt's teeth or ribs. The second number, 105, represents the belt's length in inches.

The center distance, which is the measurement between the centers of the driving and driven pulleys, is an important factor in selecting the appropriate drive belt. When the drive belt is used with a 7 1/2-inch diameter, 40D driven pulley, the center distance should be 10 1/8 inches. This ensures proper alignment and tension of the belt, which is crucial for efficient power transmission and prolonged belt life.

Similarly, when the drive belt is used with an 8 1/2-inch diameter, 44D driven pulley, the center distance should be 9 3/16 inches. The difference in center distance between the two configurations is due to the varying pulley diameters and the corresponding changes in the belt's wrap angle around the pulleys.

The outside circumference of the drive belt, which measures 37 3/4 inches, is another critical specification. This measurement determines the overall length of the belt and ensures that it can be properly installed around the driving and driven pulleys. Accurate measurement of the outside circumference is essential when replacing or selecting a new drive belt to ensure a proper fit and optimal performance.

In summary, the drive belt specifications provide important information for selecting the correct replacement belt and ensuring proper installation and operation. The marked belt size, center distance requirements, and outside circumference measurements must be carefully considered to ensure the drive system functions efficiently and reliably.

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