Power Transmission

The section “C” V-belts — with designations ranging from C100 to C300 — are classic power transmission belts with a V profile used to transfer power in mechanical and industrial applications. The “C” section indicates a trapezoidal profile with a top width of approximately 22 mm and a height of approximately 14 mm (standard C‑section), compliant with international standards for V‑belts, for reliable transmission between compatible pulleys. The C100…C300 variants refer to increasing pitch lengths, identified by standard codes (linked to the length in inches converted into millimetres).

The section “C” V-belts — in sizes from C43 to C99 — are standard “V” profile mechanical power transmission belts, designed to transfer power between grooved pulleys in various types of industrial machinery and mechanical applications. The “C” section indicates a trapezoidal profile with standard dimensions of approximately 22 mm top width and 14 mm height according to technical standards for V‑belts. These belts in the C43…C99 range cover a series of increasing pitch lengths, expressed in international standard numbers and useful for easily identifying the correct size.

The section “D” V-belts — in sizes from D110 to D285 — are classic “V” profile power transmission belts, designed to transfer power between shafts by means of grooved pulleys. The “D” section identifies a wide-band profile, with a standard top width of approximately 36.5 mm and a height of approximately 21.8 mm according to international standards, ideal for transmissions with heavier loads than sections A, B or C. The D110…D285 variants cover different belt pitch lengths to suit mechanical applications of different configurations.

The SIT section “SPA” V-belt is an industrial V-belt designed to provide greater reliability, stability and service life than traditional section A belts, while maintaining a similar top width. It is used in mechanical applications where consistent performance and greater durability over time are required.

The section “SPB” V-belt is an industrial V-belt belonging to the SIT SP range, designed for medium-to-high power transmission applications. Compared with traditional section B belts, the SPB offers greater stability, higher efficiency and longer service life, thanks to an optimised profile and construction.

The section “SPZ” V-belt is an industrial V-belt belonging to the SIT SP series, designed for light and medium-light power transmissions. Compared with traditional section Z belts, the SPZ guarantees greater operating stability, better efficiency and longer service life, thanks to a more advanced construction.

The section “Z” V-belt is a trapezoidal profile power transmission belt used in light mechanical and industrial applications. Section Z identifies a compact belt, suitable for small-diameter pulleys and for systems where reduced size and good transmission efficiency are required. Various pitch lengths (lengths) are available to suit a wide range of applications.

The 3V section V-belt is a high-performance drive belt, designed to transmit power in industrial machinery and vehicles. Thanks to its trapezoidal profile, it offers high load capacity and optimum grip, ensuring efficient and long-lasting transmission.

The 5V section V-belt is a high-performance drive belt, designed to transmit high power in industrial machinery and mechanical plants. Thanks to its wider trapezoidal profile, it offers greater load capacity and superior grip, ensuring efficient and long-lasting transmission.

The section A V-belt — with sizes ranging from A100 to A196 — is a drive belt with a standard V section designed for mechanical and industrial applications. The designation “A” indicates the belt profile according to international standards (top width of approximately 13 mm and height of approximately 8 mm) and the variants A100…A196 refer to the different pitch lengths expressed in millimetres. These belts are suitable for transmitting power between shafts by means of pulleys with a compatible profile, ensuring reliability and durability.