V-belts are essential components in many power transmission systems. The nomenclature of V-belts may seem complex at first, but it is actually very structured. Each belt is designated by a series of letters and numbers that provide key information about its dimensions and characteristics. For example, a belt designated “b92” indicates a section width of 17 mm (for the letter B) and a pitch length of 2413 mm. Nevertheless, it is possible to identify the belt by consulting the reference number often visible on the back of the belt. This reference includes the belt type (Z, A, B and C) - these letters define the belt width.
The different sections of V-belts
V-belts are classified into several categories depending on the width of their section. The most common sections include:
- Section A : 13 mm width
- Section B : 17 mm width
- Section C: 22 mm width
- Section D: 32 mm width
Each section is adapted to specific uses, depending on the needs in terms of power and mechanical constraints.
How to Identify a V-Belt ?
You can directly evaluate your belt to establish its dimensions. To do this, equip yourself with a tape measure and a caliper. Using the caliper, measure the width and height of the belt in order to define its profile. Next, use your tape measure to measure either the inside length or the outside length.
It is important to note that to obtain the original length of the belt, a few millimeters must be subtracted from the external length or added to the internal length, depending on the profile of the belt.
How do you know which size V-belt to choose ?
How to determine the appropriate size of a V-belt? To make a proper replacement, it is essential to measure the top width, height and outer circumference of the used belt. For example, a type 3L-400C belt has a width of 9.5 mm, a height of 5.6 mm and an outer circumference of 40 inches (or 1016 mm).
The different categories of V-belts
There are a variety of sizes, the most common of which include standard (Z, A, B, C, D, E), narrow (3V, 5V, 8V), wedge (SPZ, SPA, SPB, SPC), hexagonal (AA, BB, CC) and split power (2L, 3L, 4L, 5L).
Narrow belts
- The SPZ belt : Width of 10mm and height of 8mm
- The SPA belt : Width of 13mm and height of 11mm
- The SPB belt : Width of 16mm and height of 14mm
- The SPC belt : Width of 22mm and height of 18mm
Classic belts
- The Z belt : Width of 10mm and height of 6mm
- The A belt : Width of 13mm and height of 8mm
- The B belt : Width of 17mm and height of 11mm
- The C belt : Width of 22mm and height of 14mm
- The D belt : Width of 32mm and height of 19mm
Toothed belts
- The XPZ belt : Width of 10mm and height of 8mm
- The XPA belt : Width of 13mm and height of 11mm
- The XPB belt : Width of 16mm and height of 14mm
- The XPC belt : Width of 22mm and height of 18mm
Why choose our V-belts ?
Our V-belts are designed to deliver superior performance and exceptional durability. Whether you need a belt for a heavy industrial application or for lighter equipment, our wide range of products will meet all your specific needs.
Don't leave your machines to chance! Discover our selection now and find the ideal V-belt to optimize your transmission systems.
