For example, let's say you have a sprocket with 20 teeth and the pitch of the chain is 0.5 inches. Using the formula above, we can calculate the pitch diameter as follows: Pitch Diameter = (20 / 0.5) x 25.4 Pitch Diameter = 508 mm. Therefore, the pitch diameter of this sprocket is 508 mm. The length L of a belt traversing three pulleys, as shown in the diagram below, and touching them on one side only, can be found by the following equation. Referring to the diagram, R 1, R 2, and R 3 are the radii of the three pulleys; C 12, C 13, and C 23 are the center distances; and α1, α2, and α3 are the angles, in radians, of the Most belt manufacturers will provide an online calculator for finding lengths of their belts, but the following formulas can be used to calculate belt length: If you need an exact measurement, you can use the following formula: where: C = Center to center distance between shafts; D 1 = Pitch diameter of larger pulley; D 2 = Pitch diameter of In essence, this number measures the diameter of the timing belt in each groove (i.e. the distance between the pitch and the timing belt pulley). As mentioned, the pitch of a belt is the distance between teeth. Pitch diameter can be found with a simple calculation: (pitch x number of teeth)/ Pi (3.14159). Outside Diameter (OD): outside diameter Timing Belt Clamp Plate - Overpressure Prevention, Fixed Hole Position. MISUMI. [New] The sizes for the belt nominal width 3" for H, 10 and 15 mm for S3M, 20 mm for S5M, 60 mm for S8M and 5 mm for T5 are added. [6/30/2023] Prevents excessive belt clamping by face-to-face contacting of the plates. Pitch Diameter: Coincides with the circle made by the reinforcing cord of the timing belt. Pulley Ratio: (Pulley 1 Pitch Diameter / Pulley 2 Pitch Diameter) OR (Pulley 1 RPM / Pulley 2 RPM) Center Distance: Distance between the center of rotation of Pulley 1 and Pulley 2. Belt Length: If you were to cut a belt and lay it flat, it would be this PAFiwD4.

timing belt calculation formula