Profile SPA - AV 13 - 12.7x10 MM

We offer a wide range of SPA V-belts from the ConCar brand in standard profile SPA / AV 13 with dimensions 12.7 × 10 mm. The SPA profile is a narrow V-belt that has been developed for efficient V-belt drives where stable operation, high power transmission and long service life are required. ConCar SPA V-belts are used in many types of machines and systems, including industrial machines, ventilation systems, compressors, pu , agricultural machines, woodworking machines and other mechanical installations where a reliable transmission belt is needed.

SPA V-belts are a stronger alternative to the classic A-belt. An SPA V-belt is typically approx. 30% stronger than a regular A-belt, although in many cases they can run in the same pulley. This makes the SPA profile an obvious choice if you want to upgrade an existing belt drive without necessarily changing the pulley. Similarly, profiles such as AV 13, AVX 13 and 4L V-belts can often be used in the same type of pulley, when the profile, length and space requirements suit the machine.

SPA V-belts from ConCar are untiming and fabric-wrapped, unlike an XPA V-belt, which is usually timing on the inside. The wrapped construction gives the belt a durable textile surface around the rubber, which protects the belt and ensures uniform contact with the pulley's V-grooves. The belt itself is made of neoprene rubber with polyester reinforcement, which helps the belt maintain its length during operation and provides a robust solution for common and demanding V-belt pulls.

The power is transferred through the friction between the belt flanks and the V-groove of the pulley. This means that the belt must lie correctly in the pulley so that the side contact is uniform. When installed correctly, the belt must not bottom out in the pulley, as the power should not be transferred via the bottom of the belt, but via the sides. If the belt lies too deep, too high or runs crookedly in the groove, this can cause increased heat, noise, slippage or unnecessary wear on both the belt and pulleys.

The SPA profile is often used when higher power transmission is desired than with the classic A-V belts, but without having to go for a larger belt profile. With the dimensions 12.7 × 10 mm, the SPA / AV 13 is a compact and efficient profile that is well suited to modern V-belt drives, where a strong belt with a good contact surface and stable operation is desired. The narrower narrow V-belt profile makes the SPA belt suitable for many systems where space, operational reliability and efficient power transmission are important factors.

If the belt drive is particularly heavily loaded, SPA V-belts can also be purchased as a reinforced version with up to 50% higher strength. This can be an advantage on machines with high loads, many starts/stops, strong accelerations or operation where a regular standard belt wears out faster than desired. A reinforced SPA V-belt can therefore be a good choice if you want a longer service life or greater safety in the belt drive.

When choosing a new ConCar SPA V-belt, it is important to check both the profile and the length. Here, it is important to pay special attention to the fact that different V-belt profiles are often specified in different length measurements. Classic A V-belts are typically specified in internal length (Li), while SPA V-belts are usually specified in effective length (Ld/Lw). 4L, AV 13 and AVX 13 V-belts, on the other hand, are often specified in external length (La). Therefore, two belts that fit the same pulley can have different length designations, even though they are close to each other in physical size in practice.

If you are changing from a standard classic A V-belt to an SPA V-belt, you should therefore not only compare the number in the belt designation. An A-belt, a SPA-belt and an AV 13-belt can be measured in different ways, and it can lead to incorrect choices if you only compare the length directly. Always compare the existing belt's marking with the stated measurements for Li, Ld/Lw and La, or contact us if you are in doubt about which length corresponds to the old belt.

ConCar SPA V-belts are a good choice for those who want an affordable, strong and reliable V-belt for regular or more heavily loaded belt drives. The fabric-wrapped surface, polyester reinforcement and stable SPA profile make the belt suitable for many types of machines where reliable power transmission is needed over a long period of time.

If you are unsure which ConCar SPA V-belt is right for your machine, we are happy to help. Send us a picture of the existing belt, the belt marking or information about the machine and we will find the correct replacement. We also advise on alternative lengths and help find a suitable replacement belt if the original belt is worn, discontinued or can no longer be read.