Profile SPB - 16.3x13 MM

We offer a wide range of SPB V-belts from the ConCar brand in a standard profile of 16.3 × 13 mm. The SPB profile is a narrow V-belt that has been developed for efficient V-belt drives where high power transmission, stable operation and long service life are required. ConCar SPB V-belts are used in many types of machines and systems, including industrial machines, ventilation systems, pu , pumps, agricultural machines, woodworking machines and other mechanical installations where a strong and reliable transmission belt is needed.

SPB V-belts are a stronger alternative to the classic B-belt. An SPB V-belt is typically about 30% stronger than a regular B-belt, although in many cases they can run in the same pulley. This makes the SPB profile an obvious choice if you want to upgrade an existing belt drive without necessarily changing the pulley. Similarly, profiles such as B, BX, 5L and related AV and AVX profiles can often be used in the same type of pulley, when the profile, length and space requirements suit the machine.

SPB V-belts from ConCar are untiming and fabric-wrapped, unlike an XPB 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 SPB profile is often used when higher power transmission is desired than with the classic B-V-belts, but without having to go for a larger belt profile such as C or SPC. With dimensions of 16.3 × 13 mm, the SPB is a strong and efficient profile that is well suited to modern V-belt drives where high load capacity, good contact surface and stable operation are desired. The narrow profile makes the SPB belt suitable for many systems where space, operational reliability and efficient power transmission are important factors.

If the belt drive is particularly heavily loaded, SPB 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 SPB 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 SPB 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 B V-belts are typically specified in internal length (Li), while SPB V-belts are usually specified in effective length (Ld/Lw). 5L as well as AV and AVX profiles are, on the other hand, often specified in external length (La). Therefore, two belts that fit the same pulley can have different length designations, even though in practice they are close to each other in physical size.

If you are changing from a standard classic B V-belt to an SPB V-belt, you should therefore not only compare the number in the belt designation. A B-belt, an SPB-belt and a 5L-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 SPB 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 SPB profile make the belt suitable for many types of machines where reliable power transmission over a long period of time is needed.

If you are unsure which ConCar SPB 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 can also advise on alternative lengths and help you find a suitable replacement belt if the original belt is worn, discontinued or can no longer be read.